Graffiti ‘artists’ tend to use fast-drying, high-pigment aerosol spray paints, permanent markers and bitumen-based paints. All of these are hard to remove from porous surfaces because they penetrate deeply into the material’s pores and form strong, durable chemical bonds with the substrate, acting like a stain rather than a surface coating.

Common urban surfaces, like stone walls, brickwork and concrete, are all porous so they readily absorb graffiti. They’re often sensitive, so strong solvents, alkali or acid cleaning solutions can erode the surface and should be avoided. Other removal methods, like sandblasting or high pressure steam cleaning are abrasive and can cause additional damage to the underlying surface.

In order to safely remove graffiti from these surfaces, you need to use a non-caustic solution, like LTP Solvex. The treatment is applied with a paint brush or by dapping with a cloth, in manageable areas of no more than five square metres. It’s important not to brush it out; keep the application generous. The solution should then be left to dwell on the surface for the specified time – generally up to 30 minutes. If the surface starts to dry within this timeframe, apply more treatment. Then, use a stiff brush or an abrasive nylon pad to remove the softened paint and repeat the process if any unwanted material remains. After treatment, wash down the surface with a suitable intensive cleaner – like LTP Grimex – and rinse with plenty of water, then leave to dry.

After cleaning stone to remove graffiti, we’d normally advise the application of a suitable impregnating sealer that does not alter the natural appearance of the surface that’s being protected. This also helps to make any future clean-up much easier by reducing the risk of absorption.

For more advice and demos, browse LTP TV on YouTube or contact the LTP team direct on tel. 01823 666213 or email info@ltp-online.co.uk

Just like a limestone or sandstone tile, porcelain pavers can become dirty due to environmental elements, muddy boots, animal excretions, fallen leaves, algae and everything else that they come into contact with.  They are really stain resistant but they’re not self-cleaning.  Just like a porcelain tile installed indoors, pavers will need to be cleaned to maintain that just-installed look.  But, being a textured surface, it can sometimes be quite difficult to release residue that’s become trapped within the high-low surfaces – and that’s where barrier and enhancing treatments can make a big difference.

The benefits of applying a barrier treatment

Textured matt porcelain pavers don’t need to be sealed but applying a barrier treatment before grouting can offer multiple benefits.  For example, our own water-based LTP Porcelain Tile Protector is designed to protect the surface of the tile from cement and resin staining during installation. 

The barrier within our Porcelain Tile Protector is mildly acidic, so it’s able to penetrate deeply into the textured porcelain’s fissures.  Once dry, the treatment leaves invisible active ingredients behind and they cross link within the low points of the glaze. This provides the protection and makes the removal of any residues much easier. It also helps to improve and increase the working time of grouts and jointing compounds.  Once residues have been removed and the surface is dry, a further coat makes ongoing cleaning and aftercare easier.

Porcelain enhancers – the challenges and the benefits

Whilst textured, natural-effect tiles are popular, many consumers wanted to switch-up the matt look to something glossy.  This created the development of various film-forming sealers but, unfortunately, they didn’t tend to wear well and, when they did de-bond, they were difficult to remove. 

We embraced this challenge head-on five years’ ago, when we started to research our own LTP Porcelain Tile Enhancer.  Two years down the line, we had developed a water-based solution which we applied to an external test area where delivery drivers stopped to unload goods. We monitored the area every month and later that year, the ‘wet-look’ finish was as good as new.  The new treatment, which was launched in early February last year, provides lots of benefits in addition to enhancement; resistance to foot traffic, general wear and stains, UV resistance and it also makes maintenance easier.  And, as well as being water-based, it’s also PFAS-free, so it’s safe and environmentally-friendly.

Recommendations for ongoing maintenance

Just like indoors, outdoor tiles will benefit from a periodic clean.  Keeping the surface relatively clean will prevent a build-up of dirt in the textured surface.  This, in turn, will make ongoing cleaning easier and will maintain the tile’s slip resistance.  As a general rule of thumb, it’s worth cleaning porcelain paving every couple of months or so – ideally, three times during late spring/summer and twice during the winter.  Surfaces that are regularly cleaned will be far easier to keep clean.  Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, will also help maintain a seamless aesthetic.  

Jet washing may seem like the best method for a fast clean but it will only wash dirt off the surface of the slabs. High pressure water will also damage grout joints. A specialist treatment, like our LTP Grimex intensive cleaner, will react with the dirt and grime, whilst our LTP Black Spot and Algae Remover will tackle organic matter and help prevent regrowth.

To find out more about protection and maintenance, please visit https://www.ltp-online.co.uk or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

We’re a bit of an expert!

In response to its growing popularity, we’re getting lots of enquiries from installers and home-owners who may not have worked or lived with terracotta before and, as ‘a bit of an expert’, we’re more than happy to help!

Our own history dates back to the creation of Wellington Tile; a company founded in 1981 to import terracotta from Portugal. Recognising the need for an ageing liquid to give terracotta an antique finish, a secret brew was mixed up and branded as LTP Oldtone Oil.  The terracotta was sold as Lionheart Terracotta, so the sealer – and subsequent treatments – became known as Lionheart Terracotta Products, or LTP for short.   

Today, LTP Oldtone Oil is not part of our core range and is specifically manufactured for use on man-made cement-based flagstones to give them an antiqued appearance. The aged appearance for hand-made terracotta is a popular choice, but instead of using LTP Oldtone Oil we use LTP Boiled Linseed Oil and LTP Antique or Clear Wax to finish. This centuries old method of protecting terracotta is very traditional.  A completely different, lighter finish can be achieved via the synthetic treatment route.  Both use different LTP products and methods of application.

Terracotta should aways be sealed and protected before and after grouting! When sealing after grouting, always wait until the grout has firmed off and remove any residues before applying more sealer or wax.

Traditional treatment

An aged, antique appearance is created by using natural oils and waxes.  We recommend application of LTP Boiled Linseed Oil – a traditional pre-polish sealer – which seals the tile and enhances durability. The oil fills the pores of the terracotta and, once cured, this offers mechanical strength making the tile harder and easier to wax.  

LTP Boiled Linseed Oil is applied to clean tiles with a brush until the terracotta is saturated. You should allow at least 12 hours between each coat to ensure that the oil thoroughly cures. Most terracotta will take 1-2 coats to reach saturation but some tiles, especially low fired handmade terracotta, may take more coats. The tiles should then be left to dry for at least 24 hours before finishing the surface.

Once the tiles have been oiled, wax is applied; one coat before grouting and one after, making sure to cover the joints as well. For this we recommend either LTP Antique Wax, which has a medium brown tone for a vintage look or LTP Clear Wax if you want to retain the terracotta’s natural appearance.  The wax provides a resilient protective layer against water, dust and dirt, as well as a soft sheen.  Both treatments have a soft paste consistency and they’re applied with a cloth.  After 15 minutes, tiles are buffed with a scrubbing brush or a mechanical buffing machine with brush attachment.  

Applying a wax protection to reduce maintenance

To preserve an antique look, you can apply a finishing coat of wax protector, LTP Ironwax Gloss as a final treatment stage.   A surface sealer, Iron Wax Gloss contains a hardwearing metallised acrylic wax that will make surfaces easier to clean, maintain the waxed aesthetic and eliminate the need for any further wax application, for years.  Tiles should then be maintained with LTP Floorshine.  If Ironwax Gloss isn’t applied, we recommend maintenance with LTP Waxwash which contains a trace of linseed oil to top up the protection.

Synthetic treatment

A synthetic finish is achieved with a spirit-based or water-based impregnater, followed by an acrylic wax. It’s the easier option in terms of application because the treatments are generally faster to apply, quick-drying and they create a surface seal with a degree of sheen, so no
buffing is required. However, the finish is a lighter, more contemporary one and it doesn’t create an aged aesthetic. From the LTP range, we recommend LTP Mattstone or Mattstone H20 to seal the terracotta before grouting and then after grouting, finishing with an easy to apply hard
wearing acrylic self-shine wax, LTP Ironwax Satin or LTP Ironwax Gloss.

The impregnating sealer is applied using a paint brush. The first coat is normally left longer to cure (sometimes over-night) as this provides a base layer within the terracotta to apply further coats of protection at two-hourly intervals until the tile is fully saturated. After grouting and after the joint has dried and firmed off, LTP Ironwax Satin or Gloss is applied using a paint brush. Three coats are generally sufficient – with an hour between each application – but a higher sheen can be created with additional coats, up to a maximum of six.

All tiles, whether treated with Ironwax Gloss or just Ironwax Satin, should then be maintained with LTP Floorshine.

To find out more about protection and maintenance, please visit https://www.ltp-online.co.uk or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

What is mildew?

Mildew is a type of microscopic fungus that spreads through the air as tiny spores.  Once these spores drop in moist or humid areas, they begin to colonise and multiply.  Unlike mould, mildew doesn’t penetrate but tends to gather on flat surfaces like grout lines.  When it first develops, it’s white or grey and overtime it becomes darker, causing tell-tale black marks. Mildew isn’t a risk to health but it does look unsightly. It’s most commonly found in bathrooms and kitchens.

What causes orange stains in humid areas?

Orange stains or slime, often found in grout joints and silicone seals, are caused by ‘pink mould’ which is actually an airborne bacteria.  Like mildew, the bacterium thrives in damp and moist areas and feeds on mineral and fatty deposits in soap and shampoo residue.

How to remove these stains

To remove staining from existing grout lines, we recommend LTP Mouldex.  Designed to tackle orange and black staining caused by poor ventilation and ineffective cleaning, Mouldex is a trigger spray treatment that has a bleaching action which cleans grout and silicone seals and helps prevent future staining. 

Organic dirt and slippery algae

A build-up of organic material and algae are two of the common causes of slippery tiles.  Organic contaminants include food, drinks, cosmetics and sun cream.  There’s also environmental contamination from bird droppings, rain water and dirt, as well as from grass, leaves and petals blown onto surfaces.  Microscopic algae will also flourish in damp areas; it comes in many guises and creates a slippery residue that can create a hazard underfoot.  During maintenance, it’s also not uncommon for surfaces to be washed with a detergent and rinsed with pool water, which re-contaminates the surface, compounding the problem.

A blast with a jet wash may seem like a quick and easy way to clean pavers but it will only wash dirt off the surface. Use of excessive amounts of water can also exacerbate staining and slip issues and jet washing can loosen grout, erode a stone surface and damage any protective sealant applied. To remove organic-residue, you’ll need to use an alkaline-based cleaner, like LTP Grimex.  This will break down the residue without damaging the surface.

Always follow the application instructions carefully; solutions like LTP Grimex need to be left on the tile surface for sufficient contact time until the dirt releases.  The surface should then be thoroughly rinsed with clean water.  Scrubber machines can also be used, where suitable.

To remove slippery algae, we recommend LTP Black Spot & Algae Remover.  Like Grimex, it’s also an alkaline-based cleaner formulated to remove mould, black spot, lichen, fungus and algae.  It breaks down ‘tendrils’ below the surface, as well as preventing regrowth. The treatment is applied directly to the tile surface, left to act and should then be thoroughly rinsed.

Limescale deposits

Limescale can quickly build up in wet environments, especially in hard-water areas, and, like organic residue, it’s a magnet for dirt.  Here, we recommend treatment with LTP Cement, Grout & Salt Residue Remover.  Unlike acid-based solutions, this remover can safely be used on stone and porcelain. It doesn’t tarnish or affect chrome or stainless steel either, which makes it ideal for use around pool steps and in shower areas.  

Rising salts on pool surround

Treatment will also remove any grout residue and application is very easy; you dilute the Remover according to build-up, apply it with a cloth or sponge, scrub tiles with a white emulsifying pad and then thoroughly rinse surfaces with clean water. 

Two types of rust

Rust staining is also another common problem.  It’s generally caused by metal objects, like rusting BBQs, metal umbrella stands, sun loungers, pots and garden tools.  Tiny deposits of iron wash off the surface of the objects when they come into contact with moisture and these deposits then leave a rust stain. Some weed killers and lawn fertilisers can create rust stains as they contain ferric sulphate iron particles; these stains appear as little spots of rust.  We refer to these issues as ‘surface rust stains’.

Rust or orange-coloured discolouration can also appear naturally within hard ferrous-type stone and it’s particularly common in sandstone. These stones naturally contain iron which can oxidise or rust when it comes into contact with rain. Stains often appear after laying and are easy to identify because the appearance is normally a gradual phasing in which results in a bloom of orange colour across the surface of the stone. We refer to these as ‘naturally occurring rust stains’.

Each type of stain needs to be removed with a different type of solution.  For surface rust stains, we recommend LTP Rust Stain Remover.  Safe to use on all types of tile and stone, the Remover is applied neat and left to act for 15 minutes, where it will change to deep purple as it reacts with the rust.  Tiles should then be rinsed with clean water.

Rust stains around a pool

Naturally-occurring rust stains need to be removed with a specialised acid-based cleaner formulated for hard ferrous stone, like LTP Ferrex iron stain remover.  This treatment is left to act over a longer period of time before rinsing and isn’t suitable for acid-sensitive stone. Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside. 

Adopting a good maintenance regime

If you’re planning a new installation, or have just renovated an existing tiled area, it’s worth protecting the surface from stains going forward. We recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and also the spread of algae, mould and black spot.  

Going forward, tiled areas will benefit from a thorough clean every couple of months or so – ideally, three times during late spring/summer and twice during the winter.  Residue acts as a key to dirt and surfaces that are regularly cleaned will be far easier to keep clean and safe.

To watch demos for all of the products listed, please visit LTP TV on YouTube at https://www.youtube.com/@LTPTV

For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

ends  –

For media information and photography, please contact Angela Fitzhugh PR Ltd at angie@afpr.co.uk

A good way to test if a stone floor needs to be resealed is to carry out a Water Drop Test:

Clean the tile to remove dust and dirt, then drop a bead of water onto the surface. If it sits in place, the stone is well sealed. If the water quickly soaks into the tile or makes the surface look darker it needs resealing.

Cleaning and Sealing 

Before applying a sealer, floor tiles should be given a deep clean.  Most cleaners, like LTP Grimex can be used at different dilutions, depending on dirt build-up.  If tiles are particularly dirty, they may need to be agitated with a scrubbing brush before the cleaner is left to react – with additional solution applied to keep the tiles wet – and then agitated again before mopping up the solution with clean water.  

Once tiles are dry, the sealer can be applied, generally with a foam roller or paint brush for rough-cut, tumbled, textured or riven surfaces or a sealant applicator, lint-free cloth, lamb’s wool applicator or sponge for honed, smooth and polished stone.  Application should be generous and even.  On more absorbent surfaces, additional coats can be applied at hourly intervals until the surface is fully saturated.  Saturation occurs when an even layer is still visible on the surface after 30 minutes.  Any excess can then be removed – after one hour – with an absorbent towel, microfibre cloth or large buffing machine.  For indoor floor tiles, we recommend either LTP Mattstone H2O for a completely natural finish or LTP Colour Intensifier & Stoneblock H2O which increases natural colour vibrancy.  

Extending protection lifespan with a topical sealer

To cut down on maintenance, a topical wax sealer like LTP Ironwax Satin or LTP Ironwax Gloss can be applied after the impregnator.  This will create a satin or gloss finish which will greatly extend the lifespan of the protection.  If the stone is then maintained with a product like LTP Floorshine, which tops up the protection, renovation may not be necessary for up to 10+ years. Otherwise, floors should be cleaned with a pH-neutral cleaner which will protect the stone and the sealer.  

For more advice, please visit https://www.ltp-online.co.uk, call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

Porcelain pavers

Porcelain tiles are renowned for their robustness and although they are largely stain-resistant, they are still slightly porous.  Their textured, anti-slip glaze has micro-fissures in the surface that can hold onto stains and whilst tiles can be scrubbed – and most cleaning solutions are tolerated – traces of residue will still remain.  Viscous solutions, like washing up liquid, will often leave a residue behind when surfaces have dried, which becomes slippery when made wet again.  Mix this with rain water and air-borne pollution and a fine layer of grime can form, creating a key for dirt. Harsh cleaning solutions will also compound problems by damaging any protective barrier applied and the tile and the grout joint.

Stain on porcelain after cleaning with unsuitable detergent and jet washing

Stone pavers

The same issues are relevant for stone, except that it’s porous and often acid-sensitive.  As a result, stains will penetrate more deeply.  Acidic liquids – like basic patio cleaners and vinegar – and alkali solutions – like baking soda and bleach – will also create more damage, remove any applied protective sealer and erode the stone underneath it.  

Stain on stone after cleaning with unsuitable detergent and jet washing

How to effectively remove bird poo 

To remove all traces of bird poo – and other similar excretions – we recommend LTP Grimex intensive cleaner.  Grimex is stronger, so that it works more deeply, breaking down traces of residue in micro fissures and pores.  It also kills germs. 

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

Jet washing isn’t recommended.  At a lower pressure it will only wash dirt off the surface of the pavers and, at a high-pressure, it has the potential to damage the surface of the paver and remove grout from the joints. A specialist treatment, like LTP Grimex intensive cleaner, will react with the dirt and grime, giving a really deep clean without damaging pavers. 

Although LTP Grimex is a very safe solution, it’s always best to keep pets and children away from areas until pavers are rinsed and dry.  If the solution comes into contact with grass and plants, just wash off with water.

For more information, contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

As a general rule of thumb, only polished porcelain tiles need to be sealed, and these aren’t recommended for outdoor installation as they don’t provide sufficient grip underfoot. In contrast, porcelain pavers generally have a matt finish with a textured surface, so they’re a safe and practical option.

However, whilst matt porcelain tiles don’t need to be sealed, there are lots of benefits to be gained from the application of our pre-grout ‘barrier’ treatment, LTP Porcelain Tile Protector, and LTP Porcelain Tile Enhancer

THE BENEFITS OF A BARRIER TREATMENT AND ENHANCER

Tiles that have a textured surface can easily become stained by grout and installation residues, which become trapped in the tile’s high and low surface points. This is particularly common in external applications, where brush-in jointing compounds are frequently used.  Once these residues build up, the texture of the tile can become congested, and the tile’s slip resistance may be reduced. Ongoing cleaning and maintenance can also become more difficult.  LTP Porcelain Tile Protector will help prevent these issues.  

A water-based treatment that’s applied before grouting, LTP Porcelain Tile Protector creates a barrier that protects tiles from staining and makes the removal of residues easier.  It also makes installation easier, as it extends grout working times by preventing rapid moisture absorption and keeping the grout fluid for longer.  A final coat after installation also makes ongoing maintenance easier.

After installation, additional protection can then be added with the application of LTP Porcelain Tile Enhancer.  A water-based, PFAS-free solution, LTP Porcelain Tile Enhancer creates a ‘just washed look’ without compromising slip-resistance.  As well as enhancing appearance, the finish also provides further resistance to foot traffic, wear and stains.

How to apply LTP Porcelain Tile Protector:

Before application, ensure that the surface to be treated is completely clean, dry and free from dirt, grime, cement and grout. If necessary, clean the tiles with a dilute solution of LTP Grimex Intensive Cleaner (1:5), using a white pad. Rinse well to remove residues and let the tiles dry.

Shake the bottle before use. Before grouting, apply evenly to the tile surface using a broad paint brush, foam roller or light pressure sprayer. Allow to dry for 30 minutes. 

Apply a second coat. Leave to cure for a minimum of one hour before grouting or pointing.

Once grout or pointing is dry, and all residues have been removed, a further coat of protector can be applied to cover both the tile surface and joints.

How to apply LTP Porcelain Tile Enhancer:

Before application, ensure that the surface to be treated is completely clean, dry and free from dirt, grime, cement and grout.   If the tiles are newly laid, and were protected with LTP Porcelain Tile Protector, ensure all installation residues have been removed and the surface is completely dry before application.  If tiles weren’t protected, or have been laid for some time, deep clean with LTP Grimex Intensive Cleaner.  Any existing fixing residues should be removed with LTP Cement, Grout & Salt Remover. 

Apply LTP Porcelain Tile Enhancer onto clean, dry tiles with a foam roller, sealant applicator pad or paint brush.  Apply without rubbing until an evenly thin layer is created.

Allow to dry for one hour.  For a more enhanced appearance, further coats can be applied, to a maximum of four; apply each coat at right angles to the previous coat.

The treatment will harden after approx. one hour but should be left for a further three days to achieve full hardness and become fully resistant.

For more advice on stone and tile protection and maintenance, contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit http://www.ltp-online.co.uk

In order to repair a scratched natural stone surface, you’ll need to gently etch the tile with a professional treatment, clean the surface to remove residue, and then apply new protection.  This three-stage procedure will also work for scuffs and scratches caused by dragging furniture or white goods across the surface.  

Three-step renovation

During Phase I, apply LTP Cement, Grout & Salt Residue Remover.  This treatment features an acid-replacement solution, so it removes residue and mildly etches the stone, without causing damage. Dilute the solution 1:1 with cool water and carefully apply it to each tile, without overlapping from one tile to another. Then, agitate the tiles immediately using a black emulsifying pad.  Care should be taken not to step on floor tiles during this phase.  Tiles should then be rinsed immediately with cold water and a sponge, twice, using clean water each time.  The surface should then be left to dry.

For Phase 2, we recommend LTP Grimex Intensive Cleaner, which is diluted 1:3 with cool water, applied across the surface and left to act for 15 minutes.  This neutralises the surface.  After applying, scrub the tiles and grout joint using a white emulsifying pad and then extract residues with a sponge or floor cleaner.  Then, rinse the surface with clean water a second time, remove any remaining residue and leave the tiles to dry.

During Phase 3, a colour enhancing sealer is applied to restore the natural colour depth of the tiles.  We recommend LTP Colour Intensifier & Stainblock. Apply it evenly with an applicator and allow the surface to dry naturally.  After 45 minutes, buff the tiles with a microfibre cloth.  The surface should then be left to dry for a minimum of 12 hours before being walked on and should not come into contact with water for a further three days.  Underfloor heating should not be switched on throughout this process.

Ongoing maintenance

Going forward, stone tiles should always be cleaned with a gentle pH-neutral detergent.  We recommend our LTP Waxwash for floors and LTP Stonewash for wall tiles.  For porcelain tiles, we recommend LTP Porcelain Floor Tile Cleaner. Both will thoroughly clean while protecting the newly-applied sealer.  

A regular routine cleaning regime will make ongoing maintenance easier and will retain the tile’s aesthetic.  Most surfaces will benefit from a wet clean around once a week.

For more advice, please visit https://www.ltp-online.co.uk, call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

Surface rust stains

Most rust stains are caused by metal objects. Outdoors, common culprits include rusting BBQs, metal umbrella stands, pots and garden tools.  Tiny deposits of iron wash off the surface of the objects when they come into contact with moisture and these deposits then leave a rust stain. They’re generally easy to identify because the stain often mirrors the exact shape of the rusting metal object that was sitting on the surface.

In addition, some weed killers and lawn fertilisers can create rust stains, caused by ferric sulphate iron particles within them.  These stains appear as little spots of rust.

Naturally-occurring rust stains

Rust or orange-coloured discolouration can appear naturally within hard ferrous-type stone pavers; this is especially common in sandstone. These stones naturally contain iron which can oxidise or rust when it comes into contact with rain. Stains often appear after laying and are easy to identify because the appearance is normally a gradual phasing in that results in a bloom of orange colour across the surface of the stone.

The stain removal solutions

Jet washing, scrubbing with soapy water and treatment with harsh chemicals like brick acid won’t remove these stains – but the right chemical will.

Surface rust stains:

For these stains, we recommend LTP Rust Stain Remover– a non-caustic solution that’s safe to use on all types of polished and unpolished natural and artificial stone tiles, including marble, granite, travertine, split face stone cladding, sandstone, concrete, terracotta, ceramic and porcelain. 

How to apply LTP Rust Stain Remover:

1. Ensure that the surface to be treated is completely free from dust and dirt before application. If necessary, wash with LTP Grimex diluted 1:10 with water. 
2. SHAKE WELL BEFORE USE. Do not dilute. Completely cover the rust stain with the product. Leave to act for 15 minutes. The product colour will change to a deep purple as it reacts with the rust. Once the indicated time has elapsed, remove the residue and rinse the surface thoroughly with plenty of water and leave to dry. Repeat application until the stain is completely removed.

Naturally-occurring rust stains:

For these stains, we recommend LTP Ferrex – an acid-based cleaner but the right kind of acid for harder stones! Ferrex is designed for hard ferrous stones including sandstone, granite and slate. However, it isn’t suitable for use on acid sensitive surfaces, like limestone, marble or pavers with a highly polished finish. 

How to apply LTP Ferrex:

1. After testing on a small area, apply the solution to the surface and spread out evenly. For external applications, garden sprayers can be used.
2. For severe staining, surfaces should be agitated using a short haired scrubbing brush or black emulsifying pad. 
3. After 3 – 6 hours, rinse with plenty of clean water. If traces remain after a couple of days, repeat the process. 
4. After treatment, we recommend that the surface is protected from water with an impregnating sealer like LTP External Stone Sealer or LTP Mattstone H20.  This will greatly reduce the risk of rust discolouration returning. 

Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside. 

For more advice and demos, browse LTP TV on YouTube or contact the LTP team direct on tel. 01823 666213 or email info@ltp-online.co.uk

Algae stains on a porcelain paver

Cleaning porcelain pavers

As a general rule of thumb, it’s worth cleaning porcelain paving every couple of months over the spring/summer and twice during the autumn/winter.  Surfaces that are regularly cleaned will be far easier to keep clean.  Regular cleaning of inside-to-outside tiles, like those that run through bifold doors, will also help maintain a seamless aesthetic.  

Jet washing may seem like the best method for a fast clean but it will only wash dirt off the surface of the pavers. This will leave residue lodged in the tile’s textured surface which will, in turn, attract more dirt and residue.  The only way of reaching this is to use an alkaline-cleaner, like LTP Grimex and to allow sufficient contact time to break down the accumulated matter.  

If the build-up comprises slippery green slime and organic residue, LTP Black Spot & Algae Remover will provide the most thorough clean and will help prevent regrowth; the contact time for this type of treatment will generally be longer, in order to target the algae’s hyphae or filaments which will be anchored into place. Acidic solutions should, however, be avoided.  Whilst porcelain is acid-resistant, cementitious grout joints are not. Other stains, like cement, grout, efflorescence, wax, polymer, epoxy and rust are best tackled with a specialist LTP stain remover formulated to remove these residues. 

Recommendations for new installations

External porcelain pavers don’t need to be sealed but their textured finish can create a challenge during installation.  Grout and brush-in joining compounds tend to get stuck in the tile’s high/low surfaces, along with general dirt and residue. This creates a white film on the surface of the tile and this loss of texture can compromise slip resistance.  Applying LTP Porcelain Tile Protector before grouting will help protect the surface of the tile from cement and resin staining during installation. It will also help to improve and increase the working time of the grout or jointing compound, by preventing rapid moisture absorption and keeping it fluid for longer.  As an additional bonus, the treatment will leave invisible active ingredients behind which provide protection and make the removal of any residue much easier. Then, once residues have been removed and the surface is dry, a further coat across the face of the tile and the joint will make ongoing cleaning and aftercare easier too. 

Further resistance to foot traffic, wear and stains can also be added-in with the application of a LTP Porcelain Tile Enhancer  These generally create a sheen or ‘just washed look’ without compromising slip-resistance.  Look out for a breathable water-based treatment, to avoid moisture from becoming trapped under the finish, and for a PFAS-free solution to ensure a safe application.

For more advice, please call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

If, like us, you’ve seen lots of articles on deep cleaning, you may be tempted to try out some of the popular ‘cleaning hacks’.  Many people are recommending mixtures of vinegar, soda crystals, bicarbonate of soda, water and lemon to make disinfectants, all-purpose cleaners and limescale removers.  The problem is that lots of natural materials, like limestone and marble, are very sensitive to acid and alkaline.  Vinegar and lemon are both very acidic - and soda has high alkaline levels.  Both can erode or ‘eat away’ natural surfaces like stone floors, tiles, countertops and mosaics - and damage any protective sealer that’s been applied.  These surfaces should always be cleaned with a gentle pH-neutral product.

It’s useful to think about the pH scale before choosing – or making – a cleaning product. Running from 0-14, anything that scores a 7 is considered neutral and safe to use on all surfaces. Anything below a 7 is considered acidic and anything above a 7 is considered alkaline.  Acidic solutions are best at removing calcium, rust and other mineral ‘non-organic’ stains. Lemon and vinegar score around 3 on the pH-scale and toilet bowl cleaner is the most acidic, with a pH of 1-3. At the alkaline end of the scale, you’ll find bleach and many tile cleaners; they have a high pH value of 11-13 and are best at removing ‘organic’ dirt, grease and oil.  

Surprisingly, many ‘toxic-free’ products can also cause damage to natural surfaces. Look closely at the label on a leading anti-bacterial all-purpose cleaner and it states that it isn’t suitable for natural stone because it is acid-based.  It’s always worth reading the small print.  

Another common misconception is that an extra dose of the right product will do an even better job.  But this can actually create problems. Using a lower dilution may mean that a surface needs to be rinsed; if it isn’t, the residue may form a film on the surface, which could make future cleaning more difficult.  

LTP’s range includes lots of different products for tackling specific jobs – and removing stains – as well as pH-neutral cleaners that are safe and all purpose.  LTP Stonewash is a great all-rounder, if you’re looking for a combined bathroom and kitchen cleaner for all types of tile and stone.   The LTP website also includes various Video Aids and others resources to help you Identify your surface and calculate how much product you need.

To see the whole range, find our more and stock up with the right product, visit https://www.ltp-online.co.uk, or contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Things to avoid
Homemade cleaning solutions and steam cleaning are two cleaning methods to avoid. The most common homemade hacks – vinegar, lemon and baking soda – are all very acidic and will damage limestone. Bleach should also be avoided; whilst it is alkaline, rather than acidic, it is still too harsh for natural stone. Steam cleaning isn’t recommended either, as it can damage a stone sealer and compromise protection. Intense heat can also cause ‘spalling’ or flaking of the limestone.

What to use for routine and deep cleaning
A regular ‘routine’ clean will maintain a hygienic environment and a tile’s aesthetic. Once grease and dirt builds up on a surface, tiles will be more difficult to clean, and they may become slippery. A periodic deep clean in high traffic areas may also be necessary. Often, the same detergent can be used for routine and deep cleaning, with the dilution ratio and method adjusted in suit. This is the case with LTP Grimex – the detergent that we recommend for limestone floor tiles.

Methods for routine and deep cleaning
Routine cleaning with LTP Grimex: Sweep or vacuum the floor, to remove dust and loose dirt. Dilute one part LTP Grimex in 10 parts warm water. Apply with a cloth or mop. Wipe off thoroughly with a clean damp cloth.

Deep cleaning with LTP Grimex: Sweep or vacuum the floor to remove dust and loose dirt. Dilute one part LTP Grimex in 3 parts warm water. Apply liberally, spreading over the surface of the tiles. If necessary, agitate with a scrubbing brush. Leave to react for 5-10 minutes, keeping the surface wet with additional solution. Agitate surface again, mop up and rinse thoroughly with clean water.

How to maintain a seamless surface, from home to garden
If the same limestone tile is installed from inside to outside – for example, through bi-fold doors – it’s important to maintain both areas to avoid an unsightly contrast. Whilst LTP Grimex can be used on outdoor slabs, a specialist external treatment will help tackle issues specific to paths and patios, like black spot, lichen and moss which cause discoloration and create a slip hazard. We recommend LTP Blackspot & Algae Remover.

How to remove stubborn stains
If staining is still present on a floor that has been deep cleaned, we recommend use of a specialist treatment. Various solutions are available to safely remove common stains, like oil and grease, rust, wax, grout and salt residue. LTP’s full range of intensive cleaners, for all tile types, are shown here. Always check that the product is suitable for limestone. If the treatment is designed to strip the surface, you will need to re-apply a sealer to reinstate stain protection.

For more advice on the best maintenance regime for your limestone floor, please call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

End of winter clean

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.  A blast with a jet wash may seem like a quick and easy way to clean pavers but it will only wash dirt off the surface. Use of excessive amounts of water can exacerbate staining and slip issues and jet washing can also loosen grout, erode a stone surface and damage any protective sealant applied. A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity, and will also help to prevent regrowth of algae and other organic material.

Before cleaning, remove furniture, pots and other objects, and sweep the pavers to remove all leaves and residue.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your pavers are stained with slippery black spot, lichen, moss and algae, they will benefit from a targeted treatment with LTP Blackspot & Algae Remover.   Designed to break down microspores and black spot ‘hyphae’ before they colonise, LTP Blackspot & Algae Remover is acid-free, so it’s safe to use on acid-sensitive stone.  However, it does contain a bleaching action to remove stains, so test first on an inconspicuous area.  

How to apply LTP Blackspot & Algae Remover:

1. Remove furniture and other items from the area to be treated.
2. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
3. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
4. Hose off thoroughly with clean water.  

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during next winter's freeze and thaw cycle.

Added protection

If your pavers haven't been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush. It can be applied over residual moisture and will protect pavers from moisture, stains, weathering and efflorescence.  It’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more, please visit http://www.ltp-online.co.uk or visit LTP TV on YouTube to access our library of demo videos.

For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

As the evenings gradually grow lighter, it’s an ideal time to begin planning for spring cleaning. Larger tasks are often best addressed before the gardening season gets underway, and cleaning a fireplace hearth is one such job that can benefit from early attention.

There’s a wealth of information online, sharing tops tips on the best methods and solutions to use but, in the case of natural stone, this advice is often incorrect.  A quick search on ‘how to clean a stone hearth’ throws up lots of advice centred around using washing-up liquid for mild stains and a mix of baking soda and detergent for a deep clean. This isn’t, however, the best route to take.

Natural stone is primarily acid-sensitive but it can be sensitive to alkaline substances too.  Washing up liquid, despite being supposedly “kind to hands” isn’t mild in terms of natural surfaces.  It’s often mildly alkaline and will compromise any protection applied and will leave a residue.  Baking soda is also a weak alkaline compound; it can dull and discolour a stone surface and remove any applied protection, making the stone vulnerable to staining. 

Image kindly supplied by https://www.acquisitions.co.uk/

Specialist deep cleaners for stone, like LTP Grimex, are also alkaline but are fit for purpose and specially formulated to clean safely.  The formulation for Grimex was, infact, originally developed over 40 years ago and the solution used today is exactly the same.

How to deep clean with LTP Grimex

LTP Grimex intensive cleaner will safely and effectively remove most stains from a stone hearth, including organic residue, grease and black soot marks and it can be used at different dilutions, depending on the severity of the staining.

For mild stains, use a 1:5 dilution, apply the cleaner with a cloth or mop and then rinse with clean water.

For more severe staining, use a 1:3 dilution, agitate the solution with a scrubbing brush, leave for 5-10 minutes – keeping the stone wet with additional solution – and agitate again, before rinsing with clean water.  LTP Grimex can also be applied neat in severe cases. 

Removing other types of stains

Stubborn rust and wax residue is also a common issue.  Rust stains are often caused by tiny deposits of iron that come off fireplace tools, like pokers, and wax residue from candles.

To remove rust, we recommend LTP Rust Stain Remover – a non-caustic solution that’s safe to use on all surfaces.  First, wash the hearth with a 1:10 diluted solution of LTP Grimex.  Then, cover the stain with undiluted LTP Rust Stain Remover and leave it to act for 15 minutes.  The product colour will change to a deep purple as it reacts with the rust. Then, remove the residue and rinse with clean water. Repeat application until the stain is completely removed.

For stubborn candle wax residue, we recommend LTP Solvex – a non-caustic remover suitable for all surfaces.  Here, apply the solution neat and generously dab onto the stain with a cloth or brush.  Work the solution in manageable areas – as far as you can reach without treading into the cleaner.  Leave it to react for up to 30 minutes, applying more solution if it starts to dry out.  Using a coarse, stiff brush or an LTP Black Emulsifying Pad, lift the softened residue from the stone.  Repeat if any staining remains. Lastly, rinse with LTP Grimex, using a 1:3 dilution applied with a cloth, mop or brush, and then give the hearth a final rinse.

TOP TIP!  For particularly thick candle wax build up, cover the residue with blotting paper and then apply a warm iron to melt the wax.  This will take it away from the surface and eliminate the need for scrapping which could damage the stone. Once removed, apply LTP Solvex as directed above and clean the hearth with LTP Grimex.

Topping up protection & refreshing appearance

If the surface sealer on your hearth is worn or quite old, or a black stone surface has faded, it’s a good time to apply a new coat of sealer or restorer. This can be carried out once the surface is sufficiently dry; this may take a minimum of 24 hours.  

For natural stone, we recommend LTP Stone Oil, an oil-based impregnating sealer and, for black stone, LTP Blackstone Sealer & Restorer.  For ongoing maintenance, use a pH neutral cleaner like LTP Stonewash.

For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk. Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

In terms of solution application, the advantages of using the right tool are far reaching. You use less cleaner, sealer or protector to do the job and application is faster and easier, saving time and money. A well applied product will also perform better; in the case of a cleaner, this may reduce the frequency of cleaning required and prevent a build-up of residue which makes maintenance more difficult and can create a slip hazard. Similarly, a well applied sealer will create a clean, uniform seal over the tile surface, in corners and between tiles and fixtures, providing optimum protection. In turn, the need for costly surface renovation will be removed.

For more general cleaning – post installation or in refurbishments – a good professional tool beats a household cleaning tool time and time again. For example, a green scouring pad is too abrasive and can dull/etch a tile, along with any sealer applied, and potentially stain absorbent stone and cement-based grout. A professional non-scratch white emulsifying pad is recommended and will eliminate these issues; it should be used with a pad holder to ensure even pressure. Likewise, a professional claw brush beats a toothbrush every time; it’s stiffer, more durable and better at working into tight awkward spaces and corners.

Good tools are also more ergonomically suited to the job, reducing the risk of injury, sprains and pulled muscles. Tilers spend an incredible amount of time on their knees and, as a result, knee problems like bursitis and cartilage wear are very common. In terms of sealer application, this is especially prevalent amongst tilers that fix a lot of natural stone, where the sealing process can take several coats. Using a pad holder and sealant applicator on a 4-piece pole is not only better for your knees – allowing you to stand or kneel comfortably, rather than crawling – it’s also a more efficient and a quicker way of applying the protection. When used on honed and polished surfaces, it really helps to ensure even distribution and a streak-free finish, especially when applying a finishing coat of liquid wax.

Often, a combination of tools offers the best results. A sealer applicator is ideal for general floor application, but a hand-held emulsifying pad is best used close to skirting boards, to avoid knocking paintwork. A good tools range will provide all of these options, significantly increasing efficiency, improving job-site safety and guaranteeing a high-quality finish.

LTP’s range of tools and cleaning pads includes emulsifying and sealant pads and holders; course and smooth pads with handles; buffing cloths; grout, deck and claw brushes; universal 4-piece handles and cleaning and sealing kits. To find out more, please visit https://www.ltp-online.co.uk or contact the LTP Technical Team on 01823 666213 and email info@ltp-online.co.uk

Different types of algae

Often forming a dark green or black jelly-like film, slippery algae is generally caused by a cyanobacteria called Nostoc. Black spot – a dust-like lichen that originates from plants and trees – can also form a slippery residue; it takes about 2-3 years to become established, sending tendrils or ‘hyphae’ down into any cracks or porosity, searching for nutrients. Other forms of algae, like moss, liverwort and lichen tend not to be such a hazard, although widespread growth might not be welcome from an aesthetic point-of-view.

Removing slippery residue

LTP Black Spot & Algae Remover removes all types of algae, along with dirt and other residue. It is applied neat to swept pavers using a watering can or light pressure garden sprayer, and left to act for up to four hours. The formula breaks down residue and removes stains. Most stains are removed within hours of application.

Exposure to the air for four hours or longer ensures that the potency of the product has diminished before hosing surfaces down with clean water. This helps to ensure that the diluted wash-off is as harmless as possible to plants and lawns.

The remover can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.

A pressure washer shouldn’t be used to remove algae and residue, as excessive water will encourage further growth, damage pavers and any sealer applied and it will loosen grout. Water alone also won’t target hyphae or filaments anchored into place below the surface. Acidic solutions should also be avoided, as these will damage acid sensitive material and erode cementitious grout joints.

After treatment, newly cleaned surfaces can be protected with LTP External Stone Sealer, LTP Porcelain Tile Protector or LTP Porcelain Tile Enhancer. These treatments create a barrier that helps to prevent absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.

To find out more, please visit https://www.ltp-online.co.uk or contact the LTP Technical Team on 01823 666213 and email info@ltp-online.co.uk

It’s fairly easy to tell when intervention is required.  The terracotta may have lost its lustre or be more difficult to keep clean, due to a build-up of residue.  Tiles may become more easily stained, due to loss of protection, maintenance with unsuitable cleaning solutions or absence of a suitable sealer in the first place. Tiles may scratch more easily and, in the case of older tiles, moisture patches, powdery residue and ‘spalling’ or flaking of the surface might be apparent.   In each case, appearance can be easily restored, using the correct products and methods.

A deep clean

Before any protection is added back in, tiles should be swept and then deep cleaned to remove dirt residue, fixing residue (from the original installation or repairs), old wax and worn synthetic sealer. This should be carried out with a suitable alkali intensive cleaner, like LTP Grimex, which can be diluted to either deep clean or effectively strip the surface of the terracotta and remove residue trapped in the tile’s porosity.   

LTP Grimex should be applied to the tiles using an emulsifying pad and left to dwell on the surface for 10-15 minutes.  You’ll then need to work the solution into the tiles; a pad-on-a-pole will save your knees here!  Tiles should then be rinsed with clean water and a sponge, before applying a sealer.

NB. When cleaning, it’s worth using a hand-held emulsifying pad by the skirting boards, to avoid knocking and damaging the paint work, and then swapping for a pad-on-a-pole for the remainder of the tiled surface.  Also, mask any painted surfaces or bare wood to protect them. 

Repairs before sealing

Before tiles are resealed, any cracks should be repaired and missing grout replaced.  Salt pops and lime pops can also be removed at this stage:   

Salt pops are generally caused by efflorescence and the rising salts that leave white deposits on the tile surface. These can be treated with salt residue remover.  Make sure any treatment used is safe for application onto terracotta.  Some, like LTP Cement, Grout & Salt Residue Remover, will also remove any cement or grout residue left behind from the original installation or repairs before sealing.  The Remover is diluted with water 1:1, agitated with a nylon scrubber/scrubbing brush and left to react for 5-10 minutes. Additional solution may need to be applied during this time, so that the surface doesn’t dry out.  Any residue should then be removed and the surface rinsed with clean water.

Lime pops – an unusual but natural occurrence – are caused by lime deposits within the unrefined clay.  When the tiles are fired, the deposits shrink and leave a void within the structure of the tile.  This leaves a thin veneer over the lime pop and, if the veneer wears away, it can become visible.

Limes pops can be physically removed using an electric drill and masonry drill bit.  A hole should be drilled so that it’s slightly wider and deeper than the pop.  A paste made from a mixture of 20g of resin, 10g of hardener and 40g of ground terracotta should then be used to fill the hole and the edges feathered out with a small wooden spatula. The paste should be left overnight to dry before any sealer is applied.  You’ll find a video on our YouTube Channel that demonstrates this process.

Restoring a tile’s protection

Once the terracotta has been deep cleaned – and any repairs carried out and tiles cleaned – you can either use the traditional method to reseal tiles, or the synthetic method.

Traditional treatmentIf tiles have been stripped, we recommend a top up coat of LTP Boiled Linseed Oil to protect the terracotta and enhance durability.  Apply with a brush and check after 3-4 to see if the oil is fully absorbed, then wipe-up any excess.  Dispose of cloths carefully.  Tiles should then be left to dry for at least 24 hours before finishing the surface.

Once the tiles have been oiled, wax is applied.  If tiles haven’t been stripped and are relatively new, you can skip straight onto this stage.  Here, we recommend LTP Antique Wax or Clear Wax which will provide protection against water, dust and dirt, and create a soft sheen.  Wax is generally applied with a cloth and tiles are buffed with a scrubbing brush or a mechanical buffing machine with a brush attachment after about 15 minutes.  

To reinforce an antique look, and make ongoing maintenance easier, a finishing coat of wax protector like LTP Ironwax Gloss can also be applied as a final stage. 

Synthetic treatment

Protection can also be restored using a synthetic treatment, in the form of a spirit-based or water-based impregnator, followed by an acrylic wax.   This is generally faster to apply but the finish will be lighter and more contemporary.

Impregnating sealers are generally applied to stripped tiles using a paint brush; we recommend LTP Mattstone or Mattstone H20. The first coat is normally left longer to cure (sometimes over-night), as it provides a base layer within the terracotta to apply further coats of protection at two-hourly intervals until the tile is fully saturated.   LTP Ironwax Satin or Ironwax Gloss is then applied with a clean paintbrush; three coats are generally sufficient – with an hour between each application – but a higher sheen can be created with additional coats, up to a maximum of six.

Ongoing maintenance

Going forward, tiles should be maintained with a suitable pH-neutral cleaner, like LTP Floorshine.  If a finishing coat of wax protector hasn’t been applied, consider using a LTP Waxwash which contains a trace of linseed oil to top up the protection.

To find out more about protection and maintenance, please visit https://www.ltp-online.co.uk or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

Slate is very hardwearing and it’s generally far less porous than natural stone. It is, however, vulnerable to oil and grease, so benefits from periodic deep cleaning. It’s also important to protect tiles, as you would limestone.

On arrival, the Green Man team swept the stone to remove surface debris. They then used a weighted rotary machine which applies a mix of hot water and their recommended treatment – LTP Grimex intensive cleaner – to deep clean the tiles and grout.

LTP Grimex is a high-performance intensive cleaner that’s formulated to react with and remove oil, grease, wax and ingrained dirt. It can safely be used on all types of stone and tile at a variety of dilutions, according to residue build-up.

Brushes on the bottom of the weighted rotary machine gently breakdown the residue and the cleaning solution is then given time to dwell and to work on any stubborn soiling, to ensure optimal results are achieved.

The bottom of the rotary can be manually changed, so that the cleaning pads and brushes can be adjusted to differing levels of abrasion to suit the floor type, finish and condition. Although the machine cleans grout lines, it doesn’t always get into the grooves sufficiently, so these were tackled on hands-and-knees using a grout brush; this ensured a thorough clean and a uniform finish. A wet vac was then used to remove all of the remaining slurry and ‘air movers’ positioned to force-dry the floor ready for sealing. Water-based impregnating sealer – LTP Colour Intensifier & Stainblock H2O – was then applied to the clean, dry slate.

“Like Grimex, the LTP Sealer is our go-to product for sealing hard floors. It subtly enhances the natural floor tone, without changing the character, and it’s great for protecting against staining, as well as repelling water, oil and grease. The customer had previously expressed concern with some minor scratches on the slate and the sealer is also designed to fill in minor blemishes and diminish their visibility,” explained Green Man’s Linsey Morris.

For more information about the project and specification, please contact the LTP team on tel. 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk.  To find out more about the Green Man project, please visit https://greenmancleaning.co.uk

ends –

Most issues are the result of residue and this can be caused by a variety of things.  The most common is organic dirt, but there can also be residues of grout post installation, of rust, limescale or wax, or a film left by unsuitable cleaning products.  A build-up will, in turn, create a key onto which more residue will build up.  On a ceramic or porcelain tile, or a stone tile that’s been correctly sealed, this will affect surface appearance and a tile’s slip resistance properties; this is especially common in textured tiles where residue can accumulate in the tile’s high-low surfaces.   In some cases, a tile may look okay but the surface aesthetic may be ruined by a discoloured grout.  Whether across the face of the tile or within the grout joint, this residue will make tiles more difficult to clean, compounding the problem.  In the case of a natural stone tile that hasn’t been correctly sealed, staining can also occur.  

What not to do

It’s at this stage that things can often get worse.  There are many different ‘heavy duty’ products and tools on the market that are recommended for deep cleaning.  Many solutions contain harsh chemicals which can damage natural stone and erode a cementitious grout joint.  Home-made hacks, using baking soda and vinegar, can be equally damaging, as can using steam cleaners.  Specialist cleaners, on the other hand, are formulated to react with residue and enable safe removal.

As a rule of thumb, a specialist alkali cleaner should be used to remove organic dirt caused by food and drink, foot traffic, mould and mildew, soap scum, etc.

A specialist acid-based cleaner should be used to remove grout residues and limescale.  However, harsh acidic solutions should not be used, especially when cleaning natural stone. Specialist non-corrosive treatments that have an acid-replacement formulation, like LTP Cement Grout & Residue Remover, are safe to use on all types of unpolished natural stone.

How to safely renovate tiles

Removing organic residue:

Our specialist alkali-based cleaner, LTP Grimex, can be used for routine and deep cleaning of ceramic, porcelain and natural stone, with the dilution ratio and method adjusted to suit. Tiles should be wiped or swept/vacuumed before cleaning to remove loose dust and dirt.

To deep clean, dilute one part of LTP Grimex in 3 parts warm water. Apply liberally, spreading over the surface of the tiles. If necessary, agitate with a scrubbing brush. Leave to react for 5-10 minutes, keeping the surface wet with additional solution. Agitate the surface again, mop up and rinse thoroughly with clean water.

Removing grout residue and limescale:

As mentioned above, acid-replacement formulations, like LTP Cement, Grout & Salt Residue Remover, are safe to use on all types of ceramic, porcelain and unpolished natural stone.  

Apply LTP Cement, Grout & Salt Residue Remover undiluted and agitate immediately with an emulsifying pad. Rinse thoroughly with clean, fresh water then extract the released calcium deposits with a sponge.  Rinse with water and leave to dry.  Repeat the process until the lighter marks have been removed.

N.B. Shake the container well before use and wear gloves.  Always dilute by adding product to water, rather than water to product – and always rinse surfaces thoroughly with cool, clean water. When treating vertical surfaces, start at the top and work down.

Removing other types of stains from natural stone and porcelain

Whilst organic dirt and building matter are the most common causes of stubborn residue, stains can also be caused by other matter, including rust, rising salts, paint and wax.  The LTP range includes a variety of specialist treatments that will safely remove these stains, as shown here.

Renovating grout joints

To remove staining from grout lines, we recommend LTP Mouldex Grout Cleaner –  a trigger spray treatment that has a bleaching action which cleans grout and silicone seals and helps prevent future staining. LTP Mouldex can safely be used in all tile installations.

LTP Mouldex is sprayed onto stained areas 5-10 cm from the surface.  After around 45 minutes, a little water is applied and the surface is agitated with a stiff brush to release the dirt and grime; an old toothbrush is ideal for narrow joints and tight spaces. Tiles should then be rinsed, using a sponge and water.  

Top Tip! If staining is particularly severe, the treatment can be left overnight.  On walls, cling film can be applied over the treated area; this will help keep the solution in place and will prevent it from drying out.  

Once treated, grout lines can be protected from future staining with LTP Grout & Tile Protector.

Adding protection to tiles after a deep clean

Once heavily soiled tiles have been thoroughly cleaned, they will need to be protected against staining.  This will also make ongoing maintenance easier.  We recommend LTP Mattstone H2O or Mattstone for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  

Ongoing maintenance

Once the deep cleaning’s done, we recommend LTP Stonewash or LTP Multipurpose Cleaner for the daily cleaning of wall tiles.  Both are pH neutral rinse-free trigger spray cleaners, so safe to use on all surfaces.  For floors, we recommend LTP Waxwash; this cleaner contains a trace of linseed oil and can be used on the most delicate of surfaces, as well as ceramic and porcelain surfaces    Or, for engineered tiles specifically, LTP Porcelain Floor Cleaner.  High traffic areas will benefit from a mop/wet clean once a week, to keep on top of residue.

For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk. Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

Cleaning floors and tiled areas is one of the hardest jobs and many of us reach for a heavy-duty cleaner.   However, it rarely offers the best solution.  Most of these detergents – including many of the eco ranges - contain acid which will damage tiles, grout, chrome fittings and any protective sealer that’s been applied.  This is a particular issue for natural surfaces like stone and marble, which are acid sensitive.  To deep clean safely, we recommend LTP Grimex.  As the name suggests, it removes grime and stains, including oil, grease, ingrained dirt and wax.  It’s safe to use on natural stone, as well as porcelain and ceramics tiles, and can also be used to deep clean marble and granite worktops.

For grout and silicone that’s stained with mould spores, we recommend LTP Mouldex.   This treatment comes in a pump spray and it’s formulated to cling to surfaces, which targets the treatment and prevents run-off.   Mouldex has a bleaching action which helps restore colour and it’s antibacterial, so it helps prevent mould regrowth.  It can be used on natural as well as artificial stone – and on coloured grout – but it’s always best to test first, in an inconspicuous area.

How to use LTP Grimex

For areas that are slightly grubby – and for absorbent tiles – dilute one part of Grimex to ten parts of warm water.  Apply with a cloth or mop and rinse with clean water.  For dirtier surfaces, use a stronger 1-3 dilution and agitate the surface with a brush.  Let the solution act for 5-10 minutes, mopping with additional solution to keep the tiles wet, and agitate again before mopping up and rinsing thoroughly with clean water.

For built-up grime and stubborn stains, Grimex can be used neat and then thoroughly rinsed.

Sometimes, tiles that have been deep cleaned with a low dilution of intensive cleaner will need to be resealed.  The easiest way to see if a sealer is still performing is to carry out a water test:

1. Drop a bead of water onto the surface.

2. If it sits in place, it is well sealed. If the water quickly soaks into the tile or makes the surface look darker, then it needs resealing.

To top up protection, choose a suitable sealer from LTP’s range and carefully follow application directions.

How to use LTP Mouldex

Before applying the treatment, make sure that tiles are completely dry.  Spray Mouldex 5-10cm from the surface and leave it to act for 45 minutes.  Then, apply a little water and agitate with a stiff brush to help lift the grime and dirt. Finally, rinse the surface thoroughly with water and a clean sponge.  For silicone and elastic grouting, and for stubborn stains, the treatment can be left overnight.    NB.  Mouldex shouldn’t be used with acid-based residual grout removers or other acid- based cleaners.

Rinse-free routine cleaning

Once the deep cleaning’s done, LTP Stonewash is a great all-rounder.  A rinse-free pH natural spray cleaner, it can be used on all hard surfaces, from marble to polished porcelain. For walls and work tops, spray 20 cm from the surface and wipe over with a clean, damp cloth. For natural and artificial stone floors, we recommend LTP Waxwash; just dilute 2-3 capfuls (or 5 for dirtier surfaces) into a bucket of warm water, mop and allow to dry.  

For more advice, browse our Technical Blog or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk

Terracotta has proved itself to be a timeless tile.  Whilst it took a bit of a back-seat to bright limestones, marbles and wood-effects for a time, the enduring trend for natural, rustic materials has re-ignited its popularity.  Evolving in look, the latest designs include geometric patterns, motifs and elongated rectangles, in pale blush, peach and coral tones, through to ruddy brown.  But, traditional handmade terracotta tiles, both new and vintage, remain a firm favourite in all styles of property. 

The installation of new terracotta is generally fairly straight forward, provided that the subfloor is sound and that tiles are correctly protected using a traditional or synthetic system.  However, more challenging projects demand expertise, particularly installations within older properties constructed using traditional building methods. We were delighted to be involved in one such project within a rural cottage in the Chilterns, with Walter Croft from Victorian Tile Services.  Walter is a third-generation tiler with 30 years of experience restoring and installing original Victorian tiles and high-quality reproductions.

The Cottage

Dating back to the 1860’s, the cottage is a two-storey property constructed of brick and flint.  The family that owned the property are believed to have connections to Statesman and former Prime Minister, Benjamin Disraeli.

Walter Croft was contacted by the owner through a heritage magazine; he had previously approached various companies regarding damp proofing the floor and walls. Because the walls are largely constructed using flint, an effective damp proof course injection system wasn’t deemed effective or desirable, so the owner opted for a lime screeded floor, with a piped underfloor heating system (to comfortably heat the downstairs bathroom, hallway, utility, kitchen and lounge) and a 9-inch x 9-inch handmade terracotta tile throughout.

The tile installation spanned approx. 60m2.  Walter used Adhere Cal Lime adhesive and grout, comprising natural hydraulic lime (NHL), aggregates and additives.  A wide joint allowed the minimal amount of damp to breathe through the grout line and this solved the issue of not having a damp-proof membrane.

Before, during and after installation

Once the tiles were fixed, Walter applied two coats of LTP Boiled Linseed Oil to the surface of the terracotta, allowing 24-hours between coats. Once cured, two further coats of LTP spirit-based Mattstone were applied to the surface of the tile. Finally, a generous amount of LTP Clear Wax was applied with a soft cloth and, twenty minutes later, buffed with a machine, with corners buffed by hand.

“My client was really happy with the overall effect and didn’t expect such a dramatic enhancement once the beeswax was polished in.  It transformed from a matt brown to the appearance of a glossy conker, whilst retaining grip underfoot.  The LTP system was easy to apply and I’m delighted with the end result – and with the level of protection afforded in this very unique property,” Walter explained.

For more information, please contact LTP on tel. 01823 666213, email info@ltp-online.co.uk or visit  www.ltp-online.co.uk and Victorian Tiles Services at www.victoriantileservices.co.uk

Firework Night can cause a number of issues when it comes to surface staining.  There are the usual culprits, like food, drink, wax and grease, but there are others that can cause particular issues, especially on natural stone paving.

Black soot stains from gunpowder are a major bug-bear at this time of year, as are rust-type stains caused by iron filings used to create gold sparks. The residue from some fireworks also contains salt which create a powdery efflorescence.  And, there’s a whole spectrum of marks that can be caused by the mineral elements of the fireworks: Barium produces bright greens; strontium creates deep reds; copper produces blues; and sodium yields yellow. These elements can also be mixed to create bright orange, silver and purple.

What not to do

Unsurprisingly, most website searches throw up the usual advice to use bleach-based or acidic cleaner to tackle these stains and, as always, this is not recommended, especially on acid sensitive stone.  Natural materials like travertine and limestone are sensitive to strong acids and corrosive alkaline solutions like bleach.  Both can erode or ‘eat away’ the surface and damage any protective sealer that’s been applied. 

How to remove stains safely

When applying an LTP cleaner or stain removing solution always wear gloves and follow the instructions.  Children and animals should be kept away from the area during treatment and until pavers have dried.  Any run-off onto grass or plants can be diluted with water. 

Black soot & most coloured stains

LTP Grimex intensive cleaner will safely and effectively remove most stains from stone and porcelain, including organic residue, wax, grease, soot and marks left by minerals. 

For mild stains, use a 1:10 dilution, apply the cleaner with a cloth or mop and then rinse with clean water.

For more severe staining, use a 1:3 dilution, agitate the tiles with a scrubbing brush, leave the solution for 5-10 minutes – keeping tiles wet with additional solution – and agitate again, before rinsing with clean water.  LTP Grimex can also be applied neat in severe cases. 

Rust stains from iron fillings

For these stains, we recommend LTP Rust Stain Remover – a non-caustic solution that’s also safe to use on all surfaces.  

First, wash the area with a 1:10 diluted solution of LTP Grimex.  Then, cover the stain with undiluted LTP Rust Stain Remover and leave it to act for 15 minutes.  The product colour will change to a deep purple as it reacts with the rust. Then, remove the residue and rinse with clean water. Repeat application until the stain is completely removed.

Salt marks and efflorescence

To safely remove white stains for unpolished natural stone, we recommend LTP Cement, Grout & Salt Residue Remover .  Once again, the treatment is applied neat and should be agitated immediately with an LTP Black Emulsifying Pad. Then, rinse with clean water and remove the released deposits with a sponge, before rinsing again.  Repeat application until the stain is completely removed.

Stubborn wax residue

For severe wax residue and paint stains, we recommend LTP Solvex – a  non-caustic remover suitable for all surfaces.  Here, use the solution neat, once again, and generously dab onto stains with a cloth or brush.  Work the solution in manageable areas – as far as you can reach without treading into the cleaner.  Leave it to react for up to 30 minutes, applying more solution if it starts to dry out.  Using a coarse, stiff brush or an LTP Black Emulsifying Pad, lift the softened residue from the surface.  Repeat if any staining remains. Lastly, rinse tiles with LTP Grimex, using a 1:3 dilution applied with a cloth, mop or brush, and then give the surface a final rinse.

Topping up protection

If the surface sealer on your tiles is worn or quite old, it’s worth applying a new coat after removing stains, to top up the protection. This can be carried out once the surface is sufficiently dry; this may take a minimum of 24 hours.  We recommend LTP Mattstone H2O for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.     

For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Pumpkin residue on a slate hearth

For Halloween, LTP Grimex and LTP Solvex are a great combo and will remove most stubborn stains from natural and engineered stone tiles.  LTP Grimex is an alkaline-based cleaner, so it’s formulated to break down organic residue, fats, oils, wax and grease.  That covers most stains that you’ll likely to encounter, including pumpkin residue, face-paint, fake blood, sugary treats, hair dye, candle wax and drinks.  It’s also really good at lifting general dirt from porous surfaces.  

LTP Grimex is a heavy-duty grime and stain remover and it can be used on all types of natural stone – including limestone, travertine, slate, terracotta, marble and granite – porcelain and ceramic, regardless of the tile’s finish.  As with any deep cleaner, it’s always best to test the solution on an inconspicuous area first, before applying across the whole surface.  Grimex can be diluted according to the severity of the stain – either 1:10 in warm water for mild staining or 1:3 with warm water for more stubborn marks.  In each case, it’s applied with a cloth or mop. 

How to apply LTP Grimex

For mild stains, using the 1:10 dilution, apply the cleaner and then rinse by wiping the tiles thoroughly with a clean, damp cloth.

For more severe staining, using the 1:3 dilution, apply, agitate the tiles with a scrubbing brush, leave the solution for 5-10 minutes – keeping tiles wet with additional solution – and agitate again.  The treatment can then be mopped up and the tiles should be rinsed thoroughly with clean water to neutralise the surface.   

For more severe wax residue and for paint stains, we recommend treatment with LTP Solvex.  A non-caustic remover, Solvex can also be safely used on all types of natural and engineered stone.  

How to apply LTP Solvex

Generously dab the treatment onto stains with a cloth or brush; always protect hands with suitable gloves.  Work the solution in manageable areas – as far as you can reach without treading into the cleaner.  Leave it to react for up to 30 minutes; during this time, more should be applied if it starts to dry out.  Using a coarse, stiff brush or an LTP Black Emulsifying Pad, lift the softened residue from the surface.  The process should be repeated if any staining remains. Lastly, rinse tiles with LTP Grimex, using a 1:3 dilution applied with a cloth, mop or brush.  Then, rinse again with plenty of water and leave to dry. 

Topping up protection

If the surface sealer on your tiles is worn or quite old, it’s worth applying a new coat after deep cleaning, to top up the protection. This can be carried out once the surface is sufficiently dry; this may take a minimum of 24 hours.  We recommend LTP Mattstone H2O for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  

For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk. Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

When you’ve invested lots of money in new tiles, and possibly other ancillaries, an ‘aftercare sales pitch’ isn’t always welcome. The problem is that when it comes to natural materials, using the right products is really important.

I often use a vein-cut marble project as an example. The case in point was an installation in a high-end London home which cost about £10,000. The housekeeper applied a spray detergent and left it to run down the face of the vein-cut marble within the shower enclosure. The detergent was a general-purpose kitchen and bathroom cleaner, designed to remove limescale and dirt. On a marble-effect porcelain or ceramic surface, this probably wouldn’t have caused too much of an issue. But because the product was highly acidic, contact with the delicate polished marble caused etching and irreversible damage to the whole of the wall surface. In some instances, an attempt could have been made to re-burnish the marble, to polish out the damage, but the amount of water needed and the size of the bathroom ruled this out.

The vein-cut marble damaged with a general-purpose cleaner

The problem with eco-cleaners and natural cleaning hacks

More recently, eco-cleaners and home-made cleaning hacks – regularly touted online – have been causing lots of headaches.

Many natural eco-cleaners can cause damage to natural surfaces, despite being ‘toxic-free’ Naming no names but look closely at the label on a leading anti-bacterial all-purpose cleaner and it states that it isn’t suitable for natural stone because it is acid-based.

Meanwhile, mixtures of vinegar, soda crystals, bicarbonate of soda, water and lemon used to make disinfectants can also damage natural surfaces. That’s because materials like limestone and marble are very sensitive to acid and alkaline which these contain in high levels; vinegar and lemon are very acidic and soda is highly alkaline. Both can erode or ‘eat away’ natural surfaces like stone floors, tiles, countertops and mosaics – and damage any protective sealer that’s been applied. It’s useful to think about the pH scale before choosing – or making – a cleaning product.

The pH scale

Tile manufacturers have become incredibly good at copying natural materials like marble. As a result, some people might not recognise an authentic material or realise that it needs to be treated differently. Multiple surface finishes may then be maintained with the same general purpose ‘tough on grime’ product, rather than a more gentle pH neutral detergent that would provide a safer – and just as effective – solution.

The insurers got involved at the property In London. It materialised that the marble suppliers didn’t offer any maintenance advice at the point-of-sale and the installers didn’t give any guidance on aftercare. The architects who commissioned the marble for the client didn’t specify a sealer or provide any care advice – and the cleaners couldn’t have been expected to know the difference between a glazed engineered tile and polished marble. If the correct advice had been given at any stage, the issue might have been avoided.
Shockingly, the cleaning product that caused the damage cost just 64p. A concentrated, specialist neutral detergent, like our own LTP Stonewash wouldn’t have cost any more, per wash. As awful as this sorry story is, it serves as a good example all these years later; it’s always worth offering that best practice advice, no matter how prickly the customer might be.

To find out more about protection and maintenance, contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk. Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

Tannins are very common in leaves (especially the top surface), roots and heartwood of trees.  In each case, they act as a natural preservative and pesticide. Tannins are also found in food and drinks, like tea, coffee and wine, in which they contribute to an astringent taste.  That same astringency makes leaves and trees less tasty too, offering protection against herbivores.

Because tannins are water-soluble, their molecules are easily transformable onto other surfaces, like tiled paths and patios.  It is this chemical reaction that can create leaf-shaped prints on tiles.  Tannin is also corrosive to ferrous metals and can cause blue-black staining if it comes into contact with iron-rich stone.  Staining is also common underneath or near wooden garden structures, like pergolas, gazebos and furniture, where tannins wash off the surface of the timber. Oak is particularly rich in tannin or tannin acid.  However, in terms of wooden structures, issues can often be avoided if the timber is properly seasoned or primed.

How to remove tannin stains from porcelain tiles

To remove marks caused by leaves and nearby timber structures, we recommend application of LTP Grimex intensive cleaner, diluted 1:3 with warm water, onto the stain.  If the staining is particularly prominent, the surface can be agitated with a scrubbing brush or black pad straight after application. The treatment should then be left to react for 5-10 minutes, with more solution added if it starts to dry out. The tiles should be agitated again and the residue wiped away with a sponge or mop.  Finally, the tiles should be rinsed with clean water.  In extreme cases, neat solution can be used and the same method applied.  

To protect porcelain tiles from future tannin staining, we recommend barrier treatment, LTP Porcelain Tile Protector – a non-film forming solution that creates a barrier against moisture and organic matter and makes ongoing maintenance easier.  Being water-based, the protector can be applied over some residual moisture.  As a rule of thumb, it’s generally safe to apply over the autumn and winter provided that no rain is forecast for 24 hours, either side of application. 

Establishing an outdoor regime

Path and patios will benefit from a thorough clean every couple of months or so – ideally, twice during the winter and three times during late spring/summer. Surfaces that are regularly cleaned will be far easier to keep clean. Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, will also help maintain a seamless aesthetic.

Before embarking on a late summer clean-up, identify any furnishings or materials that aren’t winter or frost proof; these will need to be packed away or covered up before the weather turns. It’s worth emptying and stacking pots as soon as flowers are spent to make patio maintenance easier; some might need to be stored away if they’re not frost-resistant. Pavers can then be swept to remove dirt, debris and early fallen leaves.

It’s worth sweeping up leaves on a regular basis, as they can quickly decay and cause a slip hazard. Certain leaves, like sycamores, are a particular menace; aphids that live on the surface of the leaves excrete a sugary substance that provides a food source for algae. The combined sugar and bacteria leaves a tell-tale black spot stain and sometimes whole leaf prints.

A note about pressure washing
A blast with a jet wash may seem like a quick and easy way to clean pavers but it will only wash dirt off the surface. Over the autumn and winter, use of excessive amounts of water can exacerbate staining and slip issues. Jet washing can also loosen grout, erode a stone surface and damage any protective sealant applied. A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity, and will also help to prevent regrowth of algae and other organic material.

Cleaning pavers – recommended products & methods

To properly remove stains and ingrained dirt from stone and porcelain pavers, we recommend a thorough wash with LTP Grimex. This treatment is also especially effective at removing leaf stains, including those left by Sycamore leaves. Before cleaning, remove furniture, pots and other objects. Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water. Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.
3. Sweep up any residue and rinse thoroughly with clean water.

If your patio is prone to black spot, lichen, moss and algae, we recommend periodic treatment with LTP Blackspot & Algae Remover which will break down microspores and black spot ‘hyphae’ before they colonise. Late summer is a good time to carry out the first treatment. LTP Blackspot & Algae Remover is acid-free, so it’s safe to use on acid-sensitive stone, but it does contain a bleaching action to remove stains. So, as before, test first on an inconspicuous area. Then, remove furniture and other items from the area to be treated.

How to apply LTP Blackspot & Algae Remover:

1. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
2. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
3. Hose off thoroughly with clean water.

Visit and subscribe to LTP TV on YouTube for video demonstrations showing how to apply LTP treatments, including Grimex and Blackspot & Algae Remover.

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar. This will stop the ingress of water and will help protect paving during the freeze and thaw cycle of winter.

Adding in protection

If your patio hasn’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers. Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot. They are also water-based, so can be applied over some residual moisture. As a rule of thumb, it is safe to apply a treatment provided that no rain is forecast for 24 hours, either side of application.

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush, as shown in the Video Aid. It will protect pavers from moisture, stains, weathering and efflorescence, and it’s also UV resistant and non-yellowing. LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier. On newly laid tiles, it also protects against staining and helps increase grout working times. Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces.

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk. For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

What causes the orange stain?

The grout colour change and orange staining that forms either side of the grout joint is often caused by poor drainage and moisture lingering in the joint. If the paver is fixed to a bed that isn’t permeable, and a permeable brush-in jointing compound is used, rain water will dwell in the joint and seep into the edges of the stone. This lingering moisture causes the natural iron content in the stone to oxidise around the edges which creates the rust-coloured stain.  In a dense stone, like granite, the dark edge of the stone can take a very long time to dry out.   Some black brush-in grouts that sit in water for long periods of time can also turn orange because there are pigments of iron in the grout that react with the moisture.

To remove the orange staining, we recommend LTP Ferrex which is specially formulated to remove rust stains that arise from within a paver.  Ferrex can be used most effectively on all types of hard ferrous stones including granite, sandstone and slate. 

Ferrex is an acid-based cleaner – but it is the right kind of acid for harder stones.   It is not the same as Brick Acid which can stain/damage pavers and accelerate oxidisation. 

When diluted as instructed, it can also be used on honed limestone or marble, but not if they are highly polished. To remove rust stains from more sensitive surfaces, it is better to use a non-caustic solution, such as LTP Rust Stain Remover. 

Before application, Ferrex should be tested on an inconspicuous area, to establish which dilution is suitable before treating the whole surface. Here’s a link for more information on application and dilutions. Treatment to remove these types of stain can take between 3-6 hours. 

How to apply LTP Ferrex 

1. After testing on a small area, apply the solution to the surface and spread out evenly. For external applications garden sprayers can be used.
2. For severe staining, surfaces should be agitated using a short haired scrubbing brush or black emulsifying pad. 
3. After 3 – 6 hours, rinse with plenty of clean water. If traces remain after a couple of days, repeat the process. 
4. After treatment, we recommend that the surface is protected from water with an impregnating sealer like LTP External Stone Sealer or LTP Mattstone H20.  This will greatly reduce the risk of rust discolouration returning. 

Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside.  

For more advice, browse LTP TV on YouTube, contact the LTP team direct on 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

Even in cooler years, UV-rays, humidity and rainwater all contribute to this discolouration, as does erosion caused by general wear and tear.  Acidic maintenance chemicals can also accelerate damage, as can jet washing.

How to protect new slabs and restore an existing patio

Good quality water-resistant sealers go a long way in reducing discolouration – and many can enhance colour too – but rainfall also damages the protection that they create.  Topical sealers can be worn away and rainwater that seeps into the stone’s porosity will eventually compromise the effectiveness of an impregnator.  For a long-term solution – which protects the stone and its colour – we recommend LTP Blackstone Sealer & Restorer.  A water-based, impregnating sealer, Blackstone contains a permanent colour intensifying pigment.  To maintain a very dark, pristine finish, annual treatment is recommended, although a treated stone will maintain a far darker aesthetic than an untreated stone for around 4-5 years. 

Why good preparation is key

It’s very important to ensure that surfaces are properly cleaned and prepared before applying a restorative treatment, like LTP Blackstone Sealer & Restorer.  Any solution applied will mix with residue and loose limestone particles; this can be caused by etching when the stone comes into contact with acidic rain. The etching will create a sediment which will be carried into newly exposed capillaries and the sealer, in turn, will draw the sediment out of open pores. When this residue mixes with the sealer, it will create a smeared and patchy appearance.  If you rub your hand across the surface before cleaning, you’ll see a dusty residue; that’s the limestone sediment.  Cleaning the surface opens the pores and removes the sediment.  We recommend our LTP Grimex for a thorough conditioning clean and LTP Blackspot & Algae Remover for areas that are stained with blackspot, algae and mildew, etc.

How to apply LTP Blackstone Sealer & Restorer

Before application, test the solution on a small area to help establish the best method and number of coats needed.  Ideally, apply in temperatures between 5-25°c. Do not walk on treated surfaces until the treatment has completely dried and wear gloves during application. Shake bottle before use.

1. Apply the Restorer on clean, dry slabs, working in manageable areas; apply a small amount of neat solution and spread it out evenly using a sealant applicator, foam roller or paint brush.  Allow the solution to penetrate the paver.  If a second coat is required, apply it immediately after the first coat has absorbed; do not allow the first coat to fully dry before application.
2. Don’t walk on the surface for at least four hours after final application.  Once dry, it may be necessary to work off any visible excess using a dry towel.
3. Allow newly treated surfaces to cure for 24 hours.  You can check that pavers are colourfast by gently rubbing the surface in a few areas with a white cloth or kitchen towel.

When you come to apply the sealer, don’t be tempted to over-apply in order to achieve a darker finish or speed the process up.  Less is more. It’s far better to apply a couple of thin layers than one thick layer.  If you apply too much product in one go it won’t be absorbed properly and the finish will be patchy.  A dilute 1:10 solution of LTP Power Stripper can be used to remove excess sealer if required.

Note. Pets and children should be kept away from areas to be treated during application and until pavers are dry and the treatment is fully absorbed.  If the solution comes into contact with grass and plants, wash off with water once the pavers are dry.

To find out more about protection and maintenance, please visit https://www.ltp-online.co.uk or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

ends  –

Much like polished or honed natural stone, polished concrete contains lots of tiny pinholes which make it porous and prone to staining.  Unsealed concrete can also be very dusty.  Polished concrete densifiers are used during the grinding/polishing process to improve wear resistance, before applying a sealer or a coating. Before grinding begins, it’s good practice to prepare your concrete surface by washing it with a pH neutral cleaner, like our LTP Waxwash or LTP Porcelain Floor Tile Cleaner.

Concrete toppings

The new breed of concrete toppings or ‘micro toppings’ are another option and they’ve extended the design potential of concrete enormously.  Concrete toppings are generally used to upgrade or repair existing concrete surfaces.  They consist of a thinner layer of specialised concrete which is applied over an existing surface. Toppings are hardwearing and they come in lots of decorative colours.  Most are honed, but you can also polish them. They don’t require application of a densifier but they are porous, so it’s good practice to apply a sealer to improve their resistance to staining.

Protecting impregnators and wax finishes

An impregnating sealer, like our water-based LTP Mattstone H20 or LTP Colour Intensifier & Stainblock H20 for deeper enhancement can be applied to both types of surface. If the concrete is sufficiently dense, and a matt finish is desired, then an impregnating sealer can be used without the need to apply a finishing wax.  During application, the first coat is spread out evenly using a sealant applicator and, once absorbed, a second coat is applied 30 minutes later.  Then, 45 minutes after the final coat, the sealer is dry buffed using a rotary machine with a white pad.  Sometimes, the surface may look a little patchy after treatment, especially if the sealer is applied to concrete when it’s still slightly damp.  The patchiness is caused by retained moisture. This is normal and it will eventually dry out.

An additional wax treatment is very popular for both polished/honed concrete and concrete toppings and is used to provide an extra barrier of protection and enhance the appearance.  Options that we recommend include our LTP Glaze Protector which is a hard-wearing metallised flooring grade acrylic wax that reinforces protection and embellishes the surface.  Binding qualities within the seal help to prevent dusting and degradation, and facilitate cleaning and aftercare.  The protector is applied onto clean concrete and spread out evenly with a sealant applicator.  The first coat is then left to dry for 45 minutes and the two further coats are applied using the same method.  For a darker aesthetic, up to six coats can be applied.

Other options are LTP Ironwax Gloss and LTP Ironwax Satin which deliver a slightly different level of enhancement. 

Ongoing maintenance

Correct maintenance is really important.  Although polished concrete is very durable, it can be vulnerable to non-neutral solutions; acidic cleaners will dull the polish and alkali treatments will remove the sealer.  

If a satin finish is applied and the traffic is moderate, and the concrete is only washed using a daily pH neutral detergent, signs of wear or evidence of tracking in the most heavily walked areas may begin to show. Routine mopping with LTP Floorshine, a clean and repair product, is recommended here; the detergent lifts the daily dirt and grime and, as it dries, any minor scuffs and scratches are repaired.  If the concrete is finished with an impregnating sealer and there is no wax applied, then we recommend our LTP Waxwash or LTP Porcelain Floor Tile Cleaner. This will keep surfaces clean without compromising the protection or altering the aesthetic. Washing routinely with LTP Floorshine is also an option here too, if you want to gradually build a slight sheen.

For more information, contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

What is slate?

Slate is compacted mud and silt, from ancient oceans and river beds, that’s been subjected to pressure in a hot environment, deep underground. Eventually, it is forced to the surface by the collision of continents. Dead creatures, older limestone rocks and marble pebbles that have settled on river or sea beds are crushed between the layers of silt and over millions of years harden to form a calciferous deposit and the tell-tale white marking.  

To safely remove the markings, we recommend application of LTP Cement, Grout & Salt Residue Remover after installation and before sealing and grouting. A rapid-cleaning agent, the Remover is non-corrosive and has an acid-replacement formulation, so it’s safe to use on all types of unpolished natural stone.  Once in contact with the calcium carbonate deposits, they start to dissolve.  The surface is then agitated, residue extracted/removed and the slate is rinsed with clean water.   Here are the step-by-step instructions which include more detail:

How to apply LTP Cement, Grout & Salt Residue Remover:

1. Shake container well before use. Gloves should be worn and instructions carefully followed.  Please refer to the Technical Data Sheet on the product page.
2. Apply undiluted solution to the surface of the stone and agitate immediately with an emulsifying pad. 
3. Rinse thoroughly with clean, fresh water. 
4. Extract the released calcium deposits with a sponge, rinse with water and leave to dry.
5. Repeat the process until the lighter marks have been removed.

N.B. Always dilute by adding product to water, rather than water to product – and always rinse surfaces thoroughly with cool, clean water. When treating vertical surfaces, start at the top and work down.

Other causes of white marks

Efflorescent and rising salts can also cause white marks. This is a slightly different issue which can also be treated with LTP Cement, Grout & Salt Residue Remover, although the application method is different and the treatment and the remover is generally diluted before application.  Before treating the slate, it is important to establish whether the markings are calciferous deposits or salt-based.

Protecting slate after treatment

Once the surface is dry, seal the slate to protect it from staining and to repel water, oil and grease.  There are lots of different options which can be used to enhance appearance or create a natural finish; wax finishes are popular because they replace the slate’s naturally dusty appearance with a sheen.  Our range includes two wax treatments which protect internal installations against staining and dirt:  LTP Ironwax Satin and LTP Ironwax Gloss.  The waxes are applied onto clean tiles in thin even coats until the desired finish is achieved, to a maximum of six coats.  Both are self-shine finishes, so no buffing is needed. They’re ideal for areas with lots of foot traffic and where there’s a risk of oil spillage, like kitchens and dining rooms, but aren’t recommended for wet rooms and shower enclosures (Interior use only). The sheen that they create also makes ongoing maintenance easier.

For a more natural look – and for external slate – we recommend LTP Mattstone H2O or Colour Intensifier & Stainblock H2O.  Both are water-based impregnators and, like the waxes, strongly repel water, oil and grease.  Whilst both enhance colour tone, we describe Mattstone as creating a finish that looks like the ‘dry end of the beach’ and Colour Intensifier & Stainblock as the ‘damp end of the beach.’  

The impregnators can be applied in a single thin layer or multiple thin layers, for stronger colour enhancement.  For ongoing maintenance, we recommend our LTP Waxwash for floors and Stonewash or Multipurpose Cleaner for walls internally to protect the stone and the protection applied.

For more information, contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

Over the last decade, the popularity of cement free brush-in grouts for grouting in porcelain and natural stone paving has grown exponentially, but they do bring with them a specific issue concerning amine blush.

Amine blush is a greasy or waxy film that can form on tiles that have been installed using a cement free brush-in jointing compound.  It’s caused by a reaction between the amine hardener in the epoxy and moisture and carbon dioxide in the air during curing. This reaction can lead to a hazy, cloudy or white appearance on the surface of the paver.

On porcelain pavers, if pre-grout protection has not been applied, the process of squeegeeing the grout across the surface and into the joints can result in some of the ingredients getting caught up on the textured surface. This can also happen when applying the grout to textured and porous natural stone. 

After grouting, as surfaces start to dry the residues become more visible. This often leads to the applicator reintroducing water at a critically wrong moment; basically re-wetting and over-wetting the surface. The result is an ‘Amine Blush’.

The use of brick acid and highly caustic cleaning solutions can exacerbate the staining issue and potentially damage the surface of the paver and the jointing material.

It is possible to remove residue safely by using a specialist treatment, like our own non-caustic LTP Solvex, but it is imperative that directions are carefully followed. Removal can often take more than one application and, during the process, resin will soften temporarily but joints will harden again after rinsing and drying.   

Amine Blush before & after removal on porcelain        Amine Blush before & after removal on sandstone

The following steps will help to ensure successful removal:

1. Use a paint brush or roller to apply LTP Solvex directly and spread out evenly in manageable areas at a time; as far as you can reach without stepping into the solution.
2. Leave to work for up to 30 minutes. Give it a nudge with a black nylon pad every 10 minutes to see how well the residues are softening. If it begins to dry on the surface, keep it wet by spraying a light mist of water over the surface.
3. When the residues are softened, add a little water and scrub the surface using a short-haired deck brush, black nylon scrubbing pad or rotary scrubbing machine.
4. Add more water and continue scrubbing.
5. Rinse down using a hose and water or pressure washer on a low setting.
6. Leave to dry.
7. If any traces remain repeat the process.

For more information, please contact LTP on tel. 01823 666213, email info@ltp-online.co.uk or visit  www.ltp-online.co.uk

LTP Solvex is an intensive cleaner or stripper.   A non-caustic formulation, it removes stubborn residue – including congealed fat and wax - by softening deposits so that they can be easily removed from the surface without causing any damage. It can be used on all natural and engineered stone, including sandstone, slate, travertine, terracotta, quarry tiles and porcelain.  LTP Grimex is the ideal partner to Solvex and is used to wash down the surface after treatment, before a final rinse.  

It’s really easy to apply both treatments.  LTP Solvex is poured neat, directly onto stains.  It should be generously dapped onto problem areas with a cloth or brush; always protect hands with suitable gloves.  The solution is then worked in manageable areas – as far as you can reach without treading into the cleaner.  The solution is left to work for up to 30 minutes; during this time, more should be applied if it starts to dry out.  Using a coarse, stiff brush or LTP’s Black Emulsifying Pad, the softened residue is then removed from the surface.  The process should be repeated if any staining remains. 

To wash down the pavers after treatment, LTP Grimex is diluted 1:3 with water and applied with a cloth, mop or brush.  The surface should then be rinsed with plenty of water and left to dry. 

If you’re removing residue from a previously sealed surface – or want to seal an untreated patio to protect it from future stains - a new coat of sealer can be reapplied after cleaning and once the surface is sufficiently dry; this may take a minimum of 24 hours.  We recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

A newly laid black limestone patio is an impressive sight but, unfortunately, the initial wow-factor often doesn’t last long.  Black or very dark grey stone quickly fades and you’re left with a wishy-washy grey aesthetic. So, why does this happen and can anything be done to restore colour and avoid the process repeating?

A combination of UV light and normal rainfall cause this fade-to-grey.  Limestone and many other dark stones are calcium-based, alkaline in nature and sensitive to acid.  They contain a soluble mineral called pyrite; when this is combined with water and oxygen, it forms sulphuric acid, which dissolves the calcium and changes the colour of the stone.  Meanwhile, as rain falls, it absorbs carbon dioxide from the air, which dissolves to form carbonic acid.  This makes it slightly acidic – around 5.6 on the pH scale, rather than a neutral value of pH 7.  Rainwater, humidity and UV-rays all contribute to the discolouration, as does erosion caused by the wind and general wear and tear.  Acidic maintenance chemicals can also cause additional damage, as can jet washing.

How to protect new slabs – and restore an existing patio

Good quality water-resistant sealers go a long way in reducing discolouration – and many can enhance colour too – but rainfall also damages the protection that they create.  Topical sealers can be worn away and rainwater that seeps into the stone’s porosity will eventually compromise the effectiveness of an impregnator.  For a long-term solution – which protects the stone and its colour – we recommend LTP Blackstone Sealer & Restorer.  A water-based, impregnating sealer, Blackstone contains a permanent colour intensifying pigment.  To maintain a very dark, pristine finish, annual treatment is recommended, although a treated stone will maintain a far darker aesthetic than an untreated stone for around 4-5 years. 

Why good preparation is key

It’s very important to ensure that surfaces are properly cleaned and prepared before applying a restorative treatment, like LTP Blackstone Sealer & Restorer.  Any solution applied will mix with residue and loose limestone particles; this can be caused by etching when the stone comes into contact with acidic rain. The etching will create a sediment which will be carried into newly exposed capillaries and the sealer, in turn, will draw the sediment out of open pores. When this residue mixes with the sealer, it will create a smeared and patchy appearance.  If you rub your hand across the surface before cleaning, you’ll see a dusty residue; that’s the limestone sediment.  Cleaning the surface opens the pores and removes the sediment.  We recommend our LTP Grimex for a thorough conditioning clean and LTP Blackspot & Algae Remover for areas that are stained with  blackspot, algae and mildew, etc.

How to apply LTP Blackstone Sealer & Restorer

Before application, test the solution on a small area to help establish the best method and number of coats needed.  Ideally, apply in temperatures between 5-25°c. Do not walk on treated surfaces until the treatment has completely dried and wear gloves during application. Shake bottle before use.

1. Apply the Restorer on clean, dry slabs, working in manageable areas; apply a small amount of neat solution and spread it out evenly using a sealant applicator, foam roller or paint brush.  Allow the solution to penetrate the paver.  If a second coat is required, apply it immediately after the first coat has absorbed; do not allow the first coat to fully dry before application.
2. Don’t walk on the surface for at least four hours after final application.  Once dry, it may be necessary to work off any visible excess using a dry towel.
3. Allow newly treated surfaces to cure for 24 hours.  You can check that pavers are colourfast by gently rubbing the surface in a few areas with a white cloth or kitchen towel.

When you come to apply the sealer, don’t be tempted to over-apply in order to achieve a darker finish or speed the process up.  Less is more. It’s far better to apply a couple of thin layers than one thick layer.  If you apply too much product in one go it won’t be absorbed properly and the finish will be patchy.  A dilute 1:10 solution of LTP Power Stripper can be used to remove excess sealer if required.

Note. Pets and children should be kept away from areas to be treated during application and until pavers are dry and the treatment is fully absorbed.  If the solution comes into contact with grass and plants, wash off with water once the pavers are dry.

To find out more about protection and maintenance, please visit https://www.ltp-online.co.uk or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

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For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01579) 673026 or email angie@afpr.co.uk

Cleaning porcelain pavers

Porcelain pavers can become dirty and slippery due to environment elements and damp weather, muddy boots, animal excretions, fallen leaves, algae, food residue and everything else that they come into contact with.

Just like indoors, outdoor tiles will benefit from a periodic clean.  Keeping the surface clean will prevent a build-up of dirt in the textured surface.  This, in turn, will make ongoing cleaning easier and will maintain the tile’s slip resistance.  As a general rule of thumb, it’s worth cleaning porcelain paving every couple of months or so – ideally, three times during late spring/summer and twice during the winter.  Surfaces that are regularly cleaned will be far easier to keep clean.  Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, will also help maintain a seamless aesthetic.  

Jet washing may seem like the best method for a fast clean but it will only wash dirt off the surface of the pavers. High pressure water will also damage grout joints. A specialist treatment, like our LTP Grimex intensive cleaner, will react with the dirt and grime, whilst our LTP Blackspot and Algae Remover will tackle organic matter – including slippery black spot, lichen, moss and algae – and help prevent regrowth.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

How to apply LTP Black Spot & Algae Remover

1. Apply the Remover neat onto clean pavers with a plastic watering can or light pressure garden spray.
2. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
3. Hose off thoroughly with clean water.  

The LTP range also includes a series of intensive cleaners that are formulated to tackle very specific stains.  For example, LTP Cement, Grout & Salt Residue Remover, LTP Solvex – for the removal of waxes, polymers and epoxy – and LTP Rust Remover.

Recommendations for new installations

Unlike natural stone, porcelain pavers don’t need to be sealed. However, their textured finish which provides grip under foot can create challenges during installation.  Grout and brush-in joining compounds tend to get stuck in the tile’s high/low surfaces, along with general dirt and residue. This creates a white film on the surface of the tile and, as the texture is lost, the slip resistance is also compromised.

Applying LTP Porcelain Tile Protector – a protective barrier treatment – before grouting can help protect the surface of the tile from cement and resin staining during installation. Once dry, the treatment leaves invisible active ingredients behind which provide protection and make the removal of any residue much easier. It also helps to improve and increase the working time of grouts and jointing compounds.  Once residues have been removed and the surface is dry, a further coat makes ongoing cleaning and aftercare easier too.

How to apply LTP Porcelain Tile Protector

1. Ensure that the surface to be treated is completely clean, dry and free from dirt, grime, cement and grout. If necessary, clean the tiles with a dilute solution of LTP Grimex 1:5, using a white pad. Rinse well to remove residues and let the tiles dry.
2. Before grouting, apply evenly to the tile surface using a broad paint brush, foam roller or light pressure sprayer. Allow to dry for 30 minutes. 
3. Apply a second coat. Leave to cure for a minimum of one hour before grouting or pointing. 
4. Once grout/pointing is dry, and all residues have been removed, a further coat of protector can be applied covering the tile and joints.

Enhancing porcelain pavers

It’s also possible to enhance porcelain pavers with LTP Porcelain Tile Enhancer.  The water-based PFAS-free treatment gives tiles a ‘just washed look’, as well as providing resistance to foot traffic, general wear and stains, UV resistance and it makes maintenance easier.  

How to apply LTP Porcelain Tile Enhancer

1. As before, ensure pavers are completely clean, dry and free from dirt, grime, cement and grout. If necessary, clean the tiles with a dilute solution of LTP Grimex 1:5, using a white pad. Rinse well to remove residues and let the tiles dry.  Fixing residues can be removed with LTP Cement, Grout & Salt Residue Remover.
2. Apply treatment with a foam roller, sealant applicator or paint brush to create an even, thin film.
3. Allow to dry for one hour.  Further coats can be applied at right angles to the first, to a maximum of four coats.

As a general rule of thumb, it’s only polished porcelain tiles that need to be sealed and these aren’t recommended for outdoor installation as they don’t provide any grip underfoot.  Porcelain pavers generally have a matt finish and a textured surface; outdoors, wood and stone-effect tiles are the most popular options. However, whilst matt porcelain doesn’t need to be sealed, it will benefit greatly from application of a ‘barrier’ treatment.  Tiles that have a textured surface can very easily become stained by grout and installation residues which become trapped in the tile’s high/low surfaces; it’s a particular issue in external applications, where brush-in jointing compounds are often used.  Once congested, the texture of the tile is lost along with the tile’s slip resistance. Ongoing maintenance will also be more difficult.

The benefits of a barrier treatment

A quality, pre-grout water-based barrier, like LTP Porcelain Tile Protector, applied before grouting, will help protect tiles from staining and will make the removal of residues easier.  It will also make installation easier, as it will improve/increase grouting working times – and a final coat after installation will make ongoing maintenance easier.

•      Ensure that the surface to be treated is completely clean, dry and free from dirt, grime, cement and grout. If necessary, clean the tiles with a dilute solution of LTP Grimex 1:5, using a white pad. Rinse well to remove residues and let the tiles dry.
•      Shake the bottle before use. Before grouting, apply evenly to the tile surface using a broad paint brush, foam roller or light pressure sprayer. Allow to dry for 30 minutes. 
•      Apply a second coat. Leave to cure for a minimum of one hour before grouting or pointing.
•      Once grout/pointing is dry, and all residues have been removed, a further coat of protector can be applied covering the tile and joints.

For more advice on stone and tile protection and maintenance, contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit http://www.ltp-online.co.uk

Born into the tile business, Matt managed Derbyshire-based Country Tiles East Midlands Ltd for over ten years, having originally joined the business – which was founded by his parents – in 1997. The successful family-run firm offered one of the largest selections of wall and floor tiles in the Midlands.

“I’m incredibly proud of everything that we achieved as a family and of the fabulous relationships built so far in my career. I’m now equally excited to be starting a new chapter with LTP; a company that I’ve had a working relationship with for most of my time in tiling. I already had inside knowledge; I knew LTP as a friendly, professional company, with a great product range and great potential. I think that you really need to believe in your products and I know, from experience, that LTP solutions really do work,” explained Matt.

LTP Director, Mark Atkins commented, “I’ve known Matt for most of his working life and it’s fabulous to have someone with his knowledge and experience join our technical and sales team.”

Outside work, Matt plans to spend more time with his family, at the touchline watching his son play football and walking his two Cockerpoos, Berty and Marv, in the Derbyshire countryside.

To find out more about LTP, please call 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

LTP Paving, Patio & Masonry Sealer can be used on honed, rough cut, flamed and brushed stone surfaces, including limestone, granite, cement, slate, bricks and blocks.  As well as protecting surfaces from organic dirt, and promoting easier maintenance, it also protects against moisture ingress, helping to prevent green growth on paths, patios and walls.

The new treatment is quick drying and easy to apply. Before application, surfaces should be clean, dry and free from dirt, grime, cement and grout residue.

 

We've always been big fans of slate tiles because they’re so practical and versatile.  Ever popular on our roofs, they’re also great for floors and walls and are offered in many more shades than matt black, including fabulous multicolours that mix all sorts of colours, like chocolate, ochre and rust.  Different surface finishes expand options further, from uneven ‘riven’ surfaces and softer brushed finishes, which provide good grip under foot, to smooth, honed tiles. There are also some really inventive products out there, like ZClad™ - a natural stone cladding system made from modular z-shaped panels.

Slate is very hardwearing and it’s generally far less porous than natural stone.  It is, however, vulnerable to oil and grease, so it’s important to protect tiles as you would limestone.  There are lots of different options which can be used to enhance the slate’s appearance or create a natural finish.  Wax finishes are popular because they replace the slate’s naturally dusty appearance with a sheen.  Our range includes two wax treatments which protect internal installations against staining and dirt:  Ironwax Satin and Ironwax Gloss.  The waxes are applied onto clean tiles in thin even coats until the desired finish is achieved, to a maximum of six coats.  Both are self-shine finishes, so no buffing is needed. They’re great for areas with lots of foot traffic and where there’s a risk of oil spillage, like kitchens and dining rooms, but aren’t recommended for wet rooms and shower enclosures. The sheen that they create also makes ongoing maintenance easier.

For a more natural look – and for external slate – we recommend LTP Mattstone H2O (or its spirit-based equivalent) or Colour Intensifier & Stainblock H2O.  Both are water-based impregnators and, like the waxes, strongly repel water, oil and grease.  Whilst both enhance colour tone, we describe Mattstone as creating a finish that looks like the ‘dry end of the beach’ and Colour Intensifier & Stainblock as the ‘damp end of the beach.’  

The impregnators can be applied in a single thin layer or, multiple thin layers, for stronger colour enhancement.  For ongoing maintenance, we recommend our LTP Waxwash for floors and Stonewash or Multipurpose Cleaner for walls internally and Grimex externally, to protect the stone and the protection applied.

To find out more about protection and maintenance, please visit https://www.ltp-online.co.uk or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk.  Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

A black, sticky residue created by spilt sugary drinks, Blacktop tends to be quite pronounced on natural stone floors. The residue can’t be removed with regular cleaning products and creates a tell-tale blackened appearance.  The greater the residue, the more difficult cleaning becomes, creating a vicious circle.   Heavy footfall and wear compound the issue and tiles quickly look tired and dull.  Using the correct products and methods, floors can be completely renovated. In the case of the Cheltenham wedding and entertainment venue, a regular Green Man commercial deep clean restores the appearance and practical features of the flagstones.

Flagstones before treatment with LTP.

Work in progress.

At the venue, the cleaning process began with the flagstones being swept to remove loose debris and soiling.  A rotary agitation machine was then used to apply LTP Grimex intensive cleaner – a heavy-duty grime remover that’s formulated to react with and remove oil, grease, wax and ingrained dirt. Brushes on the bottom of the machine gently breakdown the blacktop and the cleaning solution is then given time to dwell and to work on any stubborn soiling, to ensure maximum results are achieved.

Green Man technicians then manually scrubbed the grout lines – the most effective way to get into the joints – before removing the resulting slurry using a wet vac and thoroughly rinsing the surface.

After deep cleaning, LTP Mattstone H2O was then applied to the flagstones.  A water-based impregnating sealer, Mattstone helps protect natural and engineered stone surfaces from staining, without changing appearance or compromising the floor’s breathability.  

“The finished results here were truly great! The flagstones look so much cleaner and brighter and are all ready to stage more celebrations throughout the year!” explained Green Man’s Jon Gardner.

For more information about the project and specification, please contact the LTP team on tel. 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk.  To find out more about the Green Man project, please visit https://greenmancleaning.co.uk

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For further media information and photography, please contact angie@afpr.co.uk

The Tunbridge project spanned a stepped entrance to a large period property, which has been converted into nine apartments. As a result of environmental factors, along with years of wear and tear, the area had become deeply soiled with organic residue, black spot and algae and rust stains. The build-up had been absorbed into the stone’s porosity on both the steps and chequered tile area; this created staining and discolouration and, during wet weather, a potential slip hazard.

To renovate the surface, Adrian first treated the area with two applications of LTP Blackspot & Algae Remover using a light pressure sprayer. The viscous treatment, which removes black spot, lichen, moss and stains, is applied neat and left to absorb for 2-4 hours before rinsing. It can be used on all types of external paving, including natural stone, concrete and porcelain. During the treatment, Adrian periodically re-applied the solution so that the stone remained wet, to ensure sufficient contact time. He removed the solution – between applications and afterwards – using a wet vac.

Before Treatment

After Treatment with LTP Products

“We have used LTP products for over ten years and they consistently outperform their competitors in the market. The help desk is amazing and they know their products; even when we come across an unusual problem, they have the answer. Thank you LTP!” commented Adrian Bond.

““The results are absolutely stunning and the steps have been completely transformed. They now look incredible – thank you!“ added Property Manager, Sarah Gamble.

To find out more about LTP treatments, please visit https://www.ltp-online.co.uk, call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk. For more information about Bond Stone Cleaning, please visit http://www.bondstonecleaning.co.uk

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For media information and photography, please contact: angie@afpr.co.uk

Different types of algae

Algae comes in different forms and often causes a green film or powdery deposit on pavers.  The term algae also includes cushion-like moss; Liverwort, which is a flat green growth with tiny leaf-like lobes, and Lichen, which is more crust-like and can also be yellow or orange. Jelly-like growths are also common; they’re often black or dark green and these are caused by a cyanobacteria called Nostoc.  None of these growths are hazardous - infact, lichen is particularly common in areas with clean air, so its appearance can be a positive sign – but slippery hard surfaces can be.

Another common problem is black spot – a speckle-like deposit that can be black or white.  Black spot is a dust-like lichen that originates from plants and trees. It colonises on pavers, sending tendrils or ‘hyphae’ down into any cracks or porosity, searching for nutrients. It takes about 2-3 years to become established below the surface and it creates a slippery residue on the surface of pavers. 

Addressing problem areas

Why water doesn’t work

A pressure washer and often a dose of household cleaner is a common go-to solution for slippery pavers.  However, excessive water only makes conditions even better for algae to flourish and pressure washing can damage the surface of the pavers, any sealer applied and it will loosen grout.  Water also won’t target hyphae or filaments anchored into place below the surface.   A specialist approach is necessary to effectively remove residue and microspores below the surface; any treatment used needs to break-down the slippery residue: to have a bleaching action to restore the colour of the paver, and to target any growth below the surface. 

Care should be taken in selecting a suitable treatment.  If a solution is acidic, it will damage acid sensitive material and erode the grout joint.  We recommend LTP Black Spot & Algae Remover which can be safely used on all types of natural stone, concrete, brick and porcelain.  This treatment removes all types of organic residue, slippery matter and stains, breaking down hyphae below the surface, as well as preventing regrowth.  When applying the Remover, it’s also important to treat the whole area of paving, for a uniform appearance.

Removing large deposits and applying LTP Black Spot & Algae Remover

Before washing pavers, any large, mossy deposits should be removed.  A long-handled block paving brush is a useful tool.  The whole area should then be swept clean to remove other residue, dirt and leaves.  

LTP Black Spot & Algae Remover should be applied neat to swept pavers, using a watering can or light pressure garden spray, where it fizzes during treatment.  It should be left to act for 2-4 hours and surfaces then hosed with clean water.  The solution can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.  See a video aid on the product page.

After treatment, it’s worth protecting the surface; we recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector, for matt porcelain pavers.  Both will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae.

For more support and advice, browse the LTP blog, visit and subscribe to LTP TV on YouTube or contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

Leah joined LTP in September 2021, as part of its new Apprenticeship Programme. She successfully completed an 18-month Level 3 Business Administrator Apprenticeship spanning all aspects of the firm’s business, including the retail counter, office administration and technical training. Since completing the programme, she has been actively involved in technical support, working more closely with the firm’s growing contract customer base.

LTP Director, Mark Atkins commented, “Since joining us three and a half years’ ago, Leah has really impressed us with her commitment and enthusiasm and we’re proud to be able to support her, as she moves into a new role.”

LTP supplies sealing, cleaning and maintenance products to over 700 stockists throughout the UK and Ireland and also exports to countries including Bulgaria, China, Czech Republic, Ireland, Romania, Spain and the UAE. As well as LTP and ECOPROTEC branded solutions, it also develops customer own-branded products, with turnover increasing by over 300% in the last three years.

To find out more about LTP, please call 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

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For media information and photography, please contact Angela Fitzhugh at angie@afpr.co.uk

On clean, dry and residue-free surfaces, LTP Porcelain Tile Enhancer is applied with a foam roller, sealant applicator pad or paint brush until an even, thin film is created. The treatment should be left to dry for one hour. For a more enhanced appearance, further coats can be applied at rights angles – and with an hour’s drying time between each application – to a maximum of four coats. The treatment can also be used on existing tiles and pavers which should first be cleaned with LTP Grimex Intensive Cleaner and then rinsed and left to dry for 24 hours before application.

Being water-based, the enhancer can be applied over residual moisture and is safe to use in unventilated spaces. It is also breathable, so will not trap moisture within the tile or substrate. To maintain the glossy aesthetic, tile and pavers can be renovated by stripping the original coating using LTP Solvex and reapplying every 2-3 years. Surfaces should be routinely swept and regularly mopped using LTP Porcelain Floor Tile Cleaner.

LTP Porcelain Tile Enhancer is available in one litre and five litre units and has an approximate coverage of 30-40 m2 per litre, per coat, depending on the substrate texture.

To find out more, please visit https://www.ltp-online.co.uk/prod/ltp-porcelain-tile-enhancer or contact the LTP Technical Team on 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

Polished porcelain and polished glazed porcelain tiles provide a very sleek and elegant surface finish – and one that’s durable and easy to maintain. Despite their high sheen aesthetic, these tiles are vulnerable to staining.  Many are pre-sealed as part of the manufacturing process but it’s really important to check that this protection is up-to-scratch. Tiles can be vulnerable to grout residue during installation and if a factory-applied sealer isn’t in place – or is inferior – permanent staining can result. 

In order to achieve a highly polished ‘marble like’ appearance, many porcelain tiles are glazed before they’re mechanically polished. This gives the tile a higher lustre and increases reflection, and creates a super polished aesthetic. During this abrasive process, it’s not uncommon for tiny cracks called micro fissures to appear within the surface of the glaze.  These cracks are very small and can’t be seen with the naked eye. During installation, fine grout and pigments can accumulate in these micro fissures, creating a picture frame outline or halo-type stain around the edge of the tile.   The fissures are so small that they’re impossible to penetrate in order to remove the residue. 

Unprotected polished porcelain tiles will also be vulnerable to any spillage or stain that’s able to penetrate these fissures going forward, so adequate protection is key. 

Various stains on polished porcelain tiles.

How to check if tiles are sufficiently protected

In order in establish whether a tile is adequately sealed, a quick test can be carried out.  Using a black marker pen, make a small mark on a tile off-cut. Leave it to dry for 10-15 minutes and then try to wipe the pen mark off the surface.  If it remains, or it leaves an outline or halo, you will need to seal your tiles before grouting.

How to protect polished porcelain tiles

To protect tiles, we recommend LTP MPG sealer.  MPG is a colourless, impregnating sealer that contains a nano wax that’s able to penetrate the tiny micro-fissures.  It protects tiles from grout residue, as well as water, oil, grease and dirt. MPG is applied with a soft cloth, sealant applicator or sponge and, when dried, it is buffed into the tile with a clean, dry cloth or a buffing machine.   

Once the sealer has cured, it remains in place, providing protection during installation and going forward.  For regular cleaning and aftercare of porcelain floors, we recommend our LTP Porcelain Floor Tile Cleaner and, for walls and worktops, LTP Multipurpose Cleaner.

For more advice on tile and stone care, please visit https://www.ltp-online.co.uk, call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

Things to avoid
Homemade cleaning solutions and steam cleaning are two cleaning methods to avoid. The most common homemade hacks – vinegar, lemon and baking soda – are all very acidic and will damage limestone. Bleach should also be avoided; whilst it is alkaline, rather than acidic, it is still too harsh for natural stone. Steam cleaning isn’t recommended either, as it can damage a stone sealer and compromise protection. Intense heat can also cause ‘spalling’ or flaking of the limestone.

What to use for routine and deep cleaning
A regular ‘routine’ clean will maintain a hygienic environment and a tile’s aesthetic. Once grease and dirt builds up on a surface, tiles will be more difficult to clean, and they may become slippery. A periodic deep clean in high traffic areas may also be necessary. Often, the same detergent can be used for routine and deep cleaning, with the dilution ratio and method adjusted in suit. This is the case with LTP Grimex – the detergent that we recommend for limestone floor tiles.

https://youtu.be/DeJtsN3MBFU

Methods for routine and deep cleaning
Routine cleaning with LTP Grimex: Sweep or vacuum the floor, to remove dust and loose dirt. Dilute one part LTP Grimex in 10 parts warm water. Apply with a cloth or mop. Wipe off thoroughly with a clean damp cloth.

Deep cleaning with LTP Grimex: Sweep or vacuum the floor to remove dust and loose dirt. Dilute one part LTP Grimex in 3 parts warm water. Apply liberally, spreading over the surface of the tiles. If necessary, agitate with a scrubbing brush. Leave to react for 5-10 minutes, keeping the surface wet with additional solution. Agitate surface again, mop up and rinse thoroughly with clean water.

How to maintain a seamless surface, from home to garden
If the same limestone tile is installed from inside to outside – for example, through bi-fold doors – it’s important to maintain both areas to avoid an unsightly contrast. Whilst LTP Grimex can be used on outdoor slabs, a specialist external treatment will help tackle issues specific to paths and patios, like black spot, lichen and moss which cause discoloration and create a slip hazard. We recommend LTP Blackspot & Algae Remover.

https://youtu.be/RDBvDMXKSCU

How to remove stubborn stains
If staining is still present on a floor that has been deep cleaned, we recommend use of a specialist treatment. Various solutions are available to safely remove common stains, like oil and grease, rust, wax, grout and salt residue. LTP’s full range of intensive cleaners, for all tile types, are shown here. Always check that the product is suitable for limestone. If the treatment is designed to strip the surface, you will need to re-apply a sealer to reinstate stain protection.

For more advice on the best maintenance regime for your limestone floor, please call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

A case in point

Some years ago, we were asked to visit a fabulous residential property in Central London. A fine vein cut marble – mechanically polished to a high sheen – had been installed throughout a wet room. The cost of the marble and installation was around £10,000 at the time; probably considerably more now. A general-purpose kitchen and bathroom spray cleaner had been applied to the top of the wall and then left to run down the face of the brown-toned marble. On a marble-effect porcelain or ceramic surface this probably wouldn’t have caused too much of an issue. However, the highly acidic solution caused etching and considerable damage to the whole of the marble wall surface. Ironically, the product that caused the damage cost just 64p. A suitable, concentrate pH-neutral detergent probably wouldn’t have cost a great deal more.

So, how do you renovate stone that’s been scuffed or damaged with acid? We recommend a three-stage process in which the stone is mildly etched across the whole surface, to even it out. It is then neutralised and, finally, an enhancing impregnating sealer is applied to restore the depth of colour. This process can be carried out on all types of natural stone, including marble, granite and limestone tiles, vanity units and counter tops.

Bear in mind that acid damage isn’t just caused by cleaning products. It can also be caused by other acidic liquids like tea, coffee, wine, vinegar, lemon, ammonia, tannins and cosmetics, etc. Care should also be taken when using ‘eco’ cleaning sprays, as many contain natural acids.

Three-step renovation

During Phase I, we first apply LTP Cement, Grout & Salt Residue Remover. This treatment removes residue and mildly etches the stone. Normally it would only be used on unpolished natural stone but, in this case, it is applied to even out appearance. The treatment is formulated from an acid-replacement solution, so it’s safe to use in this particular situation. Products containing hydrochloric-based acids should never be used, as they will cause further damage to the stone and metal trims, as well as emitting harmful fumes. Firstly, the Remover is diluted 1:1 with cool water and carefully applied to each tile, without overlapping from one tile to another. The surface is then agitated immediately using a black emulsifying pad. Care should be taken not to step on floor tiles during this phase. Tiles should then be rinsed immediately with cold water and a sponge, twice, using clean water each time. The surface should then be left to dry.

For Phase 2, we recommend LTP Grimex Intensive Cleaner, which is diluted 1:3 with cool water, applied across the surface and left to act for 15 minutes. This neutralises the stone. The tiles and grout joints should then be scrubbed using a white emulsifying pad, before any residues are extracted with a sponge or floor cleaner. The tiles should then be rinsed with clean water a second time and any final residue removed, before the tiles are left to dry.

During Phase 3, a colour enhancing sealer is applied to restore the natural colour depth of the stone. We recommend LTP Colour Intensifier & Stainblock. The sealer is applied evenly with an applicator and allowed to dry naturally. After 45 minutes, tiles are buffered with a microfibre cloth. Tiles should then be left to dry for a minimum of 12 hours before they are walked on and should not come into contact with water for a further three days. Underfloor heating should not be switched on throughout the three-stage process.

Ongoing maintenance

Going forward, stone tiles should always be cleaned with a gentle pH-neutral detergent. We recommend our LTP Waxwash for floors and LTP Stonewash for wall tiles. Both will thoroughly clean whilst protecting the newly-applied sealer. A regular routine cleaning regime will make ongoing maintenance easier and will retain the stone’s aesthetic and most stone surfaces will benefit from a wet clean around once a week.

For more advice, please visit https://www.ltp-online.co.uk, call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

Newly installed internal stone tiles need to be sealed to protect them from stains.  Whilst really hardwearing, stone is generally slightly porous and sensitive to acid and this makes it vulnerable to staining. Good surface protection helps in other ways too – it retains the tile’s aesthetic; it makes ongoing maintenance easier (because you’re not constantly battling a build-up of dirt and residue) and, in textured floor tiles, it helps to retain slip resistance. 

This advice relates to all types of stone tile, regardless of material and finish.  The most popular types include limestone, travertine, granite, marble and slate.  In our latest blog, we run through the best products and methods to use, to protect your stone floor and wall tiles.  

Surface sealers v impregnating sealers

Protective sealers generally fall into two camps – surface sealers and impregnating sealers:

Surface sealers create a surface film that protects the stone.  The downside is that this tends to disguise the tile’s natural appearance and it stops the surface from breathing.  Any damp or moisture within or underneath the stone will be unable to escape and will become trapped underneath the sealer.  This will create a milky appearance. 

In contrast, impregnating sealers are absorbed into the stone’s porosity, so they don’t create that surface film.  The stone retains its natural appearance and is able to breathe.  Colour enhancing impregnating sealers work in the same way but they enrich colour tone. 

Both types of sealer are either solvent/spirit-based or water-based.  Historically, the molecules of a solvent/spirit-based sealer were smaller than water, so they tended to penetrate more quickly and deeply, which provided a better seal.  This is no longer the case. Today’s high-quality water-based sealers are equal to or superior to their solvent/spirit-based equivalents. They also bring with them safety and environmental benefits, as they are low VOC.

Applying a sealer

Before applying your sealer, give your tiles a thorough clean to remove any residue.  This will prevent it from becoming trapped underneath the sealer and compromising the performance of the protector, as well as the tile’s aesthetic.  We recommend LTP Grimex, diluted 1:10 in warm water.  Apply with a cloth or mop and wipe off thoroughly with a clean, damp cloth. 

For indoor stone floor and wall tiles, we recommend either LTP Mattstone H2O for a completely natural finish or LTP Colour Intensifier & Stoneblock H2O which increases natural colour vibrancy.  Both are applied generously onto clean, dry tiles.  A foam roller or paint brush is recommended for rough cut, tumbled, textured or riven surfaces and a sealant applicator, lint-free cloth, lamb’s wool applicator or sponge for honed, smooth and polished stone.  

On very porous stone, further coats should be applied at hourly intervals until the surface is saturated; these tend to be the textured tiles, rather than the smooth or ‘honed’ surfaces. Any excess should then be removed from all tiles after one hour with an absorbent towel or microfibre cloth; in very large areas, a buffing machine may be used.  

In the case of highly porous encaustic tiles, we recommend sealing tiles before and after grouting.  This protects the stone from grout residue.  Terracotta also needs sealing but the procedure here is slightly different, as explained in our blog, How to protect terracotta tiles.

TOP TIP!  On wall tiles, always apply the sealer from the bottom up. This will prevent the solution from running down the surface of the tiles and drying unevenly, before you’ve had chance to work it into the stone.

Here are links to step-by-step instructions for each treatment:

LTP Mattstone H2O

LTP Colour Intensifier & Stoneblock H2O

Topping up protection

Natural stone tiles may begin to show signs of wear and patches of ingrained dirt after around 3-5 years, depending on location and traffic.  To top up protection, the tiles should be thoroughly cleaned with LTP Grimex and the sealer re-applied. 

Ongoing maintenance

Stone tiles should always be cleaned with a gentle pH-neutral detergent.  We recommend our LTP Waxwash for floors and LTP Stonewash for wall tiles.  Both will thoroughly clean whilst protecting the newly applied sealer.  A regular routine cleaning regime will make ongoing maintenance easier and will retain the stone’s aesthetic – and, in case of textured floor tiles, its slip resistance. Most stone surfaces will benefit from a wet clean around once a week.

For more advice, please visit https://www.ltp-online.co.uk, call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

Stone wall and floor tiles provide a fabulous natural finish that’s hardwearing and easy to look after – but correct maintenance is really important. All stone tiles are sensitive to acid and many are porous too, so they need to be cleaned and protected with products that suit their natural characteristics. Luckily, these surfaces are pretty forgiving, so even tiles that have been neglected or maintained with the wrong solutions can be restored with the right products. 

Refurbishing stone tiles

Stone tiles that haven’t been correctly protected or maintained tend to fall into one of two categories: there may be a build-up of organic residue, or the original sealant or stone itself may be etched from scuffing or the use of acid-based products.  

Heavily soiled surfaces.  To deep clean stone tiles, we recommend application of our LTP Grimex intensive cleaner. Floor tiles should be swept/vacuumed to remove dust and loose dirt and wall tiles should be lightly brushed to remove residue. Grimex should then be diluted 1:3 in warm water and applied liberally across the surface of the tiles.  If necessary, tiles can be agitated with a scrubbing brush. The solution should then be left to react for 5-10 minutes and additional solution applied to keep the tiles wet, should it start to dry out. Lastly, the surface should be agitated again, the solution mopped or wiped up and the tiles should be rinsed thoroughly with clean water.

Damaged/etched surfaces.  Stone that’s been damaged by scuffs or acid can be renovated by mild etching across the whole affected surface, to even it out, and then resealing with an enhancing impregnating sealer to restore depth of colour. We recommend using LTP Cement Grout & Salt Residue Remover to first even out appearance.  The surface should then be cleaned and neutralised with LTP Grimex, before resealing with LTP Colour Intensifer & Stainblock.  This process is explained in detail in our Stone Restoration Guide. 

Sometimes, a specialist treatment may be needed to remove a specific stain, like cementitious grout, epoxy grout residue, oxidised linseed oil, paint or rust, and expert advice should always be sought.  The LTP range includes a series of professional treatments formulated to safely remove these types of stain from stone surfaces. 

Protecting stone tiles

Once heavily soiled tiles have been thoroughly cleaned, they will need to be protected against staining.  This will also make ongoing maintenance easier.  The best practice is the application of a water-based impregnating sealer, which will protect the surface without forming a film or altering appearance.  A water-based, low VOC product will also provide the safest option, in terms of application and sustainability. 

Historically, the molecules of a solvent or spirit-based sealer were smaller than water, so they tended to penetrate more quickly and deeply, which provided a better seal.  This is no longer the case. Today, high-quality water-based sealers are equal to or superior to their spirit-based equivalents.

Applying a sealer

For indoor wall and floor tiles, we recommend either LTP Mattstone H2O for a completely natural finish or LTP Colour Intensifier & Stoneblock H2O which increases natural colour vibrancy.  Both are applied generously onto clean, dry tiles.  A foam roller or paint brush is recommended for rough cut, tumbled, textured or riven surfaces and a sealant applicator, lint-free cloth, lamb’s wool applicator or sponge for honed, smooth and polished stone.  

On very porous stone, further coats should be applied at hourly intervals until the surface is saturated; these tend to be the textured tiles, rather than the honed surfaces. On wall tiles, the sealer should be applied from the bottom up.  Any excess should then be removed from all tiles after one hour with an absorbent towel or microfibre cloth; in very large areas, a buffing machine may be used.  

In the case of highly porous encaustic tiles, if grout needs replacing as part of a renovation, we recommend sealing (clean tiles) both before and after grouting.

Topping up protection

Stone tiles may begin to show signs of wear and patches of ingrained dirt after around 3-5 years, depending on location and traffic.  To top up protection, the tiles should be thoroughly cleaned with a deep cleaner like Grimex and the sealer re-applied. 

Ongoing maintenance

Stone tiles should always be cleaned with a gentle pH-neutral detergent.  We recommend LTP Waxwash for floors and LTP Stonewash for wall tiles.  Both will thoroughly clean whilst protecting the newly applied sealer.  A regular routine cleaning regime will make ongoing maintenance easier and will retain the stone’s aesthetic – and, in case of textured floor tiles, its slip resistance. Most stone surfaces will benefit from a wet clean around once a week.

For more advice, please visit https://www.ltp-online.co.uk, call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

Cleaning floors and tiled areas is one of the hardest jobs and many of us reach for a heavy-duty cleaner.   However, it rarely offers the best solution.  Most of these detergents – including many of the eco ranges - contain acid which will damage tiles, grout, chrome fittings and any protective sealer that’s been applied.  This is a particular issue for natural surfaces like stone and marble, which are acid sensitive.  To deep clean safely, we recommend LTP Grimex.  As the name suggests, it removes grime and stains, including oil, grease, ingrained dirt and wax.  It’s safe to use on natural stone, as well as porcelain and ceramics tiles, and can also be used to deep clean marble and granite worktops.

For grout and silicone that’s stained with mould spores, we recommend LTP Mouldex.   This treatment comes in a pump spray and it’s formulated to cling to surfaces, which targets the treatment and prevents run-off.   Mouldex has a bleaching action which helps restore colour and it’s antibacterial, so it helps prevent mould regrowth.  It can be used on natural as well as artificial stone – and on coloured grout – but it’s always best to test first, in an inconspicuous area.

https://www.youtube.com/watch?v=fN8-CC-xg-o

How to use LTP Grimex

For areas that are slightly grubby – and for absorbent tiles – dilute one part of Grimex to ten parts of warm water.  Apply with a cloth or mop and rinse with clean water.  For dirtier surfaces, use a stronger 1-3 dilution and agitate the surface with a brush.  Let the solution act for 5-10 minutes, mopping with additional solution to keep the tiles wet, and agitate again before mopping up and rinsing thoroughly with clean water.

For built-up grime and stubborn stains, Grimex can be used neat and then thoroughly rinsed.

Sometimes, tiles that have been deep cleaned with a low dilution of intensive cleaner will need to be resealed.  The easiest way to see if a sealer is still performing is to carry out a water test:

1. Drop a bead of water onto the surface.

2. If it sits in place, it is well sealed. If the water quickly soaks into the tile or makes the surface look darker, then it needs resealing.

To top up protection, choose a suitable sealer from LTP’s range and carefully follow application directions.

How to use LTP Mouldex

Before applying the treatment, make sure that tiles are completely dry.  Spray Mouldex 5-10cm from the surface and leave it to act for 45 minutes.  Then, apply a little water and agitate with a stiff brush to help lift the grime and dirt. Finally, rinse the surface thoroughly with water and a clean sponge.  For silicone and elastic grouting, and for stubborn stains, the treatment can be left overnight.    NB.  Mouldex shouldn’t be used with acid-based residual grout removers or other acid- based cleaners.

Rinse-free routine cleaning

Once the deep cleaning’s done, LTP Stonewash is a great all-rounder.  A rinse-free pH natural spray cleaner, it can be used on all hard surfaces, from marble to polished porcelain. For walls and work tops, spray 20 cm from the surface and wipe over with a clean, damp cloth. For natural and artificial stone floors, we recommend LTP Waxwash; just dilute 2-3 capfuls (or 5 for dirtier surfaces) into a bucket of warm water, mop and allow to dry.  

For more advice, browse our Technical Blog or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk

Different types of algae

The term algae includes cushion-like moss, Liverwort, which is a flat green growth with tiny leaf-like lobes, and Lichen, which is more crust-like and can be yellow or orange. Jelly-like growths are also common; they’re often black or dark green and these are caused by a cyanobacteria called Nostoc. None of these growths are hazardous – infact, Lichen is particularly common in areas with clean air, so its appearance can be a positive sign – but slippery hard surfaces can be.

Another common problem is black spot – a speckle-like deposit that can infact be black or white. Black spot is a dust-like lichen that originates from plants and trees. It colonises on pavers, sending tendrils or ‘hyphae’ down into any cracks or porosity, searching for nutrients. It takes about 2-3 years to become established below the surface and it creates a slippery residue on the surface of pavers.

What not to use on slippery paths

A pressure washer and a dose of household cleaner is a common go-to solution for slippery pavers. However, excessive water only makes conditions even better for algae to flourish and pressure washing can damage the surface of the pavers, any sealer applied and it will loosen grout. Water also won’t target hyphae or filaments anchored into place below the surface. A specialist approach is necessary to effectively remove residue and microspores below the surface. Any treatment used needs to break-down the slippery residue, have a bleaching action to restore the colour of the paver and target growth below the surface.

How to treat slippery paths

Care should be taken in selecting a suitable treatment. If a solution is acidic, it will damage acid sensitive material and erode the grout joint. We recommend LTP Black Spot & Algae Remover which can be safely used on all types of natural stone, concrete, brick and porcelain. This treatment removes all types of organic residue, slippery matter and stains, breaking down hyphae below the surface, as well as preventing regrowth. When applying the remover, it’s also important to treat the whole area of paving, for a uniform appearance.

 

Before applying any treatment, large, mossy deposits should be removed. A long-handled block paving brush is a useful tool. The whole area should then be swept clean to remove other residue, dirt and leaves. LTP Black Spot & Algae Remover is then applied neat to swept pavers, using a watering can or light pressure garden spray, where it fizzes during treatment. It should be left to act for 2-4 hours and surfaces then hosed with clean water. The solution can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.

 

Before (left) and after (right) treatment with LTP Black Spot & Algae Remover

 

Pets should always be kept away during applications of cleaning and sealing products – throughout the whole application process and, in terms of cleaning, until surfaces have been properly rinsed. If undiluted solution comes into contact with plants, etc, they should be rinsed off with plenty of clean water. When surfaces are being rinsed off with a hose or watering can, as part of the application process, then any residual product will naturally degrade.

After treatment, it’s worth protecting the surface; we recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector, for matt porcelain pavers. Both will help prevent the absorption of moisture and organic particles, reduce staining and the spread of algae.

For more support and advice, browse the LTP blog, visit and subscribe to LTP TV on YouTube or contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

Tannins are very common in leaves (especially the top surface), roots and heartwood of trees.  In each case, they act as a natural preservative and pesticide. Tannins are also found in food and drinks, like tea, coffee and wine, in which they contribute to an astringent taste.  That same astringency makes leaves and trees less tasty too, offering protection against herbivores.

Because tannins are water-soluble, their molecules are easily transformable onto other surfaces, like tiled paths and patios.  It is this chemical reaction that can create leaf-shaped prints on tiles.  Tannin is also corrosive to ferrous metals and can cause blue-black staining if it comes into contact with iron-rich stone.  Staining is also common underneath or near wooden garden structures, like pergolas, gazebos and furniture, where tannins wash off the surface of the timber. Oak is particularly rich in tannin or tannin acid.  However, in terms of wooden structures, issues can often be avoided if the timber is properly seasoned or primed.

How to remove tannin stains from porcelain tiles

To remove marks caused by leaves and nearby timber structures, we recommend application of LTP Grimex intensive cleaner, diluted 1:3 with warm water, onto the stain.  If the staining is particularly prominent, the surface can be agitated with a scrubbing brush or black pad straight after application. The treatment should then be left to react for 5-10 minutes, with more solution added if it starts to dry out. The tiles should be agitated again and the residue wiped away with a sponge or mop.  Finally, the tiles should be rinsed with clean water.  In extreme cases, neat solution can be used and the same method applied.  

To protect porcelain tiles from future tannin staining, we recommend barrier treatment, LTP Porcelain Tile Protector – a non-film forming solution that creates a barrier against moisture and organic matter and makes ongoing maintenance easier.  Being water-based, the protector can be applied over some residual moisture.  As a rule of thumb, it’s generally safe to apply over the autumn and winter provided that no rain is forecast for 24 hours, either side of application. 

For more advice on tile maintenance and protection, please visit http://www.ltp-online.co.uk, contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

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For media information and photography, please contact angie@afpr.co.uk

Cement-based grout is generally used to install mosaics and, in many cases, a pale or white tone is used.  Being a porous material, the grout absorbs moisture carrying particles of dirt and dries out slowly.  As a result, unprotected joints can quickly discolour and become stained.  Generally, in bathroom settings – where mosaics are most commonly used – the joint turns from white to a peachy orange shade.  This discolouration is caused by moisture which carries in it soap and body fats. In rooms that aren’t sufficiently ventilated, the discolouration can turn to mould.  Anti-bacterial cement-based grout will delay the formation of mould but it won’t stop the discolouration. This problem can be compounded when the tiles are cleaned, as dirt that is wiped from the face of the mosaic will then be drawn into grout.

How to protect a new grout joint from staining

To stop newly applied grout from discolouring, we recommend application of LTP Grout & Tile Protector.  The spray product is applied onto clean, newly grouted joints once they have cured for 20-30 minutes, holding the can 15-20 cm away from the surface of the mosaics and using a sweeping motion. Joints are touch dry within 5 minutes and a 2-3 hour window is recommended to allow the protector to fully dry. Any over spray onto the tile is invisible and it won’t alter the appearance of the tile.  The protector, meanwhile, creates a hydrophobic barrier, preventing moisture from carrying dirt into the grout and in the case of a natural stone mosaic (which should have been sealed) will offer additional protection.

How to remove staining from an existing grout joint

To remove staining from existing grout lines, we recommend LTP Mouldex.  Designed to tackle orange staining, mould formation and black staining caused by poor ventilation and ineffective cleaning, Mouldex has a bleaching action which cleans grout and helps prevent future staining.  It can also be used on silicone seals. A pump action product, Mouldex is sprayed onto stained areas 5-10cm from the surface.  After around 45 minutes, a little water is applied and the surface is agitated with a stiff brush to release the dirt and grime; an old toothbrush is ideal for mosaic grout joints. Tiles should then be rinsed, using a sponge and water.  

Stubborn stains and silicone will take longer; here, Mouldex can be applied and left overnight. To enhance the treatment, cling film can be applied over the treated area; this will help suspend the active over the joint and prevent it from drying out. Once the grout has been cleaned, LTP Grout & Tile Protector should then be applied.

Maintaining mosaic tiles

To maintain mosaics and to ensure that the protection isn’t compromised, always use a pH neutral cleaner. General household cleaners, which tend to be either acidic or alkaline in nature, aren’t suitable; they will, over time, etch a stone surface and damage any sealer applied.  Even many ‘eco’ cleaners are too harsh; whilst they contain natural acids and alkalines, they are not pH neutral. We recommend LTP Multipurpose Cleaner which is safe to use on all types of tile and stone surfaces. 

To find out more, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Establishing an outdoor regime

Path and patios will benefit from a thorough clean every couple of months or so – ideally, twice during the winter and three times during late spring/summer.  Surfaces that are regularly cleaned will be far easier to keep clean.  Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, will also help maintain a seamless aesthetic.  

Before embarking on a late summer clean-up, identify any furnishings or materials that aren’t winter or frost proof; these will need to be packed away or covered up before the weather turns. It’s worth emptying and stacking pots as soon as flowers are spent to make patio maintenance easier; some might need to be stored away if they’re not frost-resistant.  Pavers can then be swept to remove dirt, debris and fallen leaves.

It’s worth sweeping up leaves on a regular basis, as they can quickly decay and cause a slip hazard. Certain leaves, like sycamores, are a particular menace; aphids that live on the surface of the leaves excrete a sugary substance that provides a food source for algae.  The combined sugar and bacteria leaves a telltale black spot stain and sometimes whole leaf prints.    

A note about pressure washing:

A blast with a jet wash may seem like a quick and easy way to clean pavers but it will only wash dirt off the surface.  Over the autumn and winter, use of excessive amounts of water can exacerbate staining and slip issues.  Jet washing can also loosen grout, erode a stone surface and damage any protective sealant applied.  A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity, and will also help to prevent regrowth of algae and other organic material.

Cleaning pavers – recommended products & methods

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.   This treatment is also especially effective at removing leaf stains, including those left by Sycamore leaves. Before cleaning, remove furniture, pots and other objects.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your patio is prone to black spot, lichen, moss and algae, we recommend periodic treatment with LTP Blackspot & Algae Remover which will break down microspores and black spot ‘hyphae’ before they colonise.  Late summer is a good time to carry out the first treatment. LTP Blackspot & Algae Remover is acid-free, so it’s safe to use on acid-sensitive stone, but it does contain a bleaching action to remove stains.  So, as before, test first on an inconspicuous area.  Then, remove furniture and other items from the area to be treated.

How to apply LTP Blackspot & Algae Remover:

1. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
2. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
3. Hose off thoroughly with clean water.  

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during the freeze and thaw cycle of winter.

Adding in protection

If your patio hasn’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  They are also water-based, so can be applied over some residual moisture.  As a rule of thumb, it is safe to apply a treatment provided that no rain is forecast for 24 hours, either side of application. 

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush, as shown in the Video Aid.  It will protect pavers from moisture, stains, weathering and efflorescence, and it’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase grout working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Terracotta is a very wholesome, natural material.  It’s basically clay that’s dried in the sun or fired in an oven and the name literally means ‘baked earth’.  Along with its beautiful burnt orange colouring, terracotta provides a robust finish that’s versatile and easy to look after.  However, like many natural materials, it is porous and can easily become stained.  There are two ways of protecting terracotta tiles – either by applying a synthetic sealer or the more traditional method using Boiled Linseed Oil and wax.

The two ways to protect terracotta: 

Synthetic Sealers

Synthetic or acrylic sealers are the easier option in terms of application.  They’re generally faster to apply and they create a surface seal with a degree of sheen.  LTP options include Colour Intensifier & Stain Block – a non-film forming impregnating sealer that fills the pores of the tile.  This treatment can be used on its own, for a natural finish, but we recommend a follow-on application of LTP Ironwax, to make tiles easier to mop and keep clean. LTP Ironwax is a film forming sealer that creates a self-shine surface layer; it is applied with a sponge or paintbrush to textured tiles, or with a cloth or pad to honed tiles, and no buffing is required.  Three coats are generally sufficient – with an hour between each application – but a higher sheen can be created with additional coats, up to a maximum of six.

LTP Colour Intensifier is also applied with a sponge, pad, cloth or brush and left for 60 minutes between coats.  For a strong colour tone and for more absorbent material, further coats can be applied after 60 minutes.  All terracotta’s have different levels of porosity, so there is no specific recommendation regarding number of coats.  The best advice is to apply the sealer, as instructed, until the tile is fully saturated, ie., an even layer of sealer is still visible on the tile surface 30 minutes after application. The tile should be left to dry and then gently buffed to remove any excess, if any remains.

During the second stage of treatment, wax is applied. This provides a resilient protective layer against water, dust and dirt, as well as extra sheen.  LTP treatments include LTP Clear Wax – a natural, clear finish – and medium brown LTP Antique Wax which deepens the colour tone and, in many cases, instantly ages the appearance of the terracotta. Both treatments have a soft paste consistency. They are applied with a cloth and the surface is then buffed.  The traditional treatment method can also be used to restore older floors, once the tiles have been thoroughly cleaned and any existing sealant removed. 

https://youtu.be/FonA7VfIIh8

For ongoing cleaning and aftercare, we recommend LTP Waxwash – a gentle, pH neutral cleaner which contains a trace of Linseed Oil to reinforce protection.

For more advice on floor maintenance and protection, please contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit http://www.ltp-online.co.uk

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For further media information and photography, please contact:

Angela Fitzhugh PR Ltd at angie@afpr.co.uk or tel. +44 (0)1579 673026.

Encaustic tiles have become a timeless classic and deservedly so.  They bring pattern and colour in a huge array of design styles, from Moorish-inspired tiles to modern geometrics.  They also provide a really practical surface, being hardwearing and easy to keep clean.   But care does need to be taken when installing these tiles.  They’re vulnerable to staining, so it’s really important to seal them correctly – and sufficiently – both before and after grouting.

Why protection is really important

Traditional encaustics have a concrete base. Their colour and pattern come from pigments which are mixed and poured into a mould, on top of the concrete.  Because porosity can differ from one design to another, there’s no golden rule in terms of the amount of sealant that should be used. Therefore, to ensure adequate protection, coats of sealer should be applied to the tile with one hour between each application to the point of saturation. This will occur when a layer of sealer is still visible on the surface of the tile 20 minutes after application.  To remove excess sealer, you can either work the treatment off with a microfibre cloth or leave it to dry naturally.

Note. Always ensure that tiles are clean and dust-free before you apply any sealer.  This will prevent any residue from becoming trapped between the tile and the treatment, which could compromise the performance of the sealer.

Different sealer options

There are two LTP sealer options for encaustic tiles:

LTP Colour Intensifier which increases colour vibrancy, without detracting from the tile’s naturally muted appearance.  Or, for a completely natural look, LTP Mattstone.  Both treatments are offered in a water-based or spirit-based formulation.

The sealer should be applied both before and after grouting.  Post installation only, wax can be applied as an alternative to the sealer to create a traditional antique finish which can easily be topped up.  We recommend LTP Ironwax Satin or, for a more shiny appearance, Ironwax Gloss.  

For directions on sealer application, please see our Encaustic Guide.

Common stains and how to remove them

Staining from detergent or acid-spill:

Encaustic tiles are sensitive to acid.  When acid comes into contact with the patterned surface, it can bleach out darker colours on untreated tiles.  Common culprits are acid-based cleaners and acidic liquids like lemon juice, vinegar and wine.  To remove staining, we recommend application of LTP Cement, Grout & Salt Residue Remover onto the individual tile, up to the joint only.  This will slightly etch the surface and even out the appearance.  The tile should then be re-treated.  Method and treatment time will vary, depending on severity of staining, as outlined in our Technical Datasheet. 

Hard-water staining:

Constant exposure to hard water can cause an encaustic tile to effloresce.  Here, we recommend cleaning with LTP Grout Haze and Limescale Remover. Apply liberally to the surface, work in with an emulsifying pad, rinse and then top up the protection. 

Dirt & Grime:

To deep clean encaustic tiles, we recommend LTP Grimex.  Here, the dilution and application method can be adjusted depending on the degree of residue build-up.  Generally, a 1:10 dilution is sufficient.  The cleaner is applied to the tiles and left for 5-10 minutes, before a little water is added and the surface and joints agitated with a black pad.  Residue is then removed with a sponge and the surface rinsed and sponged again.  Please see our Technical Datasheet for more information.

 

Over-applied sealer:

If too much sealer is applied to a tile, and not removed, it can cause shiny patches.  Care should be taken when tackling this problem and abrasive cleaners and strong alkalines avoided, as they commonly cause pigments to ‘bleed out’.  Instead, use a non-caustic solution like LTP Solvex.  Apply to the whole tile, leave for 15 minutes and then agitate with a white emulsifying pad before removing residue and rinsing. 

Ongoing maintenance:

To clean encaustic tiles going forwards, always use a pH neutral cleaner.  General household cleaners, which tend to be either acidic or alkaline in nature, aren’t suitable; they will, over time, etch the surface and damage any sealer applied.  Even many ‘eco’ cleaners are too harsh; whilst they contain natural acids and alkalines, they are not pH neutral.  We recommend either LTP Floorshine if the tiles have been finished with wax or LTP Waxwash if an impregnator has been applied.  Floorshine is a particularly good option, as it will clean the tile and also top up protection. 

For more detailed advice on encaustic tile maintenance and protection, see our Guides.  Bespoke guides can also be written on request. 

For further information and demos, browse LTP TV on YouTube or contact the LTP team direct on tel. 01823 666213 or email info@ltp-online.co.uk

The advantages of using the right tool are far reaching:

•      You’ll use less cleaner, sealer or protector to do the job and application will be faster and easier, saving time and money.
•      A well applied product will perform better; in the case of a cleaner, this may reduce the frequency of cleaning required and prevent a build-up of residue which makes maintenance more difficult and can create a slip hazard.  Similarly, a well applied sealer will  offer greater protection, which will result in the same benefits.  In turn, the need for costly surface renovation will be removed.
•      Good tools will be more ergonomically suited to the job, reducing the risk of injury, sprains and pulled muscles. 

Picking up on the last point above, use of a ‘4 piece pole’ to seal natural stone and tiles deserves a special mention. Tilers spend an incredible amount of time on their knees and, as a result, knee joint problems are very common.  This is especially prevalent amongst tilers that fix a lot of natural stone, where the sealing process can take several applications. Using a sealer applicator on a pole is not only better for your knees, it is also a more efficient and a quicker way of applying the protection.

The table below illustrates general household cleaning tools and the professional tools and cleaning pads from the LTP range:

In each case, the professional LTP tool gives faster, more effective results and eliminates the disadvantages associated with using the incorrect tool.  To find out more about LTP’s tools and cleaning pads, please visit https://www.ltp-online.co.uk/cat/tools-and-cleaning-pads

LTP’s history dates back to the creation of Wellington Tile; a company founded by Anthony Robb to import terracotta from Portugal. Recognising the need for an ageing liquid to give terracotta an antique finish, Anthony mixed up a secret brew in his cement mixer, bottled it in one litre jerry cans and branded it LTP OLDTONE OIL.  Why ‘LTP’?  Because the terracotta was sold as Lionheart Terracotta, so the sealer – and subsequent treatments – became known as Lionheart Terracotta Products, or LTP for short.   A few weeks later, the cement mixer was in action again, this time concocting a clear finish sealer called LTP CLEARTONE.

Today, production has moved to a specialist chemical packing company based in South West England – and the range now includes over 32 products formulated to seal, clean and maintain every type of natural and engineered tile and stone. In 2016, LTP also launched its ECOPROTEC® brand – a range of products specially developed for the contract sector. 

On the ground, the five strong sales team, which is forecast to grow, is headed by Emma Lock.  Director, Mark Atkins – the first person responsible for LTP sales – now concentrates on research and development, marketing, export and expansion into other markets including white labelling and ‘own branding’ its formulas for other businesses.

“Over the past 40 years, the LTP range has been developed based on our first-hand experience of the tile trade and issues experienced by installers.  And, despite our rapid expansion, close ties with our customers are key; we remain a business that’s committed to offering a good after sales service and to developing products that customers need, rather than chemicals that we want to sell,” commented Richard Osborne, LTP’s Managing Director.

In terms of formulations, LTP water-based products are gaining considerable traction. Extensive research and development into water-based formulations, coupled with increasing withdrawals of solvent based raw materials, has created a new breed of high-quality products that are equal to or superior to their spirit-based equivalents. LTP now offers a water-based equivalent alongside all its traditional sealers, with sales continuing to grow year-on-year.

“It’s taken some time but we’re now seeing an inexorable march away from spirit-based sealers,” explained Mark Atkins.  “Our own goal, over the next five years, is for 75% of our production to be of water-based, non-hydrocarbon formulations.  The tile and stone industry still needs encouragement to support this strategy but the environmental benefits are irrefutable.” 

Alongside the switch to water-based formulations, other LTP environmental initiatives include the development of new PFA-free stone and tile sealers (free from microplastics), a reduction in waste disposal throughout its production and reusing of pallets; the sourcing of cardboard packaging from FSC accredited suppliers and the use of recyclable bottles made from recycled materials.

“What does the next decade hold beyond product development?  We’re dedicated to bringing along the next generation of LTP, through our apprenticeship scheme and recruitment.  We’ll also be growing our export network and manufacturing partnerships.  It’s been a fabulous journey to date and the future ahead, despite current economic challenges, looks very bright indeed,” Richard concluded.

To find out more about LTP, please visit http://www.ltp-online.co.uk, call 01823 666213 or email info@ltp-online.co.uk

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For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01579) 673026 or email angie@afpr.co.uk

Constructed in around 70AD in the city of Bath, the Roman Baths is one of the best-preserved Roman remains in the world.  It was built as a grand bathing ‘thermae’ and socialising complex and 1,170,000 litres of steaming spring water, reaching 46°C, still fills the bathing site every single day.  Works to restore flooring were carried out over night by Green Man’s team of six technicians, with the majority of the works completed in a single night.

The decorative marble flooring, laid throughout various corridors within the upper Roman Baths’ complex, comprised several different types of white, black and brown stone. Tiles were coated with an aging topical seal previously applied to create a durable, reflective surface. Scratched and dulled over time, the finish and marble tiles were surveyed by Green Man and LTP Solvex – a high performance, non-caustic stripper – was specified to remove the seal. A weighted rotary machine was then used to remove the softened coating and residue was lifted using commercial wet vacs.  Tiles were then cleaned with LTP Grimex deep cleaner.

Once the marble floor was dry, six coats of LTP Ironwax Gloss were applied over a series of nights; the self-shine acrylic sealer enhances colour and texture, protects against staining and stubborn dirt and promotes easy maintenance.

“This is likely to be the most walked upon floor we ever treat, so it was imperative to get the finish right.  LTP Solvex and Ironwax Gloss provided the perfect combination, safely restoring and renewing the precious marble’s lustre and protection,” explained Green Man’s Jon Gardner.

Ongoing maintenance will now include interim mopping using LTP Floorshine, which helps to reinforce protection on surfaces sealed with LTP Ironwax Gloss.

For more information about the project and specification, please contact the LTP team on tel. 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk.  To find out more about the Green Man project, please link here or visit https://greenmancleaning.co.uk

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For further media information and photography, please contact Angela Fitzhugh-Scott at angie@afpr.co.uk

Graffiti and paint stains can be difficult to remove from stone.  This is because it tends to be porous, so it readily absorbs the paint.  Stone is also often acid-sensitive, so harsh chemicals which could erode the surface must be avoided; these include solutions that are high in alkalinity or acidity.  Other removal methods, like sand-blasting, should also be avoided as abrasive techniques can cause additional damage to the underlying surface.  

To safely remove graffiti, we recommend LTP Solvex.  It’s a powerful treatment but it’s non-caustic, so won’t damage the stone surface.  It can be used on all types of natural stone, including travertine, terracotta, slate and sandstone, as well as glazed ceramic and porcelain tiles. 

How to apply LTP Solvex

• To apply Solvex, pour the liquid into a separate container and apply generously with a brush or by dabbing with a cloth.  Work in manageable areas of no more than five square metres and don’t brush out; keep the application generous.
• Leave the solution for up to 30 minutes, but don’t allow it to dry out. If the surface starts to dry within this timeframe, apply a little more treatment.  After 30 minutes, use a stiff brush or an abrasive pad to remove the softened paint and repeat the process if any unwanted material remains.
• Finally, wash down the surface with a dilute solution of LTP Grimex cleaner, rinse with plenty of water and leave to dry.  We generally recommend sealing the stone or tiles with a suitable treatment after 24 hours, to protect the surface from future damage.

https://youtu.be/mSIJfETHf18

Other ways LTP Solvex can help

In addition to removing graffiti and paint, LTP Solvex also removes stubborn wax, silicone, acrylic, polyurethane sealers and epoxy grout, softening the residue in each case so that it can easily be removed. 

Prevention

After cleaning stone to remove graffiti, we’d normally advise the application of protection to help prevent paint and other ink-based solutions from absorbing. This will make any future clean up much easier. For this, we would recommend an application of LTP External Stone Sealer externally and, for interior applications, LTP Mattstone or Mattstone H20.

For more advice and demos, browse LTP TV on YouTube or contact the LTP team direct on tel. 01823 666213 or email info@ltp-online.co.uk

There was a similar incident at the Chelsea Flower Show last year.  The same protestors threw paint at one of the exhibit gardens.  Unlike Stonehenge, this caused considerable damage.  We were called on to rectify the problem and the solution came in the form of our LTP Solvex intensive cleaner.

Solvex is a powerful, non-caustic cleaner that’s designed to remove paint, wax and silicone, as well as acrylic and polyurethane sealers and residual epoxy grout.  Unlike an aggressive chemical which can erode natural stone, Solvex can be used safely on all types of natural stone, including sandstone, travertine, terracotta, slate and quarry tiles.  It can also be used on glazed ceramic and porcelain.

To apply Solvex, pour the liquid into a glass or metal container and apply generously – wearing protective gloves – with a brush or by dabbing with a cloth.  Work in manageable areas of no more than five square metres and don’t brush out; keep the application generous. Leave the solution for up to 30 minutes, but don’t allow it to dry out. If the surface starts to dry within this timeframe, apply a little more treatment.  

This video shows application of LTP Solvex to remove graffiti.

https://youtu.be/mSIJfETHf18

After 30 minutes, use a stiff brush or an abrasive pad to remove the softened coating and repeat the process if any unwanted material remains. Finally, wash down the surface with a dilute solution of LTP Grimex, rinse with plenty of water and leave to dry.  We generally recommend sealing the stone or tiles with a suitable treatment after 24 hours, to protect the surface from future damage. 

For more advice and demos, browse LTP TV on YouTube or contact the LTP team direct on tel. 01823 666213 or email info@ltp-online.co.uk

Surface rust stains

Most rust stains are caused by metal objects. Outdoors, common culprits include rusting BBQs, metal umbrella stands, pots and garden tools.  Tiny deposits of iron wash off the surface of the objects when they come into contact with moisture and these deposits then leave a rust stain. They’re generally easy to identify because the stain often mirrors the exact shape of the rusting metal object that was sitting on the surface.

In addition, some weed killers and lawn fertilisers can create rust stains, caused by ferric sulphate iron particles within them.  These stains appear as little spots of rust.

Naturally-occurring rust stains

Rust or orange-coloured discolouration can appear naturally within hard ferrous-type stone pavers; this is especially common in sandstone. These stones naturally contain iron which can oxidise or rust when it comes into contact with rain. Stains often appear after laying and are easy to identify because the appearance is normally a gradual phasing in that results in a bloom of orange colour across the surface of the stone.

The stain removal solutions

Jet washing, scrubbing with soapy water and treatment with harsh chemicals like brick acid won’t remove these stains – but the right chemical will.

Surface rust stains:

For these stains, we recommend LTP Rust Stain Remover– a non-caustic solution that’s safe to use on all types of polished and unpolished natural and artificial stone tiles, including marble, granite, travertine, split face stone cladding, sandstone, concrete, terracotta, ceramic and porcelain. 

How to apply LTP Rust Stain Remover:

1. Ensure that the surface to be treated is completely free from dust and dirt before application. If necessary, wash with LTP Grimex diluted 1:10 with water. 
2. SHAKE WELL BEFORE USE. Do not dilute. Completely cover the rust stain with the product. Leave to act for 15 minutes. The product colour will change to a deep purple as it reacts with the rust. Once the indicated time has elapsed, remove the residue and rinse the surface thoroughly with plenty of water and leave to dry. Repeat application until the stain is completely removed. 

https://youtu.be/eVhMbYk3wfU

Naturally-occurring rust stains:

For these stains, we recommend LTP Ferrex – an acid-based cleaner but the right kind of acid for harder stones! Ferrex is designed for hard ferrous stones including sandstone, granite and slate. However, it isn’t suitable for use on acid sensitive surfaces, like limestone, marble or pavers with a highly polished finish. 

How to apply LTP Ferrex:

1. After testing on a small area, apply the solution to the surface and spread out evenly. For external applications, garden sprayers can be used.
2. For severe staining, surfaces should be agitated using a short haired scrubbing brush or black emulsifying pad. 
3. After 3 – 6 hours, rinse with plenty of clean water. If traces remain after a couple of days, repeat the process. 
4. After treatment, we recommend that the surface is protected from water with an impregnating sealer like LTP External Stone Sealer or LTP Mattstone H20.  This will greatly reduce the risk of rust discolouration returning. 

https://youtu.be/N0HyeMZ1PM8

Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside. 

For more advice and demos, browse LTP TV on YouTube or contact the LTP team direct on tel. 01823 666213 or email info@ltp-online.co.uk

When a restorative treatment like LTP Blackstone Sealer & Restorer is applied to black stone, it mixes with any loose particles of limestone. These particles are caused by etching which occurs when the stone comes into contact with acidic rain. The etching creates a sediment which is carried into newly exposed capillaries and the sealer, in turn, draws the sediment out of open pores. When this residue mixes with the sealer, it creates a smeared and patchy appearance.

To avoid this happening, the surface should be thoroughly cleaned to remove the sediment and condition the stone. If you rub your hand across the surface before cleaning, you’ll see a dusty residue; that’s the limestone sediment.  Cleaning the surface opens the pores and prepares the stone for application of the sealer.  Here is a link, which includes full preparation directions for new and older surfaces.

LTP Grimex is ideal for preparing new surfaces before application of Blackstone. For older surfaces, we recommend LTP Black Spot & Algae Remover to remove blackspot, algae, mildew and stains.

Don’t be tempted to over-apply LTP Blackstone in order to achieve a darker finish or speed the process up.  Less is more. It’s far better to apply several thin layers than one thick layer.  If you apply too much product in one go it won’t be absorbed properly and the finish will be patchy.  Here is a link to application directions.

Any residue treatment should be removed with LTP Power Stripper, using a diluted 1:10 solution as explained in the instructions.  This is an important part of the process because the treatment only works in the pores of the stone, where the formulation cross links to make the sealer colourfast.  This final clean won’t return the stone to its original colour, it will just remove any excess treatment that hasn’t been absorbed and is effectively just sitting on the surface. 

For more information about black stone and the application of LTP Blackstone Sealer & Restorer, see our blog Black Stone issues – Series One: How to restore colour to black stone.  The Blackstone product page also includes additional information, including a video aid and coverage calculator.

To watch video demos, visit LTP TV.

For more information and expert advice on surface protection and maintenance, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

ends  –

For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01579) 673026 or email angie@afpr.co.uk

Why does black stone fade?

A dark stone’s appearance can be greatly affected by UV light and normal rainfall because it causes a chemical reaction.  Limestone and many other dark stones are calcium-based, alkaline in nature and sensitive to acid.  They contain a soluble mineral called pyrite; when this is combined with water and oxygen, it forms sulphuric acid, which dissolves the calcium and changes the colour of the stone.  Meanwhile, as rain falls, it absorbs carbon dioxide from the air, which dissolves to form carbonic acid.  This makes it slightly acidic – around 5.6 on the pH scale, rather than a neutral value of pH 7.  Rainwater, humidity and UV-rays all contribute to discolouration, as does erosion caused by the wind and general wear and tear.  Acidic maintenance chemicals can also cause additional damage, as can jet washing.

How to protect new slabs – and restore an existing patio

Good quality water-resistant sealers go a long way in reducing discolouration – and many can enhance colour too - but rainfall also damages the protection that they create.  Topical sealers can be worn away and rainwater that seeps into the stone’s porosity will eventually compromise the effectiveness of an impregnator.

LTP Blackstone Sealer & Restorer provides a long-term solution, by protecting the surface and creating a permanent colour enhancement.  The treatment is a water-based, impregnating sealer which contains a permanent colour intensifying pigment. It can be used on limestone, marble, slate and concrete pavers.  To maintain a very dark, pristine finish, annual treatment is recommended, although a treated stone will maintain a far darker aesthetic than an untreated stone for around 4-5 year. 

Choosing a water-based treatment, like Blackstone Sealer & Restorer, provides safety and environmental benefits.  It can also be applied in damp conditions, so application is much easier and can be carried out at any time of the year, provided that no rain is forecast for 24 hours, either side of application. 

How to apply LTP Blackstone Sealer & Restorer

Stage I – Preparation:

Ensure that the surface to be treated is completely clean, dry and free from dirt, grime, cement, and grout. If necessary, wash the surface first with a dilute solution of LTP Grimex 1:5 and scrub with a white nylon pad. Rinse well to remove residues and leave to dry.

For older surfaces, remove blackspot, algae, mildew and stains from detritus with LTP Blackspot & Algae Remover. Apply undiluted and leave for up five hours. Rinse and leave to dry.

Stage 2 – Treatment:

Wear gloves and ensure that any surfaces not to be treated are covered and protected. 

IMPORTANT: Blackstone is a permanent staining solution that will darken the surface of the stone and the grout joints; it will be very difficult to remove once applied. Blackstone is an impregnating sealer that needs to fully absorb into the stone. It is not film forming, so any excess left on the surface should be removed. Always test on a small area before general application, to help establish best method and optimum number of coats required. Do not walk on treated surfaces until the solution has completely dried. NB. Do not use when surfaces are very cold or very hot. Ideally between 5 - 25°C.

Shake the bottle well before use. 

Work in small, manageable areas, i.e, as far as you can reach without stepping into the solution. Apply a small amount to the surface and spread out evenly using a sealant applicator, foam roller or paint brush.

Allow the solution to penetrate the stone. If a second coat is required, apply immediately after the first has absorbed. Do not allow the first coat to fully dry before application.

NB. Do not walk on the surface for at least four hours after the final application. Once dry, and to help ensure an even application, it may be necessary to work off any visible excess using a dry towel.

Allow newly treated surfaces 24 hours to cure. If necessary, wash surfaces with a 1:10 dilute solution of LTP Powerstripper. This will help to remove any excess that is difficult to rub off. Before allowing traffic, gently rub the surface in a few areas with white cloth or paper towel to make sure that it is colourfast.

The Blackstone product page includes additional information, including a video aid and coverage calculator.

For more information and expert advice on surface protection and maintenance, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

LTP Solvex is an intensive cleaner or stripper.   A non-caustic formulation, it removes stubborn residue – including congealed fat and wax - by softening deposits so that they can be easily removed from the surface without causing any damage. It can be used on all natural and engineered stone, including sandstone, slate, travertine, terracotta, quarry tiles and porcelain.  LTP Grimex is the ideal partner to Solvex and is used to wash down the surface after treatment, before a final rinse.  

It’s really easy to apply both treatments.  LTP Solvex is poured neat, directly onto stains.  It should be generously dapped onto problem areas with a cloth or brush; always protect hands with suitable gloves.  The solution is then worked in manageable areas – as far as you can reach without treading into the cleaner.  The solution is left to work for up to 30 minutes; during this time, more should be applied if it starts to dry out.  Using a coarse, stiff brush or LTP’s Black Emulsifying Pad, the softened residue is then removed from the surface.  The process should be repeated if any staining remains. 

To wash down the pavers after treatment, LTP Grimex is diluted 1:3 with water and applied with a cloth, mop or brush.  The surface should then be rinsed with plenty of water and left to dry. 

If you’re removing residue from a previously sealed surface – or want to seal an untreated patio to protect it from future stains - a new coat of sealer can be reapplied after cleaning and once the surface is sufficiently dry; this may take a minimum of 24 hours.  We recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot. 

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

As a general rule of thumb, it’s only polished porcelain tiles that need to be sealed and these aren’t recommended for outdoor installation as they don’t provide any grip underfoot.  Porcelain pavers generally have a matt finish and a textured surface; outdoors, wood and stone-effect tiles are the most popular options. However, whilst matt porcelain doesn’t need to be sealed, it will benefit greatly from application of a ‘barrier’ treatment.  Tiles that have a textured surface can very easily become stained by grout and installation residues which become trapped in the tile’s high/low surfaces; it’s a particular issue in external applications, where brush-in jointing compounds are often used.  Once congested, the texture of the tile is lost along with the tile’s slip resistance. Ongoing maintenance will also be more difficult.

The benefits of a barrier treatment

A quality, pre-grout water-based barrier, like LTP Porcelain Tile Protector, applied before grouting, will help protect tiles from staining and will make the removal of residues easier.  It will also make installation easier, as it will improve/increase grouting working times – and a final coat after installation will make ongoing maintenance easier.

How to apply LTP Porcelain Tile Protector

https://youtu.be/t7d974aBMcQ

• Ensure that the surface to be treated is completely clean, dry and free from dirt, grime, cement and grout. If necessary, clean the tiles with a dilute solution of LTP Grimex 1:5, using a white pad. Rinse well to remove residues and let the tiles dry.

• Shake the bottle before use. Before grouting, apply evenly to the tile surface using a broad paint brush, foam roller or light pressure sprayer. Allow to dry for 30 minutes. 

• Apply a second coat. Leave to cure for a minimum of one hour before grouting or pointing. 

• Once grout/pointing is dry, and all residues have been removed, a further coat of protector can be applied covering the tile and joints.

For more advice on stone and tile protection and maintenance, contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit http://www.ltp-online.co.uk

In periods of wet weather, paths and paving slabs can very quickly become slippery and potentially dangerous.  This can also be a problem year-round in areas that tend to be damp and get very little sunlight. Moist conditions cause slippery residue and algae to build up – and trying to solve the issue with more water can exacerbate the problem.  However, a thorough clean using the correct treatment will restore surface appearance, grip underfoot and help to reduce future build-up. 

This issue isn’t limited to any particular hard landscaped surface; it’s common on most, including natural stone pavers, porcelain pavers, concrete pavers, block paving, wood decking and composite decking.

Different types of algae

Algae comes in different forms and often creates a film or powdery deposit on pavers.  The term algae also includes cushion-like moss; Liverwort, which is a flat green growth with tiny leaf-like lobes, and Lichen, which is more crust-like and can also be yellow or orange. Jelly-like growths are also common; they’re often black or dark green and these are caused by a cyanobacteria called Nostoc.  None of these growths are hazardous – infact, lichen is particularly common in areas with clean air, so its appearance can be a positive sign – but slippery hard surfaces can be.

Another common problem is black spot – a speckle-like deposit that can be black or white.  Black spot is a dust-like lichen that originates from plants and trees. It colonises on pavers, sending tendrils or ‘hyphae’ down into any cracks or porosity, searching for nutrients. It takes about 2-3 years to become established below the surface and it creates a slippery residue on the surface of pavers. 

Addressing problem areas

Why water doesn’t work

A pressure washer and often a dose of household cleaner is a common go-to solution for slippery pavers.  However, excessive water only makes conditions even better for algae to flourish and pressure washing can damage the surface of the pavers, any sealer applied and it will loosen grout.  Water also won’t target hyphae or filaments anchored into place below the surface.   A specialist approach is necessary to effectively remove residue and microspores below the surface; any treatment used needs to break-down the slippery residue, to have a bleaching action to restore the colour of the paver and to target any growth below the surface. 

Care should be taken in selecting a suitable treatment.  If a solution is acidic, it will damage acid sensitive material and erode the grout joint.  We recommend LTP Black Spot & Algae Remover which can be safely used on all types of natural stone, concrete, brick and porcelain.  This treatment removes all types of organic residue, slippery matter and stains, breaking down hyphae below the surface, as well as preventing regrowth.  When applying the Remover, it’s also important to treat the whole area of paving, for a uniform appearance.   

Before treatment with LTP Black Spot & Algae Remover. Kindly supplied by Tom Barnard, Floor Restorer.

After treatment with LTP Black Spot & Algae Remover. Kindly supplied by Tom Barnard, Floor Restorer.

How to use LTP Black Spot & Algae Remover

Before washing pavers, any large, mossy deposits should be removed.  A long-handled block paving brush is a useful tool.  The whole area should then be swept clean to remove other residue, dirt and leaves.  

LTP Black Spot & Algae Remover should be applied neat to swept pavers, using a watering can or light pressure garden spray, where it fizzes during treatment.  It should be left to act for 2-4 hours and surfaces then hosed with clean water.  The solution can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.  See a video aid on the product page.  Also, see LTP’s range of tools, including deck brushes and grout brushes.

LTP Black Spot & Algae Remover should be applied neat to swept pavers, using a watering can or light pressure garden spray, where it fizzes during treatment.  It should be left to act for 2-4 hours and surfaces then hosed with clean water.  The solution can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.  See a video aid on the product page.  Also, see LTP’s range of tools, including deck brushes and grout brushes.

If, like us, you’ve seen lots of articles on deep cleaning, you may be tempted to try out some of the popular ‘cleaning hacks’.  Many people are recommending mixtures of vinegar, soda crystals, bicarbonate of soda, water and lemon to make disinfectants, all-purpose cleaners and limescale removers.  The problem is that lots of natural materials, like limestone and marble, are very sensitive to acid and alkaline.  Vinegar and lemon are both very acidic - and soda has high alkaline levels.  Both can erode or ‘eat away’ natural surfaces like stone floors, tiles, countertops and mosaics - and damage any protective sealer that’s been applied.  These surfaces should always be cleaned with a gentle pH-neutral product.

It’s useful to think about the pH scale before choosing – or making – a cleaning product. Running from 0-14, anything that scores a 7 is considered neutral and safe to use on all surfaces. Anything below a 7 is considered acidic and anything above a 7 is considered alkaline.  Acidic solutions are best at removing calcium, rust and other mineral ‘non-organic’ stains. Lemon and vinegar score around 3 on the pH-scale and toilet bowl cleaner is the most acidic, with a pH of 1-3. At the alkaline end of the scale, you’ll find bleach and many tile cleaners; they have a high pH value of 11-13 and are best at removing ‘organic’ dirt, grease and oil.  

Surprisingly, many ‘toxic-free’ products can also cause damage to natural surfaces. Look closely at the label on a leading anti-bacterial all-purpose cleaner and it states that it isn’t suitable for natural stone because it is acid-based.  It’s always worth reading the small print.  

Another common misconception is that an extra dose of the right product will do an even better job.  But this can actually create problems. Using a lower dilution may mean that a surface needs to be rinsed; if it isn’t, the residue may form a film on the surface, which could make future cleaning more difficult.  

LTP’s range includes lots of different products for tackling specific jobs – and removing stains – as well as pH-neutral cleaners that are safe and all purpose.  LTP Stonewash is a great all-rounder, if you’re looking for a combined bathroom and kitchen cleaner for all types of tile and stone.   The LTP website also includes various Video Aids and others resources to help you Identify your surface and calculate how much product you need.

To see the whole range, find our more and stock up with the right product, visit https://www.ltp-online.co.uk, or contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

How to protect a new porcelain installation

If you’re installing new matt porcelain outdoors and using a resin grout, staining can be avoided by using a barrier treatment to protect the tile. We recommend LTP Porcelain Tile Protector, which provides a number of benefits: It prevents grout and resins from taking hold; it makes the removal of any residues much easier and it improves and increases grout working times. A further coat applied after installation will make ongoing maintenance easier too.

How do I apply LTP Porcelain Tile Protector (youtube.com)

What is the difference between a sealer and a barrier?

Much confusion still exists in terms of porcelain barrier treatments and how they differ from sealers. The formulation of our own Porcelain Tile Protector is very different to that of our sealers, which have smaller ‘actives’ and, in the case of MPG Sealer, contain nano waxes. Also, the carrier within our Protector is mildly acidic. This allows for deeper penetration into the fissures of textured porcelain tiles, where it then dries and leaves the active ingredients behind. As they dry, they cross link within the low points of the glaze. This provides protection against penetration from cement and resin-based grouts, making the removal of any residues much easier. The Protector is completely invisible once cured, so it doesn’t alter the appearance of the porcelain. Whilst the treatment is primarily used as a pre-grout solution, it can also be applied to existing pavers – once they have been thoroughly cleaned – to make ongoing cleaning easier.

Before the Protector is applied, the tiles should be cleaned and left to dry overnight. The treatment is then applied with a broad paint brush or light pressure sprayer and left to dry for 30 minutes before applying a second coat. The treatment should be left to cure for a minimum of one hour before grouting. Once the grout is dry, and all residues have been removed, a further coat of Protector can be applied to the tiles and the grout joint.

How to remove resin stains from existing installations

To remove epoxy resin grout residue and white haze from existing installations, without damaging the joint or the paver, we recommend LTP Solvex – a non-caustic intensive cleaner/stripper. Solvex helps to soften the resin residues, allowing for easier removal from the textured porcelain. Application is normally followed by a final wash with LTP Grimex cleaning solution before rinsing down. As well as tackling brush-in resin grout, LTP Solvex can be used to remove wax, oil, silicone, acrylic and polyurethane sealer from porcelain.

A good ongoing maintenance regime

As with indoor tiles, porcelain paths and patios will benefit from a periodic clean. Keeping the surface relatively clean will prevent a build-up of dirt in the textured surface, making ongoing maintenance easier and retaining the tile’s slip resistance. As a general rule of thumb, it’s worth cleaning paving every couple of months or so – ideally, three times during late spring/summer and twice during the winter. Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, will also help maintain a seamless aesthetic. Jet washing may seem like the best method for a fast clean but it will only wash dirt off the surface of the slabs. High pressure water will also damage grout joints. A specialist treatment, like LTP Grimex, will react with the dirt and organic matter, and will help break it down. Meanwhile, a build-up of algae can be treated with LTP Blackspot & Algae Remover – a treatment that’s designed to break down microspores and black spot ‘hyphae’ before they colonise and help prevent future staining.

Patio Black spot removal in 2 minutes (youtube.com)

To find out more about protection and maintenance, please visit https://www.ltp-online.co.uk or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk. Also, for online help on-the-go, visit LTP TV on YouTube and Product Selector at https://ltp-productguide.co.uk

Different types of algae

Algae comes in different forms and often causes a green film or powdery deposit on pavers.  The term algae also includes cushion-like moss; Liverwort, which is a flat green growth with tiny leaf-like lobes, and Lichen, which is more crust-like and can also be yellow or orange. Jelly-like growths are also common; they’re often black or dark green and these are caused by a cyanobacteria called Nostoc.  None of these growths are hazardous - infact, lichen is particularly common in areas with clean air, so its appearance can be a positive sign – but slippery hard surfaces can be.

Another common problem is black spot – a speckle-like deposit that can be black or white.  Black spot is a dust-like lichen that originates from plants and trees. It colonises on pavers, sending tendrils or ‘hyphae’ down into any cracks or porosity, searching for nutrients. It takes about 2-3 years to become established below the surface and it creates a slippery residue on the surface of pavers. 

Addressing problem areas

Why water doesn’t work

A pressure washer and often a dose of household cleaner is a common go-to solution for slippery pavers.  However, excessive water only makes conditions even better for algae to flourish and pressure washing can damage the surface of the pavers, any sealer applied and it will loosen grout.  Water also won’t target hyphae or filaments anchored into place below the surface.   A specialist approach is necessary to effectively remove residue and microspores below the surface; any treatment used needs to break-down the slippery residue: to have a bleaching action to restore the colour of the paver, and to target any growth below the surface. 

Care should be taken in selecting a suitable treatment.  If a solution is acidic, it will damage acid sensitive material and erode the grout joint.  We recommend LTP Black Spot & Algae Remover which can be safely used on all types of natural stone, concrete, brick and porcelain.  This treatment removes all types of organic residue, slippery matter and stains, breaking down hyphae below the surface, as well as preventing regrowth.  When applying the Remover, it’s also important to treat the whole area of paving, for a uniform appearance.

Removing large deposits and applying LTP Black Spot & Algae Remover

Before washing pavers, any large, mossy deposits should be removed.  A long-handled block paving brush is a useful tool.  The whole area should then be swept clean to remove other residue, dirt and leaves.  

LTP Black Spot & Algae Remover should be applied neat to swept pavers, using a watering can or light pressure garden spray, where it fizzes during treatment.  It should be left to act for 2-4 hours and surfaces then hosed with clean water.  The solution can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.  See a video aid on the product page.

After treatment, it’s worth protecting the surface; we recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector, for matt porcelain pavers.  Both will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae.

For more support and advice, browse the LTP blog, visit and subscribe to LTP TV on YouTube or contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

The difference in these two treatments comes down to the active ingredients.  Those used in LTP Porcelain Tile Protector are very different from those in LTP MPG Sealer H20.

LTP Porcelain Tile Protector is a barrier treatment, rather than a sealant. It's designed for use on textured, matt porcelain tiles. The carrier within the Protector is mildly acidic. This allows for deeper penetration into the fissures of textured porcelain tiles, where it then dries and leaves the active ingredients behind. As they dry, they cross link within the low points of the glaze. This provides protection against penetration from cement and resin-based grouts, making the removal of any residues much easier. The Protector is completely invisible once cured, so it doesn’t alter the appearance of the porcelain. This treatment is primarily used as a pre-grout solution, but it can also be applied to help assist with ongoing cleaning and aftercare, especially on external 22mm porcelain paving.

LTP MPG Sealer H20 is a completely different formula.  It is only suitable for use on mechanically polished tiles, so tiles that have been polished using a mechanical process in order to make them very shiny. These include marble, porcelain, polished glazed porcelain and granite.  

The action of polishing porcelain exposes capillaries, whilst polishing natural stone closes the capillaries.  However, both remain porous and exposed. The result, in each case, is lots of microscopic pin holes that are very similar in size. If the surface of the tile isn’t protected, grout and spillages will penetrate quite easily and stain the tile. MPG Sealer H2O has similar anti-stain base ingredients as Mattstone H20 but in addition it includes a blend of nano waxes that following application and drying are polished into the surface either mechanically or by hand. This is a key part of the application process.  Polishing forces the nano wax into the open pores within the polished surface, giving it an enhanced smoother finish.

In contrast, the actives in Porcelain Tile Protector are too large and will not penetrate a polished surface as efficiently, so they will not work well on this type of surface.  Equally, MPG Sealer H2O cannot be used on textured porcelain surfaces, as it is difficult to buff following application. This can result in a micro film that remains following application and turns white/opaque when exposed to moisture.

For more advice, visit https://www.ltp-online.co.uk.  To contact LTP for more expert advice, tel. 01823 666213 or email info@ltp-online.co.uk

End of winter clean

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.  A blast with a jet wash may seem like a quick and easy way to clean pavers but it will only wash dirt off the surface. Use of excessive amounts of water can exacerbate staining and slip issues and jet washing can also loosen grout, erode a stone surface and damage any protective sealant applied. A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity, and will also help to prevent regrowth of algae and other organic material.

Before cleaning, remove furniture, pots and other objects, and sweep the pavers to remove all leaves and residue.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your pavers are stained with slippery black spot, lichen, moss and algae, they will benefit from a targeted treatment with LTP Blackspot & Algae Remover.   Designed to break down microspores and black spot ‘hyphae’ before they colonise, LTP Blackspot & Algae Remover is acid-free, so it’s safe to use on acid-sensitive stone.  However, it does contain a bleaching action to remove stains, so test first on an inconspicuous area.  

How to apply LTP Blackspot & Algae Remover:

1. Remove furniture and other items from the area to be treated.
2. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
3. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
4. Hose off thoroughly with clean water.  

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during next winter's freeze and thaw cycle.

Added protection

If your pavers haven't been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush. It can be applied over residual moisture and will protect pavers from moisture, stains, weathering and efflorescence.  It’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more, please visit http://www.ltp-online.co.uk or visit LTP TV on YouTube to access our library of demo videos.

For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Featuring acid-replacement technology – and a biodegradable, environmentally-friendly formulation - new Grout Haze & Limescale Remover is a rapid-action cleaning agent that can be used on all types of glazed and polished porcelain, glazed ceramic, slate, quarry tiles, brick, mosaics, terracotta, granite and unpolished natural stone. It is also ideal for the fast removal of residue from grout application tools. In new installations, grout should be allowed to ‘film off’ before application. The treatment is then sprayed onto tiles and wiped across the surface with a micro-fibre cloth, before rinsing with a clean, wrung cloth.

Before Treatment

After Treatment

For older, stubborn residues – and to remove hard water stains and limescale - the treatment should be applied and tiles scrubbed immediately with a white nylon scrubbing pad. Released residue is then removed with a micro-fibre cloth. Sealed natural stone surfaces should be resealed after treatment.

LTP is a leading UK manufacturer and supplier of sealing, cleaning and aftercare products for tiles and stone. Established in 1984, LTP supplies over 700 tile, stone, fireplace and kitchen showrooms and its range is specified for both domestic and commercial use.

To find out more about LTP surface care solutions, please call 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

ends -

For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01590) 610313 or email angie@afpr.co.uk

Things to avoid
Homemade cleaning solutions and steam cleaning are two cleaning methods to avoid. The most common homemade hacks – vinegar, lemon and baking soda – are all very acidic and will damage limestone. Bleach should also be avoided; whilst it is alkaline, rather than acidic, it is still too harsh for natural stone. Steam cleaning isn’t recommended either, as it can damage a stone sealer and compromise protection. Intense heat can also cause ‘spalling’ or flaking of the limestone.

What to use for routine and deep cleaning
A regular ‘routine’ clean will maintain a hygienic environment and a tile’s aesthetic. Once grease and dirt builds up on a surface, tiles will be more difficult to clean, and they may become slippery. A periodic deep clean in high traffic areas may also be necessary. Often, the same detergent can be used for routine and deep cleaning, with the dilution ratio and method adjusted in suit. This is the case with LTP Grimex – the detergent that we recommend for limestone floor tiles.

https://youtu.be/DeJtsN3MBFU

Methods for routine and deep cleaning
Routine cleaning with LTP Grimex: Sweep or vacuum the floor, to remove dust and loose dirt. Dilute one part LTP Grimex in 10 parts warm water. Apply with a cloth or mop. Wipe off thoroughly with a clean damp cloth.

Deep cleaning with LTP Grimex: Sweep or vacuum the floor to remove dust and loose dirt. Dilute one part LTP Grimex in 3 parts warm water. Apply liberally, spreading over the surface of the tiles. If necessary, agitate with a scrubbing brush. Leave to react for 5-10 minutes, keeping the surface wet with additional solution. Agitate surface again, mop up and rinse thoroughly with clean water.

How to maintain a seamless surface, from home to garden
If the same limestone tile is installed from inside to outside – for example, through bi-fold doors – it’s important to maintain both areas to avoid an unsightly contrast. Whilst LTP Grimex can be used on outdoor slabs, a specialist external treatment will help tackle issues specific to paths and patios, like black spot, lichen and moss which cause discoloration and create a slip hazard. We recommend LTP Blackspot & Algae Remover.

https://youtu.be/RDBvDMXKSCU

How to remove stubborn stains
If staining is still present on a floor that has been deep cleaned, we recommend use of a specialist treatment. Various solutions are available to safely remove common stains, like oil and grease, rust, wax, grout and salt residue. LTP’s full range of intensive cleaners, for all tile types, are shown here. Always check that the product is suitable for limestone. If the treatment is designed to strip the surface, you will need to re-apply a sealer to reinstate stain protection.

For more advice on the best maintenance regime for your limestone floor, please call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

Cleaning floors and tiled areas is one of the hardest jobs and many of us reach for a heavy-duty cleaner.   However, it rarely offers the best solution.  Most of these detergents – including many of the eco ranges - contain acid which will damage tiles, grout, chrome fittings and any protective sealer that’s been applied.  This is a particular issue for natural surfaces like stone and marble, which are acid sensitive.  To deep clean safely, we recommend LTP Grimex.  As the name suggests, it removes grime and stains, including oil, grease, ingrained dirt and wax.  It’s safe to use on natural stone, as well as porcelain and ceramics tiles, and can also be used to deep clean marble and granite worktops.

For grout and silicone that’s stained with mould spores, we recommend LTP Mouldex.   This treatment comes in a pump spray and it’s formulated to cling to surfaces, which targets the treatment and prevents run-off.   Mouldex has a bleaching action which helps restore colour and it’s antibacterial, so it helps prevent mould regrowth.  It can be used on natural as well as artificial stone – and on coloured grout – but it’s always best to test first, in an inconspicuous area.

How to use LTP Grimex

For areas that are slightly grubby – and for absorbent tiles – dilute one part of Grimex to ten parts of warm water.  Apply with a cloth or mop and rinse with clean water.  For dirtier surfaces, use a stronger 1-3 dilution and agitate the surface with a brush.  Let the solution act for 5-10 minutes, mopping with additional solution to keep the tiles wet, and agitate again before mopping up and rinsing thoroughly with clean water.

For built-up grime and stubborn stains, Grimex can be used neat and then thoroughly rinsed.

Sometimes, tiles that have been deep cleaned with a low dilution of intensive cleaner will need to be resealed.  The easiest way to see if a sealer is still performing is to carry out a water test:

1. Drop a bead of water onto the surface.
2. If it sits in place, it is well sealed. If the water quickly soaks into the tile or makes the surface look darker, then it needs resealing.

To top up protection, choose a suitable sealer from LTP’s range and carefully follow application directions.

How to use LTP Mouldex

Before applying the treatment, make sure that tiles are completely dry.  Spray Mouldex 5-10cm from the surface and leave it to act for 45 minutes.  Then, apply a little water and agitate with a stiff brush to help lift the grime and dirt. Finally, rinse the surface thoroughly with water and a clean sponge.  For silicone and elastic grouting, and for stubborn stains, the treatment can be left overnight.    NB.  Mouldex shouldn’t be used with acid-based residual grout removers or other acid- based cleaners.

Rinse-free routine cleaning

Once the deep cleaning’s done, LTP Stonewash is a great all-rounder.  A rinse-free pH natural spray cleaner, it can be used on all hard surfaces, from marble to polished porcelain. For walls and work tops, spray 20 cm from the surface and wipe over with a clean, damp cloth. For natural and artificial stone floors, we recommend LTP Waxwash; just dilute 2-3 capfuls (or 5 for dirtier surfaces) into a bucket of warm water, mop and allow to dry.  

For more advice, browse our Technical Blog or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk

This year marks the 35th anniversary for LTP’s Grimex deep cleaner – one of LTP’s top-five best selling products. The heavy duty “grime and stain remover” remains a firm favourite within the tiling and cleaning sectors, providing a solution for a myriad of issues, indoors and outdoors. Still featuring the original formulation, Grimex is designed for all types of natural and engineered stone and tile, from limestone and marble, to ceramic and porcelain. It can be used to remove residue before application of a sealer; to daily and deep clean surfaces and to renovate tiles in all environments, including historic settings.

Used at different dilutions to tackle different issues, Grimex removes oil, grease, ingrained dirt, water-based paint and old layers of wax. Applications range from paths and patios, pool surrounds and cladding, to floors, countertops, wall tiles and hearths. For general cleaning, it is diluted with water 1:10 and applied with a mop or cloth; surfaces are then wiped with a clean, damp cloth. At this dilution, Grimex has a coverage rate of approximately 50m2 per litre. For more severe staining – and to strip surfaces during renovations and before resealing – it is used at a 1:3 dilution or neat, and surfaces are agitated before rinsing.

To find out more about Grimex and to request a free sample, please contact LTP on please call 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

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For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01579) 673026 or email angie@afpr.co.uk

Refurbishing & deep cleaning

When a tile or stone surface isn’t properly protected and maintained, the build-up of dirt and organic residue greatly affects the aesthetic, safety and ease of maintenance. In many cases, neglected surfaces are then treated with toxic chemicals. Whilst this may have the desired effect of removing residue, these types of interventions are damaging to the environment and often costly and time consuming. If solutions are unsuitable, they can also damage the tile, grout joint and any sealer that’s been applied, creating more issues that will need to be addressed.

If a tile needs to be renovated or deep cleaned, choose a safe, non-caustic specialist treatment like alkaline-based intensive cleaner, LTP Grimex. Specific residue can also be safely tackled by using a specialist remover. For example, LTP Cement, Grout & Salt Residue Remover; LTP Rust Stain Remover, LTP Blackspot for the removal of algae and LTP Solvex for the removal of wax, silicone, acrylic, polyurethane and epoxy grout.

Surface protection

Protecting a tile pays real dividends. It retains the surface aesthetic and makes maintenance easier, which is turn safeguards performance. Stone and polished porcelain should ideally be sealed with a water-based treatment before and after grouting, to protect the tiles from grout residue, stains and ongoing wear and tear. Textured matt porcelain tiles, whilst not requiring treatment with a sealer, will benefit from application of a water-based barrier treatment before grouting – like LTP Porcelain Tile Protector. A further coat after maintenance will also make ongoing maintenance easier. Tiles that have been intensively cleaned should also be resealed, to protect them going forwards.

How do I apply LTP Porcelain Tile Protector - YouTube

When water’s left to stand on a natural stone or tile surface, it can dry and leave behind a stain.  Circular ring marks from cups and glasses are common, especially on porous stone surfaces like limestone, sandstone and terracotta.  But it’s a problem that can also affect glazed ceramics and porcelain tiles, as well as polished granite and marble.

Why stains occur

Stains often occur as a protective sealer wears away and water is allowed to penetrate beyond the seal. This can happen over time but using a harsh cleaning product will erode the protective treatment and shorten its lifespan. In hard water areas, water droplets can also dry out and leave a lime deposit on the surface; these stains can be particularly difficult to remove with a normal detergent. 

Repeated cleaning of stone surfaces using water and a mild cleaner can also create a surface film.  When we mop and clean, the water dries and leaves a very slight film of residual detergent. Over a period of months, this can create a micron-thick film, invisible to the naked eye. Water droplets then dilute the detergent, leaving a spot mark.  This all happens on a fairly microscopic level, which is why this kind of staining is only visible when looking across a surface towards a light source.

In order to remove the stains, you’ll first need to identify the type of tile and finish, and whether a sealer has been applied; this will determine the best method for removing the stain. Often, when a protective seal is in place, the method for tackling the problem is much less aggressive and more straight forward because the stain is generally only affecting the layer of sealer.

POLISHED LIMESTONE, MARBLE, TRAVERTINE AND OTHER ACID-SENSITIVE POLISHED SURFACES

For acid sensitive polished surfaces, we recommend using  LTP Power Stripper. Simply wash the area as directed by the label instructions, rinse and allow to dry. If the surface has a protective seal, it may need to be re-sealed. To make sure that you achieve a uniform finish a wider area may need treatment.  

Note. Always test the treatment on an inconspicuous area before applying to a full surface. 

LTP Power Stripper – directions

• Sweep or dry mop floor to remove grit and surface dirt. Mix the solution according to the required dilution. (Surface cleaning: 1:12 in warm water. Deep stripping: 1:6 in warm water.) 

• Working in manageable sized areas, mop on the solution to thoroughly wet the floor. Leave for 5 - 10 minutes, keeping the floor damp with further solution, if it begins to dry out. Agitate the surface using a mildly abrasive pad. Remove the dirty residue using clean warm water and absorbent cloths. If treating a large area, a wet vacuum will make the process much easier.  Then, rinse the surface thoroughly and allow it to dry completely before applying further treatments. You may need to repeat the process a couple of times on severely stained surfaces. 
•  

ALL OTHER SURFACES INCLUDING ALL NON-POLISHED STONES

For all other surfaces, we recommend treatment with  LTP Cement, Grout & Salt Residue Remover. This product is safe to use on acid-sensitive non polished surfaces.

LTP Cement, Grout & Salt Residue Remover - directions

• For mild staining on non-absorbent surfaces, dilute 1 part of LTP Cement, Grout & Salt Residue Remover in 4 parts of cool water. Apply with a cloth or sponge wrung out in the solution. Leave for up to 15 minutes. Extract released residues using a sponge and water.

• For more stubborn staining, dilute 1 part of LTP Cement, Grout & Salt Residue Remover in 1 part of cool water. Apply liberally and spread over the surface. If necessary, agitate with a nylon scrubber, scrubbing brush or rotary scrubbing machine and leave to react for 5-10 minutes, keeping surfaces wet with additional solution. Extract and rinse thoroughly with clean water. 

• For severe staining, dampen the surface to be cleaned with water and apply the solution undiluted. Agitate with a nylon scrubber, scrubbing brush or mechanical scrubber. Immediately extract and rinse thoroughly with clean water. 

If the surface needs to be re-sealed after stains have been removed, we recommend either LTP Mattstone or LTP Mattstone H20 for a natural (invisible finish) on honed and natural riven stones or, for polished surfaces, LTP MPG Sealer or MPG H20 Sealer. 

For more advice, browse LTP TV on YouTube, contact the LTP team direct on 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

A former Teaching Assistant, Lisa was looking for a career change into a customer-focused role and a new challenge outside of the education sector. In the new position, Lisa will handle business administration, as well as customer merchandising, account management and technical support. She will also support LTP’s sales team in the development of new business opportunities.

“Having worked within a primary school environment, Lisa brings abundant personal and organisational skills to LTP. She also has a keen interest in cleaning and restoring. We’re looking forward to supporting her in a new role and sector and are delighted to have her on board,” commented Director, Julie Lock.

Outside of work, Lisa enjoys darts and skittles, where she recently raised the trophy with her team, in the local women’s skittles league, as winners of the division.

To find out more about opportunities at LTP, please call 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

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A regular sweep and occasional clean will maintain both the aesthetic and performance features of a paver. Dirt and residue, decaying leaf matter and algae can quickly build-up, staining unsealed surfaces and causing a slip hazard. Keeping on top of maintenance can help eliminate these issues and ensure that outdoor areas are safe and usable year-round.

Why pressure washing makes matters worse

Pressure washing may seem like the quickest and easiest way to clean pavers but it will only wash dirt off the surface. Use of excessive amounts of water can exacerbate staining and slip issues. It will also do little to remove black spot and algae which, once established, sends its tendrils or ‘hyphae’ down into the paver, searching for nutrients. (In fact, the extra dose of water improves conditions and encourages spread.) Pressure washing can also loosen grout, erode the surface of the paver and damage any protective sealant applied. It also uses large quantities of water, which can be both costly and detrimental in environmental terms. A specialist treatment, on the other hand, will react with ingrained residue and organic matter, drawing it out of the stone’s porosity. It will also help to prevent regrowth of algae and other organic material – and, being diluted in a bucket of water, will conserve water.

Specialist treatments, like LTP Grimex, draw out dirt and are especially effective at removing leaf stains. Application is fast and easy: the cleaner is diluted with water according to conditions – 1:10 for mild staining and 3:10 for severe staining – and applied with a brush, broom or mop. When tackling severe staining, the pavers should be agitated with a scrubbing brush and the treatment left to act for 5-10 minutes, adding more solution to keep the surface wet. Any residue should then be swept up and the surface rinsed with clean water.

https://youtu.be/UmsChHoI8TU

LTP Grimex application on porcelain paving

Tackling a build-up of black spot & algae

If paving hasn’t been regularly maintained, there is likely to be a build-up of algae. Algae thrives in damp places, so can be particularly prevalent in the autumn and winter. It comes in lots of different forms and often causes a green film, growth or powdery deposit on pavers. The term algae includes: moss; liverwort – the flat green growth with tiny leaf-like lobes, crust-like lichen, black spot and jelly-like growths caused by a cyanobacteria called Nostoc.

Black spot can be particularly hard to remove, once it has become established. Originating from plants and trees, black spot is a dust-like lichen microspore carried by the wind and rain. It leaves tell-tale black – or sometimes white – spots on the surface of pavers. Black spot colonises on stonework, taking about 2-3 years to get really established below the surface.

Certain leaves can also be a particular menace, especially Sycamores. Aphids that live on the surface of the leaves excrete a sugary substance that provides a food source for algae. The combined sugar and bacteria leaves a tell-tale black spot stain and sometimes whole leaf prints.

None of these growths are hazardous – in fact, lichen is particularly common in areas with clean air, so its appearance can be a positive sign – but slippery hard surfaces can be. The open texture of a stone paver enables microspores to spread more easily if surfaces aren’t maintained – but even less porous materials like porcelain aren’t immune.

Any treatment used to remove a build-up of algae needs to have a bleaching action, to restore the colour of the paver. It also needs to target the hyphae below the surface. But care needs to be taken – if a treatment is acidic, it can damage acid sensitive material, erode grout and damage any sealer applied. We recommend treatment with LTP Black Spot & Algae Remover, which can be used on all types of natural stone, concrete, brick and porcelain. It removes organic residues – including black spot, lichen, moss and algae – shifting surface stains and breaking down the hyphae below the surface, preventing regrowth. When applying the remover, it’s important to treat the whole area of paving, for a uniform appearance. It should also be left to act for the correct amount of time, so that it’s able to penetrate deep into the porosity; if hyphae are left untreated, they will spread back to the surface and throughout the paver.

Terracotta is a very wholesome, natural material.  It’s basically clay that’s dried in the sun or fired in an oven and the name literally means ‘baked earth’.  Along with its beautiful burnt orange colouring, terracotta provides a robust finish that’s versatile and easy to look after.  However, like many natural materials, it is porous and can easily become stained.  There are two ways of protecting terracotta tiles – either by applying a synthetic sealer or the more traditional method using Boiled Linseed Oil and wax.

The two ways to protect terracotta: 

Synthetic Sealers

Synthetic or acrylic sealers are the easier option in terms of application.  They’re generally faster to apply and they create a surface seal with a degree of sheen.  LTP options include Colour Intensifier & Stain Block – a non-film forming impregnating sealer that fills the pores of the tile.  This treatment can be used on its own, for a natural finish, but we recommend a follow-on application of LTP Ironwax, to make tiles easier to mop and keep clean. LTP Ironwax is a film forming sealer that creates a self-shine surface layer; it is applied with a sponge or paintbrush to textured tiles, or with a cloth or pad to honed tiles, and no buffing is required.  Three coats are generally sufficient – with an hour between each application – but a higher sheen can be created with additional coats, up to a maximum of six.

LTP Colour Intensifier is also applied with a sponge, pad, cloth or brush and left for 60 minutes between coats.  For a strong colour tone and for more absorbent material, further coats can be applied after 60 minutes.  All terracotta’s have different levels of porosity, so there is no specific recommendation regarding number of coats.  The best advice is to apply the sealer, as instructed, until the tile is fully saturated, ie., an even layer of sealer is still visible on the tile surface 30 minutes after application. The tile should be left to dry and then gently buffed to remove any excess, if any remains.

During the second stage of treatment, wax is applied. This provides a resilient protective layer against water, dust and dirt, as well as extra sheen.  LTP treatments include LTP Clear Wax – a natural, clear finish – and medium brown LTP Antique Wax which deepens the colour tone and, in many cases, instantly ages the appearance of the terracotta. Both treatments have a soft paste consistency. They are applied with a cloth and the surface is then buffed.  The traditional treatment method can also be used to restore older floors, once the tiles have been thoroughly cleaned and any existing sealant removed. 

https://youtu.be/FonA7VfIIh8

For ongoing cleaning and aftercare, we recommend LTP Waxwash – a gentle, pH neutral cleaner which contains a trace of Linseed Oil to reinforce protection.

For more advice on floor maintenance and protection, please contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit http://www.ltp-online.co.uk

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For further media information and photography, please contact:

Angela Fitzhugh PR Ltd at angie@afpr.co.uk or tel. +44 (0)1579 673026.

What causes the orange stain?

The grout colour change and orange staining that forms either side of the grout joint is often caused by poor drainage and moisture lingering in the joint. If the paver is fixed to a bed that isn’t permeable, and a permeable brush-in jointing compound is used, rain water will dwell in the joint and seep into the edges of the stone.  This lingering moisture causes the natural iron content in the stone to oxidise around the edges which creates the rust-coloured stain.  In a dense stone, like granite, the dark edge of the stone can take a very long time to dry out.   Some black brush-in grouts that sit in water for long periods of time can also turn orange because there are pigments of iron in the grout that react with the moisture.

To remove the orange staining, we recommend LTP Ferrex which is specially formulated to remove rust stains that arise from within a paver.  Ferrex can be used on all types of hard ferrous stones including granite, sandstone and slate.

See our LTP TV YouTube video at: https://youtu.be/_au8_4HpCaw

Ferrex is an acid-based cleaner – but it is the right kind of acid for harder stones.   It is not the same as Brick Acid which can stain/damage pavers and accelerate oxidisation.  However, it isn’t suitable for use on acid sensitive surfaces, like limestone, marble or pavers with a highly polished finish. 

Before application, Ferrex should be tested on an inconspicuous area, to establish which dilution is suitable before treating the whole surface. Here’s a link for more information on application and dilutions. You can also see a Video Aid on the product page and on LTP TV. Treatment to remove these types of stain can take between 3-6 hours. 

How to apply LTP Ferrex 

1. After testing on a small area, apply the solution to the surface and spread out evenly. For external applications garden sprayers can be used.
2. For severe staining, surfaces should be agitated using a short haired scrubbing brush or black emulsifying pad. 
3. After 3 – 6 hours, rinse with plenty of clean water. If traces remain after a couple of days, repeat the process. 
4. After treatment, we recommend that the surface is protected from water with an impregnating sealer like LTP External Stone Sealer or LTP Mattstone H20.  This will greatly reduce the risk of rust discolouration returning. 

Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside. 

For more information on different types of rust stains, see our blog – The two types of rust and how to remove them.

For more advice, browse LTP TV on YouTube, contact the LTP team direct on 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

Establishing an outdoor regime

Path and patios will benefit from a thorough clean every couple of months or so – ideally, twice during the winter and three times during late spring/summer.  Surfaces that are regularly cleaned will be far easier to keep clean.  Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, will also help maintain a seamless aesthetic.  

Before embarking on a late summer clean-up, identify any furnishings or materials that aren’t winter or frost proof; these will need to be packed away or covered up before the weather turns. It’s worth emptying and stacking pots as soon as flowers are spent to make patio maintenance easier; some might need to be stored away if they’re not frost-resistant.  Pavers can then be swept to remove dirt, debris and fallen leaves.

It’s worth sweeping up leaves on a regular basis, as they can quickly decay and cause a slip hazard. Certain leaves, like sycamores, are a particular menace; aphids that live on the surface of the leaves excrete a sugary substance that provides a food source for algae.  The combined sugar and bacteria leaves a telltale black spot stain and sometimes whole leaf prints.    

A note about pressure washing:

A blast with a jet wash may seem like a quick and easy way to clean pavers but it will only wash dirt off the surface.  Over the autumn and winter, use of excessive amounts of water can exacerbate staining and slip issues.  Jet washing can also loosen grout, erode a stone surface and damage any protective sealant applied.  A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity, and will also help to prevent regrowth of algae and other organic material.

Cleaning pavers – recommended products & methods

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.   This treatment is also especially effective at removing leaf stains, including those left by Sycamore leaves. Before cleaning, remove furniture, pots and other objects.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your patio is prone to black spot, lichen, moss and algae, we recommend periodic treatment with LTP Blackspot & Algae Remover which will break down microspores and black spot ‘hyphae’ before they colonise.  Late summer is a good time to carry out the first treatment. LTP Blackspot & Algae Remover is acid-free, so it’s safe to use on acid-sensitive stone, but it does contain a bleaching action to remove stains.  So, as before, test first on an inconspicuous area.  Then, remove furniture and other items from the area to be treated.

How to apply LTP Blackspot & Algae Remover:

1. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
2. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
3. Hose off thoroughly with clean water.  

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during the freeze and thaw cycle of winter.

Adding in protection

If your patio hasn’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  They are also water-based, so can be applied over some residual moisture.  As a rule of thumb, it is safe to apply a treatment provided that no rain is forecast for 24 hours, either side of application. 

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush, as shown in the Video Aid.  It will protect pavers from moisture, stains, weathering and efflorescence, and it’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase grout working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Although sandstone is a robust material, it is porous and it also has a high iron content.  When the iron comes into contact with a standard cement mortar or patio cleaner it will create a red/brown blemish.  Pavers that are installed onto a non-permeable surface, i.e., one that will not allow water to penetrate, will suspend moisture in brush-in permeable jointing compound. Moisture lingers and penetrates into the edge of the paver.  When a patio is cleaned, the cleaning solution will leach into the open capillaries of the stone. Within the stone, the acidity of the cleaning solution then reacts with the iron in the stone, causing it to oxidise. This gives the paver a brown frame.

Rust or orange-coloured discolouration can also appear naturally within stone pavers, as the iron can oxidise or rust when it comes into contact with rain. This type of staining is often referred to as ‘iron break-out’.

To remove all types of staining, we recommend treatment with LTP Ferrex. Formulated to remove rust stains that arise from within a paver, Ferrex can be used on all types of hard ferrous stones including sandstone, granite and slate. Whilst Ferrex is an acid-based cleaner, it is the right kind of acid for harder stones.   It is not the same as Brick Acid which can stain/damage pavers and accelerate oxidisation.  However, it isn’t suitable for use on acid sensitive surfaces, like limestone, marble or pavers with a highly polished finish. 

Before application, Ferrex should be tested on an inconspicuous area, to establish which dilution is suitable before treating the whole surface. Treatment to remove these types of stain can take between 3-6 hours. 

Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside. 

For more information on different types of rust stains, see our blog – The two types of rust and how to remove them.

For more advice, browse LTP TV on YouTube, contact the LTP team direct on 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

Cleaning commences with LTP Grimex

The contrast between the cleaned and uncleaned area below.

Designed by Simpson Brown, The Welcome & Learning Centre connects the Grade I listed Cathedral to its Chapter House building and provides upgraded facilities for the congregation, education groups, visitors and staff.  Special features include a timeline telling the story of the Cathedral from the year 300 to the present day, and an interactive feature where visitors can go on a virtual tour to areas of the Cathedral that can’t be accessed, such as the watching loft where monks used to look over the shrine of St Alban.  Internally, key materials include Yorkstone flooring, oak joinery, dark grey painted-steel, glass and bronze.

Yorkstone provides a hardwearing surface finish and as most stones have a dense, sharp grain, they provide good anti-slip properties.  The sandstone’s naturally porous structure will collect residue but this is easily removed using the correct maintenance products and methods.   At the Centre, the renovation commenced with an initial deep clean using LTP Grimex. An intensive cleaner and restorer, Grimex removes oil, grease, ingrained dirt, grime and old layers of wax and it is safe to use on all types of natural and engineered stone.  The Yorkstone floor was then protected with ECOPROTEC Natural Finish Stone Sealer – a water-based impregnator that protects without forming a film or changing the appearance of the stone.  The sealer has an environmentally friendly low VOC and low odour formulation.

Following the renovation, the Silex UK/Extensive team trained staff on the correct maintenance regime and method, using ECOPROTEC Natural Stone & Porcelain Aftercare Cleaner – a pH-neutral, no-rinse/no-residue cleaner – to ensure that the floor’s aesethetic and performance characteristics were maintained. 

For more information about the project and specification, please contact the LTP team on tel. 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

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For further media information and photography, please contact Angela Fitzhugh-Scott at angie@afpr.co.uk

What is efflorescence?

Efflorescence is made up of soluble salts and moisture which rise, evaporate and leave behind a crystalline salt deposit.  It can occur after a spell of wet or cold weather, or build up gradually, and it’s often a seasonal problem.  Standard cleaning products won’t effectively remove it.   

Brick acid – a traditional acid cleaner – is often recommended by the building trade as a go-to solution but there are many reasons why this shouldn’t be used.  Brick acid is hazardous and corrosive.  It often has ahydrochloric base which can strip the top layer from a paver. It’s especially damaging to acid-sensitive materials, like limestone, where it effectively eats away at the surface.  

Safe removal of efflorescence

For the safe, effective removal of efflorescence, we recommend LTP Cement, Grout & Salt Residue Remover.  An acid-replacement treatment, the Remover has a synthetic base, so it is safe to use on all types of tile and natural stone surfaces, except those with a polished finish.  This means that it can be safely applied to unpolished acid-sensitive surfaces, including limestone and travertine, as well as unpolished porcelain, glazed ceramic, slate, quarry tiles, brick, terracotta and granite and masonry.  The treatment also removes rising salt caused by substrate moisture and spot fixing – as well as cement and grout residues – and, unlike harsh acidic treatments, it does not tarnish chrome or steel.  It is safe to use indoors and outdoors.  

1. To remove mild staining and to treat non-absorbent surfaces, dilute 1 part of the Remover with 4 parts of cool water. Always dilute the treatment by adding it to water, rather than the other way around. 
2. Apply with a cloth or sponge wrung out in the solution. Leave to act for up to 30 minutes. 
3. Wipe away the released surface residue with a sponge and cool, clean water. 

For more severe staining, use a 1:1 dilution and, if necessary, agitate the surface with a scrubbing brush. Leave to act for 5-10 minutes, keeping the surface wet with additional Remover.  Wipe away the residue and rinse, as before. 

In extreme cases, the Remover can also be applied neat and the surface agitated with a nylon pad, scrubbing brush or mechanical scrubber.  Residues should then be removed straight away and the surface rinsed immediately.

All LTP treatments are made and stocked in the UK.  To find out more, visit http://www.ltp-online.co.uk or contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk.

Jet washing may seem like the best method for a fast clean but it will only wash dirt off the surface of the slabs. High pressure water will also damage grout joints. A specialist treatment, on the other hand, will react with ingrained residue and organic matter, drawing it out of the stone’s porosity.  It will also help to prevent regrowth of algae and other organic material.

The mop-and-bucket approach is one that’s very much routine in other countries.  Patios are mopped in the same way as indoor floors, on a regular basis. This makes ongoing maintenance far easier.  Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, also helps maintain a seamless aesthetic.

Porcelain and slate are really easy to mop. Here’s an example of a beautiful slate patio, finished with Blue Black Slate from Nustone.

What to put in the bucket

To properly remove stains and ingrained dirt, we recommend a thorough wash with deep cleaner and stain remover, LTP Grimex. Before cleaning, remove furniture, pots and other objects, and sweep the slabs to remove any leaves and residue. Then, test the cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Mop the surface and rinse with clean water. For more severe staining, dilute one part of Grimex with 3 parts of warm water. Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  Sweep up any residue and rinse thoroughly with clean water.  Once stubborn staining has been removed, a regular clean will keep on top of things.

Dealing with slippery paving slabs

If your patio is prone to slippery black spot, lichen, moss and algae, it will benefit from a targeted treatment with LTP Blackspot & Algae Remover. This solution is designed to break down microspores and black spot ‘hyphae’ before they colonise and it’s acid-free, so safe to use on acid-sensitive stone. However, it does contain a bleaching action to remove stains, so test first on an inconspicuous area.

Oil & Grease – and protecting for the future

If you regularly cook outside, and your pavers have become stained with oil and grease, you’ll find plenty of advice in our blog – Removing Oil & Grease from Paving Slabs.

If your patio hasn’t been sealed, consider applying a protective treatment once the surface has been deep cleaned. We recommend LTP External Stone Sealer for natural stone and LTP Porcelain Tile Protector for matt porcelain pavers. Both treatments are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

As well as offering practical and aesthetic benefits, porcelain requires little maintenance – but it isn’t maintenance-free.  Tiles with a textured, matt finish don’t need to be sealed, unlike natural stone.  However, their textured finish which provides that all important grip under foot can create challenges during installation.  Grout and brush-in joining compounds tend to get stuck in the tile’s high/low surfaces, along with general dirt and residue. This creates a white film on the surface of the tile and, as the texture is lost, the slip resistance is also compromised.  Sometimes an unnecessary coat of stone sealer is then applied over the top and the residue becomes sandwiched between the tile and the sealer.  If the tile is damp when the sealer is applied, this can also cause the surface to become opaque.

A resin stain on a porcelain tile, close-up.

New installations - creating a barrier against grout residue

As mentioned, unlike natural stone pavers, textured matt porcelain paving slabs don’t need to be sealed.  (The only type of porcelain that does need sealing is a tile with a polished finish but these aren’t suitable for outdoor use.)  However, we strongly recommend application of barrier treatment – LTP Porcelain Tile Protector – before the tiles are fixed into place.  

LTP Porcelain Tile Protector is non-film forming and won’t change the appearance of the tile in any way - but it will help to prevent staining during installation by creating a barrier across the base of the textured surface.  It also makes it easier to remove residues and improves/increases grouting working times, for a faster and easier installation. A final coat after installation also makes ongoing maintenance easier too; it doesn’t seal the surface – it has a completely different formulation to a sealing product – but it penetrates into the fissures of the textured tile and leaves active ingredients behind which make removal of residues easier.

https://www.youtube.com/watch?v=t7d974aBMcQ&t=1s

How to apply LTP Porcelain Tile Protector

1. Ensure that the tiles are completely clean, dry, and free from dirt, grime, cement, and grout. If necessary, wash the surface first with a dilute solution of LTP Grimex – diluted 1:5 - and scrub with a white nylon pad. Rinse well to remove residues and leave to dry.
2. Shake the bottle of Protector before use. Before grouting, apply evenly to the surface using a broad paint brush, foam roller or light pressure sprayer. Allow to dry for 30 minutes. Apply a second coat. Leave to cure for a minimum of 1 hour before grouting or pointing.
3. Once the joints are dry, and residues have been removed, apply a further coat of protector over the face of the tile and the joint. 

Existing installations – how to remove grout residue

For tiles that are stained with grout and brush-in jointing compound, we recommend LTP Solvex.  Powerful, but non-caustic, the Remover softens residues – including epoxy, acrylic and silicone from brush in jointing compound – making removal easy.

How to apply LTP Solvex

1. Shake the bottle before use and, before applying across the whole surface, test on an inconspicuous area.
2. Apply generously by dabbing or rolling onto the tiles, working in manageable areas.
3. Leave for up to 30 minutes. If the tiles dry out within this timeframe, apply a little more solution to keep them wet. 
4. Use a stiff short haired brush or nylon scrubbing pad to remove the softened residues from the surface. Add a little water and scrub again. 
5. Extract the released residues using a sponge or wet vac and rinse with water. Repeat the process if unwanted material remains.

Once the residues have been removed, we recommend application of LTP Porcelain Tile Protector, as it will make ongoing maintenance of the textured surface far easier.

https://www.youtube.com/watch?v=t0xBP-Kq74c&t=2s

Ongoing maintenance

Just like indoors, outdoor tiles will benefit from a periodic clean.  Keeping the surface relatively clean will prevent a build-up of dirt in the textured surface.  This, in turn, will make ongoing cleaning easier and will maintain the tile’s slip resistance.  

Jet washing may seem like the best method for a fast clean but it will only wash dirt off the surface of the slabs. High pressure water will also damage grout joints. A specialist treatment, on the other hand, will react with the dirt and organic matter, and will help break it down.

We recommend LTP Grimex.  Just add one capful per litre of water, mop the surface and leave it to dry. There’s no need to rinse; unlike general household cleaners, this treatment won’t leave a slippery residue. 

As a general rule of thumb, it’s worth cleaning porcelain paving every couple of months or so – ideally, three times during late spring/summer and twice during the winter.  Surfaces that are regularly cleaned will be far easier to keep clean.  Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, will also help maintain a seamless aesthetic.  

For more advice and information about other LTP cleaning and sealing solutions, please visit https://www.ltp-online.co.uk or contact the LTP technical team on 01823 666213 and email info@ltp-online.co.uk

LTP Solvex is an intensive cleaner or stripper.   A non-caustic formulation, it removes stubborn residue – including congealed fat and wax - by softening deposits so that they can be easily removed from the surface without causing any damage. It can be used on all natural and engineered stone, including sandstone, slate, travertine, terracotta, quarry tiles and porcelain. LTP Grimex is the ideal partner to Solvex and is used to wash down the surface after treatment, before a final rinse.  

It’s really easy to apply both treatments.  LTP Solvex is poured neat, directly onto stains.  It should be generously dapped onto problem areas with a cloth or brush; always protect hands with suitable gloves.  The solution is then worked in manageable areas – as far as you can reach without treading into the cleaner.  The solution is left to work for up to 30 minutes; during this time, more should be applied if it starts to dry out.  Using a coarse, stiff brush or LTP’s Black Emulsifying Pad, the softened residue is then removed from the surface.  The process should be repeated if any staining remains. 

To wash down the pavers after treatment, LTP Grimex is diluted 1:3 with water and applied with a cloth, mop or brush.  The surface should then be rinsed with plenty of water and left to dry. 

If you’re removing residue from a previously sealed surface – or want to seal an untreated patio to protect it from future stains - a new coat of sealer can be reapplied after cleaning and once the surface is sufficiently dry; this may take a minimum of 24 hours.  We recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Jet washing may seem like the best method for a fast clean but it will only wash dirt off the surface of the slabs. High pressure water will also damage grout joints. A specialist treatment, on the other hand, will react with the dirt and organic matter, and will help break it down.

A deep & thorough clean

To properly remove stains and ingrained dirt, we recommend a thorough wash with deep cleaner and stain remover, LTP Grimex. Before cleaning, remove furniture, pots and other objects, and sweep the slabs to remove any leaves and residue. Then, test the cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or garden broom, and rinse with clean water. For more severe staining, dilute one part of Grimex with 3 parts of warm water. Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  Sweep up any residue and rinse thoroughly with clean water.

If your patio is prone to slippery black spot, lichen, moss and algae, it will benefit from a targeted treatment with LTP Blackspot & Algae Remover. This solution is designed to break down microspores and black spot ‘hyphae’ before they colonise and it’s acid-free, so safe to use on acid-sensitive stone. However, it does contain a bleaching action to remove stains, so test first on an inconspicuous area.

How to apply LTP Blackspot & Algae Remover:

Remove furniture and other items from the area to be treated. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work. Hose off thoroughly with clean water.

Replacing lost grout

Once you’ve cleaned your patio and it’s dry, it’s an ideal time to replace any lost jointing sand or cement mortar. This will stop the ingress of water and will help protect paving during the freeze and thaw cycle in the winter.

Added protection

If your patio hasn’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and LTP Porcelain Tile Protector for matt porcelain pavers. Both treatments are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush. It can be used over residual moisture and will protect pavers from moisture, stains, weathering and efflorescence. It’s also UV resistant and non-yellowing.

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier. On newly laid tiles, it also protects against staining and helps increase working times.

For advice on patio cleaning and protection, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Still featuring the original formulation, Grimex is designed for all types of natural and engineered stone and tile, from limestone and marble, to ceramic and porcelain. It can be used to remove residue before application of a sealer; to daily and deep clean surfaces and to renovate tiles in all environments, including historic settings. 

Used at different dilutions to tackle different issues, Grimex removes oil, grease, ingrained dirt, water-based paint and old layers of wax.  Applications range from paths and patios, pool surrounds and cladding, to floors, countertops, wall tiles and hearths.  For general cleaning, it is diluted with water 1:10 and applied with a mop or cloth; surfaces are then wiped with a clean, damp cloth. At this dilution, Grimex has a coverage rate of approximately 50m² per litre. For more severe staining - and to strip surfaces during renovations and before resealing - it is used at a 1:3 dilution or neat, and surfaces are agitated before rinsing.

Terracotta is a very wholesome, natural material.  It’s basically clay that’s dried in the sun or fired in an oven and the name literally means ‘baked earth’.  Along with its beautiful burnt orange colouring, terracotta provides a robust finish that’s versatile and easy to look after.  However, like many natural materials, it is porous and can easily become stained.  There are two ways of protecting terracotta tiles – either by applying a synthetic sealer or the more traditional method using Boiled Linseed Oil and wax.

The two ways to protect terracotta: 

Synthetic Sealers

Synthetic or acrylic sealers are the easier option in terms of application.  They’re generally faster to apply and they create a surface seal with a degree of sheen.  LTP options include Colour Intensifier & Stain Block – a non-film forming impregnating sealer that fills the pores of the tile.  This treatment can be used on its own, for a natural finish, but we recommend a follow-on application of LTP Ironwax, to make tiles easier to mop and keep clean. LTP Ironwax is a film forming sealer that creates a self-shine surface layer; it is applied with a sponge or paintbrush to textured tiles, or with a cloth or pad to honed tiles, and no buffing is required.  Three coats are generally sufficient – with an hour between each application – but a higher sheen can be created with additional coats, up to a maximum of six.

LTP Colour Intensifier is also applied with a sponge, pad, cloth or brush and left for 60 minutes between coats.  For a strong colour tone and for more absorbent material, further coats can be applied after 60 minutes.  All terracotta’s have different levels of porosity, so there is no specific recommendation regarding number of coats.  The best advice is to apply the sealer, as instructed, until the tile is fully saturated, ie., an even layer of sealer is still visible on the tile surface 30 minutes after application. The tile should be left to dry and then gently buffed to remove any excess, if any remains.

Before any treatment is applied, tiles should always be cleaned thoroughly, to remove all dirt and grout residue.  For ongoing cleaning and aftercare, use LTP Floorshine, which reinforces protection as it cleans.

The Traditional Method

Although the traditional treatment route takes longer, it does create a more characterful aesthetic and it gives the terracotta longer-term mechanic strength, by effectively filling the pores. This YouTube video show installation and treatment of hand-made light terracotta, with a further demo below.

https://youtu.be/r4MCx7DUpAQ

During the first stage of treatment – and following a thorough clean –  LTP Boiled Linseed Oil is applied with a brush until the tiles are saturated. You should allow at least 12 hours between each coat to ensure that the oil thoroughly cures. Most terracotta will take 1-2 coats to reach saturation but some tiles, especially handmade terracotta, may take 4-5 coats. The tiles should then be left to dry for at least 24 hours.

During the second stage of treatment, wax is applied. This provides a resilient protective layer against water, dust and dirt, as well as extra sheen.  LTP treatments include LTP Clear Wax – a natural, clear finish – and medium brown LTP Antique Wax which deepens the colour tone and, in many cases, instantly ages the appearance of the terracotta. Both treatments have a soft paste consistency. They are applied with a cloth and the surface is then buffed.  The traditional treatment method can also be used to restore older floors, once the tiles have been thoroughly cleaned and any existing sealant removed.  

https://youtu.be/FonA7VfIIh8

For ongoing cleaning and aftercare, we recommend LTP Waxwash – a gentle, pH neutral cleaner which contains a trace of Linseed Oil to reinforce protection.

For more advice on floor maintenance and protection, please contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit http://www.ltp-online.co.uk

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For further media information and photography, please contact:

Angela Fitzhugh PR Ltd at angie@afpr.co.uk or tel. +44 (0)1579 673026.

Being a porous material, concrete is susceptible to moisture.  It, therefore, needs to be correctly sealed, preferably with a water-based, non-film forming product that will allow the floor to breathe.  This is important, because air or moisture trapped below the surface can cause a variety of issues:

Air trapped below a heavily and poorly applied film-forming sealer can result in visible application lines and the formation of small bubbles on the surface that leave visible circles when dry.

Using a spirit-based impregnating sealer on a concrete surface that isn’t fully free of moisture can give polished concrete a cloudy opaque appearance when dry; oil and water do not mix well! This is very difficult to reverse when it happens and normally results in a complete mechanical re-polishing of the surface to remove it.

Many water-based sealers for concrete are ‘finishers’ rather than impregnators and do not breathe as well as non-film forming impregnating sealers. If applied to concrete that is still damp, any trapped moisture can then cause the concrete to effervesce and leave a white powdery residue on the surface.

Protecting the surface

As concrete is porous, it’s important to seal the surface before applying a finishing treatment. This effectively fills the exposed pores and creates a barrier against water, oil and grease.  Choosing a water-based impregnator sealer, like LTP Mattstone H2O, provides multiple performance benefits, in addition to environmental and safety features.  Being non-film forming, it allows the surface to breathe. It is also non-yellowing, UV resistant and its water-based formulation means that it can be applied over residual moisture. 

During application, LTP Mattstone H2O is spread out evenly using a sealant applicator.  Once absorbed, a second coat is applied 30 minutes after the first.  The surface is then dry buffed, using a machine or white pad, 45 minutes after application of the final coat.  The concrete can be walked on after two hours and should be left to dry for 24 hours before applying any final finishing seal. Surfaces may look slightly darker after sealing, and sometimes patchy, especially if the sealer is applied when the floor is still slightly damp. This is caused by retained moisture and is normal.  Once dry, the concrete will return to its original colour.

Concrete toppings and polished concrete method statement

The final finishing seal

To further protect and enhance the surface, we recommend a finishing coat of LTP Glaze Protector, once the sealer is dry after 24 hours.    The Glaze Protector is a low odour VOC-free treatment that’s highly resistant to wear and stains.  Binding qualities also help to prevent dusting and degradation of the concrete surface.  After application with a sealant applicator pad, the surface should be left to dry for a minimum of 45 minutes, before applying up to two further coats in the same way, until the desired finish is achieved.  The surface should not be rubbed, buffed or walked on for at least 12 hours after application.

Examples of polished concrete after application of Glaze Protector

Like LTP Mattstone H2O, the Glaze Protector may make surfaces appear slightly darker after application but they will return to their original appearance. In high traffic areas, an annual top-up coat of protection is recommended.

Once cured, both treatments are completely inert, so they’re considered to be food safe for catering and hospitality environments.

Ongoing maintenance

For daily/weekly cleaning, we recommend LTP Floorshine; an eco-friendly, rinse-free non-film forming cleaner that cleans and protects.  Regular use helps to reinforce the protection provided by LTP Glaze Protector and renovates dull looking surfaces. Floorshine is diluted in water and can be used to clean floors manually and mechanically. Surfaces should be left to dry naturally before they’re walked on.  If Floorshine is used for aftercare, then top up coats of Glaze Protector can be applied without the need to strip the surface back.

For more support and advice, browse the LTP blog, visit and subscribe to LTP TV on YouTube or contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

Why does grout stain so easily?

Most tiles are grouted with cement-based formulations. These are generally water resistant but not water proof and this makes the grout joint vulnerable to staining. Moisture carrying particles of dirt can penetrate the joint, causing deep staining. Cleaning can also compound the problem. When a surface is mopped or wiped, dirty water and residue often pools or is caught in the grout line and as cement-based grout is relatively porous, dirt is absorbed into the joint. A white joint will very quickly discolour, particularly in high traffic areas or floor areas without suitable door mats to trap dirt.

How do you protect grout joints?

Application of a quality protector, immediately after installation, will prevent any dirt, grime and other organic matter – including food, drink, bathroom products, etc - from penetrating beyond the surface. It won’t make the grout self-cleaning; it will still need to be cleaned, but it will make it much easier to clean off any dirt and grime.  Even if you are sealing the whole tile surface – in the case of a stone or polished porcelain installation - it is still worth applying a grout protector, as it will provide more targeted protection.

For fast and easy treatment, we recommend LTP Grout & Tile Protector.  To apply, hold the cannister approx. 20 cm from the tile and spray along the joints. A 25 square metre area can be protected in just 20 minutes. Overspray onto most tile surfaces will dry and be invisible. If your tiles have a polished finish or glossy glaze any visible excess can be removed by wiping the surface with a microfibre cloth.

Here's a second video, with more information about the treatment from LTP's Mark Atkins:

Protecting tiles before grouting

Some tiles will benefit from protection before and after they are grouted, including matt porcelain and handmade encaustics.

Matt porcelain tiles don’t need to be sealed but as they tend to be heavily textured – especially those used outdoors – grout can easily become lodged in the surface. This is a particular issue when brush-in jointing compounds are used; resins accumulate in the tile’s high/low surfaces and once congested, the texture is lost along with the tile’s slip resistance. A quality barrier, like LTP Porcelain Tile Protector, applied before grouting, will help protect tiles from staining and make the removal of residues easier. It will promote an easy installation, as it will improve/increase grouting working times, and a final coat after installation will make ongoing maintenance easier.

Authentic encaustic tiles are made from a mixture of natural marble powder, cement and coloured pigments which create a surface pattern above a sand and cement backing. They tend to be very porous and can easily become stained.  They will need to be sealed before and after grouting.  Our blog – Protecting encaustic tiles – runs through the steps.  

Both matt porcelain and encaustic installations will also benefit from the added protection of LTP Grout & Tile Protector, applied after installation.

Restoring older grout joints

Grout lines can easily be restored in older installations by deep cleaning the joint and applying a protector. For acid resistant tiles, we recommend treatment with LTP Grout Stain Remover; it contains a rapid action cleaning agent which removes cement, limescale and grout residue.  For acid sensitive surfaces, including limestone and marble, we recommend LTP Grimex.  To target cement residues, salts and efflorescence, the range also includes LTP Cement Grout & Salt Residue Remover, which can be used on all types of unpolished natural stone, as well as porcelain and glazed ceramics.

Ongoing maintenance tips

Once your grout joint has been protected, avoid strong alkali, acid or bleach-based tile/grout detergents. These types of cleaners can affect the surface of the grout, making it slightly coarser and more likely to hold onto dirt.  Also, avoid homemade ‘cleaning hacks’.  Many people recommend mixtures of vinegar, soda crystals, bicarbonate of soda, water and lemon to make all-purpose cleaners and these ingredients are either very acidic or have high alkaline levels.  A lot of natural materials, like limestone and marble, are very sensitive to acid and alkaline, as are grout joints. All of these can damage the natural tile and the grout joint.

A good quality pH-neutral detergent will keep surfaces clean and help ensure that the grout protection is not compromised. Neutral spray cleaner - LTP Multpurpose Cleaner - is ideal for kitchens and bathrooms.  Other options include LTP Porcelain Tile Cleaner and LTP Stonewash.

For more advice, visit our blog and LTP TV which includes video demos on all aspects of cleaning, sealing and renovation.  Also, contact LTP’s Technical Team on tel. 01823 666213, and email info@ltp-online.co.uk

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For further media information and photography, please contact:

Angela Fitzhugh PR Ltd on email enquiries@afpr.co.uk or tel. +44 (0)1579 673026



If, like us, you’ve seen lots of articles on deep cleaning, you may be tempted to try out some of the popular ‘cleaning hacks’.  Many people are recommending mixtures of vinegar, soda crystals, bicarbonate of soda, water and lemon to make disinfectants, all-purpose cleaners and limescale removers.  The problem is that lots of natural materials, like limestone and marble, are very sensitive to acid and alkaline.  Vinegar and lemon are both very acidic - and soda has high alkaline levels.  Both can erode or ‘eat away’ natural surfaces like stone floors, tiles, countertops and mosaics - and damage any protective sealer that’s been applied.  These surfaces should always be cleaned with a gentle pH-neutral product.

It’s useful to think about the pH scale before choosing – or making – a cleaning product. Running from 0-14, anything that scores a 7 is considered neutral and safe to use on all surfaces. Anything below a 7 is considered acidic and anything above a 7 is considered alkaline.  Acidic solutions are best at removing calcium, rust and other mineral ‘non-organic’ stains. Lemon and vinegar score around 3 on the pH-scale and toilet bowl cleaner is the most acidic, with a pH of 1-3. At the alkaline end of the scale, you’ll find bleach and many tile cleaners; they have a high pH value of 11-13 and are best at removing ‘organic’ dirt, grease and oil.  

Surprisingly, many ‘toxic-free’ products can also cause damage to natural surfaces. Look closely at the label on a leading anti-bacterial all-purpose cleaner and it states that it isn’t suitable for natural stone because it is acid-based.  It’s always worth reading the small print.  

Another common misconception is that an extra dose of the right product will do an even better job.  But this can actually create problems. Using a lower dilution may mean that a surface needs to be rinsed; if it isn’t, the residue may form a film on the surface, which could make future cleaning more difficult.  

LTP’s range includes lots of different products for tackling specific jobs – and removing stains – as well as pH-neutral cleaners that are safe and all purpose.  LTP Stonewash is a great all-rounder, if you’re looking for a combined bathroom and kitchen cleaner for all types of tile and stone.   The LTP website also includes various Video Aids and others resources to help you Identify your surface and calculate how much product you need.

To see the whole range, find our more and stock up with the right product, visit https://www.ltp-online.co.uk, or contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

About Blue Lias Limestone

Blue Lias Limestone dates back to the late Triassic and early Jurassic period, some 195-200 million years ago.  It is named after quarrymen’s dialect for layers – ‘Lias’.  The stone is made up of layers of limestone and shale, and it has a distinct blue/grey tinge due to its fossils, ores and iron content.  It’s mainly found in Somerset and Dorset. 

The Renovation – cleaning

Located within a Grade II Listed property in Sparkford, the Blue Lias limestone was laid throughout an area totalling around 100m^2.  It included the side entrance, kitchen and a narrow corridor leading into the main open hall area, including the dining area and lounge. 

LTP advised the Silex UK team on the best cleaning and protection method, in view of the stone’s age and environment.  Being a historic installation, the floor was laid directly onto the earth, without a damp-proof membrane.

Before the floor was cleaned, Alastair Niddrie from Silex carefully removed salt, flaky residue and paint deposits by hand.  LTP Grimex was then used to clean the limestone and remove greasy residue.  Grimex is an intensive cleaner that removes oil, grease, ingrained dirt, water-based paint and old layers of wax.  It’s safe to use on all types of natural stone and it can be used at different dilutions to suit application.  Alastair used a 1:3 dilution, applying the cleaner to the flagstones with a broad brush.  The treatment was left to react for 5-10 minutes, during which time the floor was kept wet with additional solution.  It was then agitated with a brush, residue was removed and the surface was rinsed thoroughly with clean water.

LTP Solvex – an intensive cleaner/stripper - can also be used alongside Grimex to remove oil-based paint, wax, oil, silicone, acrylic, polyurethane sealer and residual epoxy grout. Like Grimex, it has a non-caustic formulation and is safe to use on natural stone. 

The Renovation – Phase II - protection

Flagstone floors are often enhanced and protected using wax-based treatments. This method cannot be used on a floor without a damp-proof membrane, as it blocks the stone’s porosity and the passage of moisture and salts through the limestone. If the stone isn’t able to breathe, it will eventually break up.  Walls can also be compromised, as moisture looks for other ways to escape.

At the property, Silex used LTP’s ECOPROTEC Colour Enhancing Stone Sealer.  A water-based impregnating treatment, the sealer enhances and protects, strongly repelling water, oil and grease. It was applied after the intensive cleaning and before re-pointing. A further coat was applied 24 hrs after the stone had been cleaned up to remove any residual grout. The final coat covered the re-pointed joints as well.

ECOPROTEC Colour Enhancing Stone Sealer is non-film forming so it allows the surface to breathe and helps to reduce efflorescence.  The sealer is applied following a thorough clean and after the floor has been left to dry for 24 hours.  To ensure a good application into the uneven surface, Al applied the treatment with broad paint brush.  Once cured, the floors were buffed using a rotary machine fitted with white pads; this gave the surface a beautiful lustre. The flagstones were then polished by hand with woollen pads. 

To find out more about the specification and LTP treatments, please visit http://www.ltp-online.co.uk, or contact LTP on tel. 01823 666213 and email info@ltp-online.co.uk

To contact Silex UK, please visit https://silexuk.com, tel. 0207 504 1070 (London Office) or 01225 650122 (Bath Office) or email info@silexuk.com

ends  -

For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01579) 673026 or email angie@afpr.co.uk

Different types of algae

Algae comes in different forms and often causes a green film or powdery deposit on pavers.  The term algae also includes cushion-like moss; Liverwort, which is a flat green growth with tiny leaf-like lobes, and Lichen, which is more crust-like and can also be yellow or orange. Jelly-like growths are also common; they’re often black or dark green and these are caused by a cyanobacteria called Nostoc.  None of these growths are hazardous - infact, lichen is particularly common in areas with clean air, so its appearance can be a positive sign – but slippery hard surfaces can be.

Another common problem is black spot – a speckle-like deposit that can be black or white.  Black spot is a dust-like lichen that originates from plants and trees. It colonises on pavers, sending tendrils or ‘hyphae’ down into any cracks or porosity, searching for nutrients. It takes about 2-3 years to become established below the surface and it creates a slippery residue on the surface of pavers. 

Addressing problem areas

Why water doesn’t work

A pressure washer and often a dose of household cleaner is a common go-to solution for slippery pavers.  However, excessive water only makes conditions even better for algae to flourish and pressure washing can damage the surface of the pavers, any sealer applied and it will loosen grout.  Water also won’t target hyphae or filaments anchored into place below the surface.   A specialist approach is necessary to effectively remove residue and microspores below the surface; any treatment used needs to break-down the slippery residue: to have a bleaching action to restore the colour of the paver, and to target any growth below the surface. 

Care should be taken in selecting a suitable treatment.  If a solution is acidic, it will damage acid sensitive material and erode the grout joint.  We recommend LTP Black Spot & Algae Remover which can be safely used on all types of natural stone, concrete, brick and porcelain.  This treatment removes all types of organic residue, slippery matter and stains, breaking down hyphae below the surface, as well as preventing regrowth.  When applying the Remover, it’s also important to treat the whole area of paving, for a uniform appearance.

Removing large deposits and applying LTP Black Spot & Algae Remover

Before washing pavers, any large, mossy deposits should be removed.  A long-handled block paving brush is a useful tool.  The whole area should then be swept clean to remove other residue, dirt and leaves.  

LTP Black Spot & Algae Remover should be applied neat to swept pavers, using a watering can or light pressure garden spray, where it fizzes during treatment.  It should be left to act for 2-4 hours and surfaces then hosed with clean water.  The solution can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.  See a video aid on the product page.

After treatment, it’s worth protecting the surface; we recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector, for matt porcelain pavers.  Both will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae.

For more support and advice, browse the LTP blog, visit and subscribe to LTP TV on YouTube or contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

LTP Solvex is an intensive cleaner or stripper.   A non-caustic formulation, it removes stubborn residue – including congealed fat and wax - by softening deposits so that they can be easily removed from the surface without causing any damage. It can be used on all natural and engineered stone, including sandstone, slate, travertine, terracotta, quarry tiles and porcelain.  LTP Grimex is the ideal partner to Solvex and is used to wash down the surface after treatment, before a final rinse.  

It’s really easy to apply both treatments.  LTP Solvex is poured neat, directly onto stains.  It should be generously dapped onto problem areas with a cloth or brush; always protect hands with suitable gloves.  The solution is then worked in manageable areas – as far as you can reach without treading into the cleaner.  The solution is left to work for up to 30 minutes; during this time, more should be applied if it starts to dry out.  Using a coarse, stiff brush or LTP’s Black Emulsifying Pad, the softened residue is then removed from the surface.  The process should be repeated if any staining remains. 

To wash down the pavers after treatment, LTP Grimex is diluted 1:3 with water and applied with a cloth, mop or brush.  The surface should then be rinsed with plenty of water and left to dry. 

If you’re removing residue from a previously sealed surface – or want to seal an untreated patio to protect it from future stains - a new coat of sealer can be reapplied after cleaning and once the surface is sufficiently dry; this may take a minimum of 24 hours.  We recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

The difference in these two treatments comes down to the active ingredients.  Those used in LTP Porcelain Tile Protector are very different from those in LTP MPG Sealer H20.

LTP Porcelain Tile Protector is a barrier treatment, rather than a sealant. It's designed for use on textured, matt porcelain tiles. The carrier within the Protector is mildly acidic. This allows for deeper penetration into the fissures of textured porcelain tiles, where it then dries and leaves the active ingredients behind. As they dry, they cross link within the low points of the glaze. This provides protection against penetration from cement and resin-based grouts, making the removal of any residues much easier. The Protector is completely invisible once cured, so it doesn’t alter the appearance of the porcelain. This treatment is primarily used as a pre-grout solution, but it can also be applied to help assist with ongoing cleaning and aftercare, especially on external 22mm porcelain paving.

LTP MPG Sealer H20 is a completely different formula.  It is only suitable for use on mechanically polished tiles, so tiles that have been polished using a mechanical process in order to make them very shiny. These include marble, porcelain, polished glazed porcelain and granite.  

The action of polishing porcelain exposes capillaries, whilst polishing natural stone closes the capillaries.  However, both remain porous and exposed. The result, in each case, is lots of microscopic pin holes that are very similar in size. If the surface of the tile isn’t protected, grout and spillages will penetrate quite easily and stain the tile. MPG Sealer H2O has similar anti-stain base ingredients as Mattstone H20 but in addition it includes a blend of nano waxes that following application and drying are polished into the surface either mechanically or by hand. This is a key part of the application process.  Polishing forces the nano wax into the open pores within the polished surface, giving it an enhanced smoother finish.

In contrast, the actives in Porcelain Tile Protector are too large and will not penetrate a polished surface as efficiently, so they will not work well on this type of surface.  Equally, MPG Sealer H2O cannot be used on textured porcelain surfaces, as it is difficult to buff following application. This can result in a micro film that remains following application and turns white/opaque when exposed to moisture.

For more advice, visit https://www.ltp-online.co.uk.  To contact LTP for more expert advice, tel. 01823 666213 or email info@ltp-online.co.uk

End of winter clean

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.  A blast with a jet wash may seem like a quick and easy way to clean pavers but it will only wash dirt off the surface. Use of excessive amounts of water can exacerbate staining and slip issues and jet washing can also loosen grout, erode a stone surface and damage any protective sealant applied. A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity, and will also help to prevent regrowth of algae and other organic material.

Before cleaning, remove furniture, pots and other objects, and sweep the pavers to remove all leaves and residue.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your pavers are stained with slippery black spot, lichen, moss and algae, they will benefit from a targeted treatment with LTP Blackspot & Algae Remover.   Designed to break down microspores and black spot ‘hyphae’ before they colonise, LTP Blackspot & Algae Remover is acid-free, so it’s safe to use on acid-sensitive stone.  However, it does contain a bleaching action to remove stains, so test first on an inconspicuous area.  

How to apply LTP Blackspot & Algae Remover:

1. Remove furniture and other items from the area to be treated.
2. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
3. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
4. Hose off thoroughly with clean water.  

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during next winter's freeze and thaw cycle.

Added protection

If your pavers haven't been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush. It can be applied over residual moisture and will protect pavers from moisture, stains, weathering and efflorescence.  It’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more, please visit http://www.ltp-online.co.uk or visit LTP TV on YouTube to access our library of demo videos.

For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

More about the materials

Although marble, granite and quartz have similarities, they are quite different in their make-up.  Marble and granite are both natural stones.  Marble is a metamorphic rock that forms when limestone is subjected to the heat and pressure of metamorphism.  It is made up of recrystallized carbonate minerals, commonly calcite or dolomite.  Granite is a coarse-grained intrusive igneous rock that forms from magma (with a high content of silica and alkali metal oxides) that slowly cools and solidifies underground. It is mostly composed of quartz, alkali feldspar and plagioclase. Quartz worktops are engineered from ground quartz – a hard, crystalline mineral that’s made up of silica – and mixed with resin.  Some quartz countertops also include other stone aggregates, like granite and marble. 

Different performance features

Marble and granite are both acid sensitive.  However, granite is more robust and marble, being more porous, is vulnerable to abrasion.  Quartz is generally less sensitive to acid, unless it includes acid sensitive stone. However, it has a low resistance to thermal shock, due to its resin content, so it can scorch easier. Care should be taken to use heat resistant mats, coasters or trivets to protect the surface.

To look after each material, we recommend our worktop care kits:  LTP Stone Care Kit, Granite Care Kit and Quartz Care Kit.

Which surfaces need to be sealed?

Marble and granite should always be sealed to protect them from stains, whereas Quartz doesn’t generally need to be sealed.  Our Stone Care Kit and Granite Care Kit include three treatments - to deep clean, seal and maintain - and our Quartz Care Kit includes two, to deep clean and maintain. 

The deep cleaning treatment should always be used to remove residue before sealing marble or granite.  If dirt and residue is left in place, it will become sandwiched between the stone and the sealer, creating a patchy finish.  

Deep cleaning

How to apply LTP Stone Clean/Granite Clean/Quartz Clean

Shake the can. To apply the foam treatment, just point and spray in a sweeping action, 15-20cm from the surface.  Leave for 5-10 minutes and then agitate the surface with a white emulsifying pad and a little water. Rinse with a clean sponge and clean water. Repeat the treatment if the stone is very stained.

Sealing

How to apply Stone Seal/Granite Seal

As above, shake the can and point & spray in a sweeping action, 15-20cm from the surface. A little water can be dropped onto the surface 30 minutes after application, to test the protection.  If it’s absorbed, a second or third coat can be applied to give maximum protection. The surface will be fully dry within 2-3 hours of the final application, and fully cured after three days.  On smooth, polished surfaces, any visible excess should be removed five minutes after application, with an absorbent cloth.  The surface should be buffed with a soft lint-free cloth.  Always ensure that rooms are well ventilated before applying the treatments.

Ongoing care

All three surfaces – marble, granite and quartz - should be maintained with a gentle, pH-neutral cleaner.  General surface cleaners should be avoided, as they are often quite acidic; even many of the eco brands aren’t recommended for acid sensitive stone.  This is also the case for quartz, as whilst it is generally more resistant, strong chemicals can still cause staining and dull a polished surface.

How to apply LTP Stone Care/Granite Care/Quartz Care

Shake the can, hold 15-20 cm from the surface and spray a small amount. Wipe over with a damp cloth. Rub until dry using a dry micro-fibre cloth or similar absorbent towel to finish. 

During each stage of treatment, rooms should be well ventilated. For more advice on all of the kits and individual treatments, visit https://www.ltp-online.co.uk/cat/worktop-care.  To contact LTP for more expert advice, tel. 01823 666213 or email info@ltp-online.co.uk

The correct cleaning product

Limestone is sensitive to acid, so it should be cleaned with a pH-neutral detergent.

General household cleaners should be avoided – they tend to be acidic and will etch the stone and the grout joint, and will damage any protective sealer that has been applied.  Acid-based products will also dull a polished surface. Surprisingly, many eco-treatments aren’t suitable for limestone; they may be kinder to the environment but they can still damage natural materials as they often contain acidic ingredients used to boost limescale and soap scum removal. To deep clean a limestone floor, we recommend LTP Grimex.  As the name suggests, Grimex removes grime and stains, including oil, grease, ingrained dirt and wax.  It’s safe to use on all types of natural stone, as well as porcelain and ceramics tiles, and it can also be used to deep clean marble and granite worktops.

How to use LTP Grimex

Firstly, sweep or vacuum the floor to remove dust and loose dirt.

For areas that are slightly grubby, dilute one part of Grimex to ten parts of warm water.  Apply with a cloth or mop and rinse with clean water.  

For dirtier surfaces, use a stronger 1-3 dilution and agitate the surface with a brush.  Let the solution act for 5-10 minutes, mopping with additional solution to keep the tiles wet, and agitate again before mopping up and rinsing thoroughly with clean water.

For built-up grime and stubborn stains, Grimex can be used neat and then thoroughly rinsed.  

Tiles that have been deep cleaned with a low dilution or neat solution may need to be resealed.  The easiest way to see if a sealer is still performing is to carry out a water test:

1. Drop a bead of water onto the surface.
2. If it sits in place, it is well sealed. If the water quickly soaks into the tile or makes the surface look darker, then it needs resealing.

To top up protection, choose a suitable sealer from LTP’s range and carefully follow application directions.

Cleaning methods & materials to avoid

Steam cleaning:          

This cleaning method is not recommended. Super-heated steam can damage any sealer applied and compromise the protection. It can cause ‘spalling’ or flaking of the limestone.

Natural cleaning hacks:

Homemade cleaning solutions are very popular but they are not suitable for limestone as they are generally acidic.  The most common culprits are vinegar, lemon and baking soda. Bleach should also be avoided.  Although it is an alkaline rather than an acid, it is still too harsh for limestone. 

Ongoing maintenance

Once the floor has been deep cleaned, we recommend LTP Waxwash for regular day-to-day cleaning. Waxwash is a gentle, pH neutral detergent and it can be used on all types of natural and artificial stone. Just dilute 2-3 capfuls (or 5 for dirtier surfaces) into a bucket of warm water, mop and allow to dry.

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

LTP Solvex is an intensive cleaner or stripper.   A non-caustic formulation, it removes stubborn residue – including congealed fat and wax - by softening deposits so that they can be easily removed from the surface without causing any damage. It can be used on all natural and engineered stone, including sandstone, slate, travertine, terracotta, quarry tiles and porcelain.  LTP Grimex is the ideal partner to Solvex and is used to wash down the surface after treatment, before a final rinse.  

It’s really easy to apply both treatments.  LTP Solvex is poured neat, directly onto stains.  It should be generously dapped onto problem areas with a cloth or brush; always protect hands with suitable gloves.  The solution is then worked in manageable areas – as far as you can reach without treading into the cleaner.  The solution is left to work for up to 30 minutes; during this time, more should be applied if it starts to dry out.  Using a coarse, stiff brush or LTP’s Black Emulsifying Pad, the softened residue is then removed from the surface.  The process should be repeated if any staining remains. 

To wash down the pavers after treatment, LTP Grimex is diluted 1:3 with water and applied with a cloth, mop or brush.  The surface should then be rinsed with plenty of water and left to dry. 

If you’re removing residue from a previously sealed surface – or want to seal an untreated patio to protect it from future stains - a new coat of sealer can be reapplied after cleaning and once the surface is sufficiently dry; this may take a minimum of 24 hours.  We recommend LTP External Stone Sealer for natural stone and barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Made from natural clay, terracotta is dried in the sun or fired in an oven; the name literally means ‘baked earth’.  Along with its beautiful burnt orange colouring, it provides a robust finish that’s versatile and easy to look after. However, like many natural materials, it is porous and can easily become stained.  There are two ways of protecting terracotta tiles – either by applying a synthetic sealer or the more traditional method using oil and wax; this was the method adapted by Eli from Parish Stone who used LTP Boiled Linseed Oil and Antique Wax to create the stunning golden-toned vintage finish.

Treating terracotta the traditional way

Using the traditional method to treat terracotta takes longer but it does create a more characterful aesthetic.  It also provides longer-term mechanical strength, by effectively filling the pores within the terracotta.

During the first stage of treatment – and following a thorough clean –  LTP Boiled Linseed Oil is applied with a brush until the tiles are saturated. You should allow at least 12 hours between each coat to ensure that the oil is completely cured. Most terracotta will take 1-2 coats to reach saturation but some tiles, especially handmade terracotta, may take 4-5 coats. The tiles should then be left to dry for at least 24 hours.

During the second stage of treatment, wax is applied. This provides a resilient protective layer against water, dust and dirt, as well as extra sheen.  LTP treatments include LTP Clear Wax and medium brown LTP Antique Wax – used at the greenhouse – which deepens the colour tone and, in many cases, instantly ages the appearance of the terracotta. Both treatments have a soft paste consistency. They are applied with a cloth and the surface is then buffed.  

As well as new installations, this treatment method can also be used to restore older floors, once the tiles have been thoroughly cleaned and any existing sealant removed.  For ongoing cleaning and aftercare, we recommend LTP Waxwash – a gentle, pH neutral cleaner which contains a trace of Linseed Oil to reinforce protection.

For more advice on floor maintenance and protection, please contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit www.ltp-online.co.uk

ends  –

For further media information and photography, please contact:

Angela Fitzhugh PR Ltd on email enquiries@afpr.co.uk or tel. +44 (0)1579 673026

Unlike traditional sand and cement grouts, resin-based products combine an epoxy resin with a filler.  This provides many benefits, including greater bond strength, durability and resistance to water, stains and chemicals.  However, brush-in resins can be more difficult to work with and can easily stain tiles.  

How to protect new installations

If you’re installing a new porcelain patio with a resin grout, staining can be avoided by using a barrier treatment to protect the tile.  We recommend LTP Porcelain Tile Protector, which provides a number of benefits:  It prevents grout and resins from taking hold; it makes the removal of any residues much easier, should they occur and it improves and increases grout working times. A further coat applied after installation will make ongoing maintenance easier too.

Before the Protector is applied, the tiles should be cleaned and left to dry overnight.  To apply the protector:

1. Use a broad paint brush or light pressure sprayer. 
2. Leave the treatment to dry for 30 minutes before applying a second coat. 
3. Leave the treatment to cure for a minimum of one hour before grouting or pointing. Once the grout is dry, and all residues have been removed, a further coat of Protector can be applied to the tiles and the grout joints. This helps with future cleaning and aftercare.

How to remove resin stains from existing installations

To remove epoxy resin grout residue and white haze from existing installations, without damaging the joint or the paver, we recommend LTP Solvex – a non-caustic intensive cleaner/stripper.  Solvex helps to soften the resin residues, allowing for easier removal.  Application is normally followed by a final wash with LTP Grimex cleaning solution before rinsing down.

How to use LTP Solvex & Grimex:

1. Pour Solvex directly onto the pavers. 
2. Apply generously by dabbing onto stains with a cloth or brush. NB. Always wear gloves to protect your hands.
3. Work in manageable areas; normally in strips as far as you can reach without treading into the solution.  Do not brush out. 
4. Leave for up to 30 minutes, but don’t allow the solution to dry out. If it starts to dry out within this time-frame, apply more solution. 
5. Use a coarse, stiff brush or LTP Black Emulsifying Pad to remove the softened coating from the surface of the paver. Repeat this process if some staining remains. 
6. Wash down the pavers with LTP Grimex, diluted 1:3 with water.
7. Rinse with plenty of water and leave to dry.

As well as tackling brush-in resin grout, LTP Solvex can be used to remove wax, oil, silicone, acrylic and polyurethane sealer from porcelain.  It can also be used on stone, travertine, terracotta, slate, sandstone, flagstones, quarry tiles and glazed ceramic.  If you’re removing residue from a previously sealed stone tile, a sealant should be reapplied after cleaning and when the surface is sufficiently dry; this may take a minimum of 24 hours.

See the bottom left-hand tile, where residue has been removed with LTP Solvex.

A good ongoing maintenance regime

To thoroughly clean a porcelain patio, we recommend LTP Grimex. Grimex can be used at different dilutions depending on the severity of staining.  Tiles are washed, using a brush or garden broom, and rinsed with clean water.   

For periodic cleaning, you can also use LTP Porcelain Floor Tile Cleaner.  This detergent can be used inside and outside, so it’s ideal for continuous surfaces installed through bi-fold doors.  Just dilute 2 or 3 capfuls in a bucket of warm water – or 5 on dirtier floors – wash the floor and allow to dry.   This product doesn’t require rinsing. 

To remove other stains from outdoor slabs, solutions include LTP Blackspot & Algae Remover, LTP Rust Stain Remover and, for efflorescence, LTP Cement Grout & Salt Residue Remover.  All three treatments are safe to use on porcelain and stone tiles.   

For more expert advice and information, contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

Establishing an outdoor regime

Path and patios will benefit from a thorough clean every couple of months or so – ideally, twice during the winter and three times during late spring/summer.  Surfaces that are regularly cleaned will be far easier to keep clean.  Regular cleaning of inside-to-outside surfaces, like those that run through bifold doors, will also help maintain a seamless aesthetic.  

Before embarking on a late summer clean-up, identify any furnishings or materials that aren’t winter or frost proof; these will need to be packed away or covered up before the weather turns. It’s worth emptying and stacking pots as soon as flowers are spent to make patio maintenance easier; some might need to be stored away if they’re not frost-resistant.  Pavers can then be swept to remove dirt, debris and fallen leaves.  

It’s worth sweeping up leaves on a regular basis, as they can quickly decay and cause a slip hazard. Certain leaves, like sycamores, are a particular menace; aphids that live on the surface of the leaves excrete a sugary substance that provides a food source for algae.  The combined sugar and bacteria leaves a telltale black spot stain and sometimes whole leaf prints.    

A note about pressure washing:

A blast with a jet wash may seem like a quick and easy way to clean pavers but it will only wash dirt off the surface.  Over the autumn and winter, use of excessive amounts of water can exacerbate staining and slip issues.  Jet washing can also loosen grout, erode a stone surface and damage any protective sealant applied.  A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity, and will also help to prevent regrowth of algae and other organic material.

Cleaning pavers – recommended products & methods

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.   This treatment is also especially effective at removing leaf stains, including those left by Sycamore leaves. Before cleaning, remove furniture, pots and other objects.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your patio is prone to black spot, lichen, moss and algae, we recommend periodic treatment with LTP Blackspot & Algae Remover which will break down microspores and black spot ‘hyphae’ before they colonise.  Late summer is a good time to carry out the first treatment. LTP Blackspot & Algae Remover is acid-free, so it’s safe to use on acid-sensitive stone, but it does contain a bleaching action to remove stains.  So, as before, test first on an inconspicuous area.  Then, remove furniture and other items from the area to be treated.

How to apply LTP Blackspot & Algae Remover:

1. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
2. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
3. Hose off thoroughly with clean water.  

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during the freeze and thaw cycle of winter.

Adding in protection

If your patio hasn’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  They are also water-based, so can be applied over some residual moisture.  As a rule of thumb, it is safe to apply a treatment provided that no rain is forecast for 24 hours, either side of application. 

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush, as shown in the Video Aid.  It will protect pavers from moisture, stains, weathering and efflorescence, and it’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase grout working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more about patio maintenance, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Most tiles are grouted with cement-based formulations. These are generally water resistant but not water proof and this makes the grout joint vulnerable to staining. Moisture carrying particles of dirt can penetrate the joint, causing deep staining. Cleaning can also compound the problem. When a surface is mopped or wiped, dirty water and residue often pools or is caught in the grout line and as cement-based grout is relatively porous, dirt is absorbed into the joint. A white joint will very quickly discolour, particularly in high traffic areas or floor areas without suitable door mats to trap dirt.

How do you protect grout joints?

Application of a quality protector, immediately after installation, will prevent any dirt, grime and other organic matter – including food, drink, bathroom products, etc - from penetrating beyond the surface. It won’t make the grout self-cleaning; it will still need to be cleaned, but it will make it much easier to clean off any dirt and grime.  Even if you are sealing the whole tile surface – in the case of a stone or polished porcelain installation - it is still worth applying a grout protector, as it will provide more targeted protection.

For fast and easy treatment, we recommend LTP Grout & Tile Protector.  To apply, hold the cannister approx. 20 cm from the tile and spray along the joints. A 25 square metre area can be protected in just 20 minutes. Overspray onto most tile surfaces will dry and be invisible. If your tiles have a polished finish or glossy glaze any visible excess can be removed by wiping the surface with a microfibre cloth.

Protecting tiles before grouting

Some tiles will benefit from protection before and after they are grouted, including matt porcelain and handmade encaustics.

Matt porcelain tiles don’t need to be sealed but as they tend to be heavily textured – especially those used outdoors – grout can easily become lodged in the surface. This is a particular issue when brush-in jointing compounds are used; resins accumulate in the tile’s high/low surfaces and once congested, the texture is lost along with the tile’s slip resistance. A quality barrier, like LTP Porcelain Tile Protector, applied before grouting, will help protect tiles from staining and make the removal of residues easier. It will promote an easy installation, as it will improve/increase grouting working times, and a final coat after installation will make ongoing maintenance easier.

Authentic encaustic tiles are made from a mixture of natural marble powder, cement and coloured pigments which create a surface pattern above a sand and cement backing. They tend to be very porous and can easily become stained.  They will need to be sealed before and after grouting.  Our blog – Protecting encaustic tiles – runs through the steps.  

Both matt porcelain and encaustic installations will also benefit from the added protection of LTP Grout & Tile Protector, applied after installation.

Restoring older grout joints

Grout lines can easily be restored in older installations by deep cleaning the joint and applying a protector. For acid resistant tiles, we recommend treatment with LTP Grout Stain Remover; it contains a rapid action cleaning agent which removes cement, limescale and grout residue.  For acid sensitive surfaces, including limestone and marble, we recommend LTP Grimex.  To target cement residues, salts and efflorescence, the range also includes LTP Cement Grout & Salt Residue Remover, which can be used on all types of unpolished natural stone, as well as porcelain and glazed ceramics.

Ongoing maintenance tips

Once your grout joint has been protected, avoid strong alkali, acid or bleach-based tile/grout detergents. These types of cleaners can affect the surface of the grout, making it slightly coarser and more likely to hold onto dirt.  Also, avoid homemade ‘cleaning hacks’.  Many people recommend mixtures of vinegar, soda crystals, bicarbonate of soda, water and lemon to make all-purpose cleaners and these ingredients are either very acidic or have high alkaline levels.  A lot of natural materials, like limestone and marble, are very sensitive to acid and alkaline, as are grout joints. All of these can damage the natural tile and the grout joint.

A good quality pH-neutral detergent will keep surfaces clean and help ensure that the grout protection is not compromised. Neutral spray cleaner - LTP Multpurpose Cleaner - is ideal for kitchens and bathrooms.  Other options include LTP Porcelain Tile Cleaner and LTP Stonewash.

For more advice, visit our blog and LTP TV which includes video demos on all aspects of cleaning, sealing and renovation.  Also, contact LTP’s Technical Team on tel. 01823 666213, and email info@ltp-online.co.uk

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Before sealing, we recommend a thorough clean with LTP Grimex, using a 1:10 dilution. This applies to both newly laid and renovation projects. It’s also important not to use an acid-based detergent; encaustic tiles are sensitive to acid, which can etch the surface and damage the grout joint – and the sealer once the tile has been protected.

When it comes to sealing there are various options available, depending on the look that you want to achieve. Impregnating sealers LTP Mattstone or the water-based equivalent LTP Mattstone H20 are popular, as they protect the tile without altering the appearance. Depending on the type of encaustic tile being used, up to three or four light coats of sealer might be needed. Always test on an inconspicuous area first and buff off any excess.

LTP Colour Intensifier is also popular, as it enhances colour and will bring out the different tones within the tile. Like Mattstone, it’s also an impregnator, so it will allow the tile to breathe. For ongoing maintenance, we recommend LTP Waxwash.

A correctly sealed and maintained encaustic floor should last three to four years before resealing is needed.  For more information, please follow the link: Encaustic Tiles guide

To find out more, please call LTP on tel. 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

Water-based steam cleaning may seem like a fast and efficient way to keep a stone floor spotless but repeated use of super heated water can potentially cause issues. These include residual staining, mobilisation of salts and corrosion of hidden particles of Iron within some limestone surfaces.

 COMPROMISED IMPREGNATING SEALER?

Surfaces that have been treated with an impregnating sealer can also be compromised. Steam cleaning doesn’t normally remove the finish but repeated use can expose new fissures and capillaries within the stone. The newly exposed and unsealed surface takes in more dirt and becomes harder to clean, so then requires more frequent cleaning. This increase in cleaning can then, in turn, exacerbate the problem.

SURFACE SEALER DAMAGE

Topical sealers used to finish the surface of stone can also be damaged.Steam is often used to remove paints, wall papers and othercoatings from surfaces. If a film-forming sealer has been used then the steam can cause a partial separation of the seal from the surface of the stone, causing it to turn white or opaque.

CRUMBLING OF THE SURFACE?
Moisture from repeated steam cleaning can, in some
cases, cause spalling or fragmentation of the surface.
The migration of salts from moisture in the limestone can promote crumbling of the surface causing larger fissures and craters to appear. This is more
common in limestone and marble that contain naturally occurring mud or calcite veins which are more vulnerable to this issue.

WHAT TO DO?

COMPROMISED IMPREGNATING SEALER: Intensively clean the surface of the stone with LTP Grimex. Leave overnight to dry. Re-apply impregnating sealer – LTP Mattstone H2O or LTP Colour Intensifier & Stainblock H2O. For routine aftercare use LTP Waxwash. This is a PH neutral cleaner that will not damage the stone or compromise the seal.

SURFACE SEALER DAMAGE: Remove the film forming sealer using LTP Grimex or LTP Solvex. Leave overnight to dry. Re-apply the film forming sealer – LTP Ironwax Satin or LTP Ironwax Gloss. For routine aftercare use LTP Floorshine. This gentle detergent will clean the stone and repair the seal where it has worn from abrasion every time the floor is washed.

RUST STAINS ON THE SURFACE: Intensively clean the surface of the stone with LTP Power Stripper or specialist treatment, LTP Ferrex. Leave overnight to dry. Re-apply impregnating sealer, as above. For routine aftercare use LTP Waxwash. 

CRUMBLING OF THE SURFACE: Intensively clean the surface of the stone with LTP Grimex. Leave overnight to dry. Use a suitable colour-matched resin stone filler to fill in the voids. Re- hone the surface of the stone using a twister pad and sponge down with a little water to remove any dust or sediment. Leave to dry. Re-apply impregnating sealer, as above. For routine aftercare use LTP Waxwash. 

This information is offered without guarantee.  The material should be used so as to take account of the local conditions and the surfaces to be treated.  In case of doubt, the product should be tried out in an inconspicuous area.

Dorset path before treatment - by Silex UK - with LTP Blackspot & Algae Remover

Regular patio maintenance brings lots of benefits.  It retains a tile’s aesthetic, along with its performance, and helps reduce the need for intensive cleaning and re-sealing down the line.  Most organic stains are relatively easy to remove, especially if the surface has been sealed, but there are some that can prove more difficult, like black spot. 

What is black spot?

Despite its name, black spot can be black or white and it originates from plants and trees. This dust-like lichen microspore is carried by the wind and rain and it colonises on stonework, taking about 2-3 years to get really established below the surface.  Black spot thrives in damp, shady places, sending its tendrils or ‘hyphae’ down into the stone’s pores, searching for nutrients.  It’s a particular menace in porous stone, as its open texture enables the microspores to spread more easily, but even less porous materials like porcelain aren’t immune.  Here, the lichen can still create a slippery residue on the tile surface.  

White black spot in Chiswick, before treatment with LTP Blackspot & Algae Remover by Silex UK

A deeply stained terrace in London, before treatment with LTP Blackspot & Algae Remover by Silex UK

Why water doesn’t work

A pressure washer and, sometimes, a dose of household cleaner is a common go-to treatment.  However, this doesn’t work because hyphae become anchored into place below the surface.  In fact, the extra dose of water only makes conditions even better for the rampant lichen.  Also, pressure washing can damage the surface of the stone, loosen the grout and, if any protective sealer is applied, it will damage that too.

A specialist, two-pronged attack is necessary in order to remove black spot stains and the microspores below the surface.  Any treatment used needs to have a bleaching action, to restore the colour of the tile or paver.  It also needs to target the hyphae below the surface.  But care should to be taken.  If a treatment is acidic, it can damage acid sensitive material and erode the grout joint.

Removing stains and preventing regrowth

Giving results in as little as two hours, LTP Black Spot & Algae Remover targets organic residue, restoring appearance to natural stone, concrete, brick and porcelain.  Developed to deep clean new and existing paths, patios and driveways, the treatment targets black spot, lichen, moss, algae and other stains caused by damp and slippery leaf matter.   

Three case study examples, shared by Alastair Niddrie from stone maintenance specialist - Silex UK - illustrate treatment with LTP Black Spot & Algae Remover at sites throughout the UK:  The first – a York Stone and brick installation in Chiswick – had a build-up of green algae and black spot over 30 years.  As well as white and black staining, the lichen was creating a serious slip hazard.  At the second site in Dorset, a large limestone patio was stained with black spot, algae and dirt. The client was considering replacing the patio as repeated jet washing hadn’t resolved the issues and had damaged some areas of paving.  The third site – a courtyard in London – was also deeply stained with black spot and algae.

Dorset - after treatment                           Chiswick - after treatment

London - after treatment

“These types of stains are notoriously difficult to remove and a blast with a jet wash just makes matters worse.  We’ve found a solution with LTP Black Spot & Algae Remover. It’s formulated to cling to the surface and once absorbed, it breaks down the hyphae within the stone porosity, as well as the slippery residue on the tile surface.  A bleaching action also removes the staining, to restore surfaces to their former glory. We’re delighted with the results and now routinely use the treatment on all patio refurbishments,” explained Alastair.

Before application of LTP Black Spot & Algae Remover, surfaces should be swept clean.  The treatment is then applied neat, using a watering can or light pressure garden spray, where it fizzes during treatment.  It should be left to act for 2-4 hours and surfaces are then hosed with clean water.  The solution can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.  

Newly cleaned surfaces can be protected with LTP External Stone Sealer or LTP Porcelain Protector.  Both treatments create a barrier without altering surface appearance; this prevents absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

To find out more, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

To contact Silex UK, please visit https://silexuk.com, tel. 0207 504 1070 (London Office) or 01225 650122 (Bath Office) or email info@silexuk.com

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Natural stone and porcelain are a popular choice for pool surrounds but if they’re not correctly maintained, they can quickly create a slip hazard. This is rarely the fault of the tile. Most materials specified for pool sides have good slip qualities, with a textured surface that provides grip under foot. Problems are caused by a build-up of residue and a poor cleaning regime, which fails to remove them.

Swimming pools come in contact with a host of organic contaminants – from food, cosmetics and sun creams, to environmental contaminants like microscopic algae spores and bird droppings. During maintenance, it’s not uncommon for surfaces to be washed with a detergent and rinsed with pool water, which re-contaminates the surface. Many detergents also fail to break down the residue and a cycle of poor cleaning and residue build-up is created.

In order to remove organic-type residue, you’ll need to use an alkaline-based cleaner. LTP Grimex is a great option as it will break down these deposits, without damaging the surface. For general use, Grimex is diluted 1:5 with water, but a lower dilution of 1:3 may be needed for very dirty pool surrounds. The cleaner is applied with a sponge or water brush and should be left to act until the dirt releases – this will normally take between 5 and 30 minutes. The tiles should then be thoroughly rinsed with clean water to neutralize the surface. Scrubber machines can also be used, where suitable.

Another really good option is LTP Black Spot & Algae Remover. Like Grimex, it’s also an alkaline-based cleaner and it is especially useful where there’s a greater build-up of environmental contaminants, like mould, black spot, lichen, fungus and algae. It’s applied directly to the tile surface, left to act and should then be thoroughly rinsed with clean water. As well as removing residue, Black Spot & Algae Remover also has an antibacterial and bleaching action, so it helps prevent regrowth and restores light-toned paving to its original colour.

During a deep clean, any limescale residue should also be removed; limescale quickly builds up in wet environments, especially in hard-water areas, and is a magnet for dirt. We recommend treatment with LTP Cement, Grout & Salt Residue Remover which can be used on unpolished stone, ceramic and porcelain surfaces. It doesn’t tarnish or affect chrome or stainless steel either, which makes it ideal for those pool side shower areas that sometimes suffer from limescale build-up. Also, as limescale has a similar composition to cementitious grout, treatment will remove new and old installation residues. LTP Cement, Grout & Salt Residue Remover is diluted according to build-up, applied with a cloth or sponge, scrubbed with a white emulsifying pad and then thoroughly rinsed with clean water.

Another common issue in humid pool environments is rust staining. This often occurs as a result of oxidisation and degradation of metal fixtures, furniture, barbeques and tables in and around pool areas. Rust deposits can easily transfer onto other surfaces leaving an orange stain that’s very difficult to remove. A good option for this is LTP Rust Stain Remover, which you apply to the stain and leave to work; once the treated area has turned deep purple in colour, you scrub and then remove the residue with a sponge before rinsing with water.

If you’re laying a new natural stone pool surface, or have renovated older stone tiles, you’ll need to protect the surface from stains going forward. We recommend LTP External Stone Sealer – an impregnating treatment that protects without forming a film, which could potentially affect anti-slip properties. It’s water-based so offers a safe application and it can also be applied in damp conditions. For ongoing aftercare, choose a pH-neutral, phosphate-free cleaner, like LTP Waxwash, which will protect the tile, any sealant applied and will make ongoing maintenance much easier.

Before embarking on a pool deep clean, always check that the solution you’re using is suitable for your surface. And, once the surface is clean, ensure that a regular maintenance regime is adopted to keep residue build-up under control and surfaces safe all summer long.

For more information and expert advice, please contact LTP on tel. 01823 666213 and email technical@ltp-online.co.uk

When a restorative treatment like LTP Blackstone Sealer & Restorer is applied to black stone, it mixes with any loose particles of limestone. These particles are caused by etching which occurs when the stone comes into contact with acidic rain. The etching creates a sediment which is carried into newly exposed capillaries and the sealer, in turn, draws the sediment out of open pores. When this residue mixes with the sealer, it creates a smeared and patchy appearance.

To avoid this happening, the surface should be thoroughly cleaned to remove the sediment and condition the stone. If you rub your hand across the surface before cleaning, you’ll see a dusty residue; that’s the limestone sediment.  Cleaning the surface opens the pores and prepares the stone for application of the sealer.  Here is a link, which includes full preparation directions for new and older surfaces.

LTP Grimex is ideal for preparing new surfaces before application of Blackstone. For older surfaces, we recommend LTP Black Spot & Algae Remover to remove blackspot, algae, mildew and stains. 

Don’t be tempted to over-apply LTP Blackstone in order to achieve a darker finish or speed the process up.  Less is more. It’s far better to apply several thin layers than one thick layer.  If you apply too much product in one go it won’t be absorbed properly and the finish will be patchy.  Here is a link to application directions.

Any residue treatment should be removed with LTP Power Stripper, using a diluted 1:10 solution as explained in the instructions.  This is an important part of the process because the treatment only works in the pores of the stone, where the formulation cross links to make the sealer colourfast.  This final clean won’t return the stone to its original colour, it will just remove any excess treatment that hasn’t been absorbed and is effectively just sitting on the surface. 

For more information about black stone and the application of LTP Blackstone Sealer & Restorer, see our blog Black Stone issues – Series One: How to restore colour to black stone.  The Blackstone product page also includes additional information, including a video aid and coverage calculator.

To watch video demos, visit LTP TV.

For more information and expert advice on surface protection and maintenance, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

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External rust stains

Most rust stains are caused by metal objects and they’re particularly common in places where metal comes into contact with moisture.  Metal towel rails, weighing scales, soap dishes, jugs and containers, toilet roll stands and candle holders are common culprits in the home.  Outside, marks are often left by firepits, BBQ’s, garden tools, toys and bikes, pots and parasol stands.  The stains are caused by tiny deposits of iron that wash off the surface of the object when it comes into contact with moisture or water; these deposits then leave a rust stain.  In addition, some weed killers also contain ferric sulphate which can cause rust stains.

Internal rust stains

Rust or orange-coloured discolouration can appear naturally within hard ferrous-type stone pavers, including sandstone, slate and granite. These stones naturally contain iron which can oxidise or rust when it comes into contact with rain. Washing a patio with excessive amounts of water – for example, with a jet wash or patio cleaner – can also cause this reaction, as can some cleaning products.  This type of staining is often referred to as ‘iron break-out’.

Certain acidic cleaners, like brick acid and cement removers, also contain ingredients that can stain/damage limestone and sandstone pavers, and can accelerate oxidisation in hard ferrous stone.  Ironically, these same products are often used to remove rust marks and can create an even greater problem.    

Each type of rust – internal and external – needs to be treated differently for effective removal of the stain. We recommend one of two products – LTP Rust Stain Remover or LTP Ferrex, both of which can also be used indoors and outdoors.

LTP Rust Stain Remover is a non-caustic solution that removes marks caused by external sources.  It is safe to use on all polished and unpolished natural and artificial stone tiles, including marble, granite, travertine, split face stone cladding, sandstone, concrete, terracotta, ceramic and porcelain. After applying, the reaction between the rust stain and the treatment causes it to turn purple, so you can clearly see the product working. More stubborn stains may need more than one treatment. If this is the case, we recommend leaving 15 minutes after the first dosing, then removing the rust residue with a sponge or water and repeating until all of the ‘purpling’ has stopped.  Once there is no colour reaction, all of the iron has been removed.  Here’s a link to more information, including a Video Aid which shows the treatment being applied, step by step. You can also see a short demo on our YouTube Channel, LTP TV, showing treatment on a porcelain paver.

How to apply LTP Rust Stain Remover 

1. Ensure that the surface to be treated is completely free from dust and dirt before application. If necessary, wash with LTP Power Stripper diluted 1:10 with water. 
2. SHAKE WELL BEFORE USE. Do not dilute. Completely cover the rust stain with the product. Leave to act for 15 minutes. The product colour will change to a deep purple as it reacts with the rust. Once the indicated time has elapsed, remove the residue and rinse the surface thoroughly with plenty of water and leave to dry. Repeat application until the stain is completely removed. 

The second treatment, LTP Ferrex is formulated to remove the rust stains that arise from within the stone, caused by the naturally occurring particles of iron.  It’s designed for hard ferrous stones including sandstone, granite and slate. Ferrex is an acid-based cleaner but it’s the right kind of acid for harder stones.  However, it is not suitable for use on acid sensitive surfaces, including limestone, marble or pavers with a highly polished finish. It’s worth diluting the product with water before use and testing it at different strengths on an inconspicuous area; in this way, you can see which dilution suits your tile best before treating the whole surface. Here’s a link for more information on application and dilutions. You can also see a Video Aid on the product page and on LTP TV. Treatment to remove these types of stain can take between 3-6 hours. The reaction won’t be visible like it is LTP Rust Stain Remover; the treatment should be left to work and no agitation is generally needed. Once the staining has disappeared, rinse well with water and leave the pavers to dry. 

How to apply LTP Ferrex 

1. After testing on a small area, apply the solution to the surface and spread out evenly. For external applications garden sprayers can be used.
2. For severe staining, surfaces should be agitated using a short haired scrubbing brush or black emulsifying pad. 
3. After 3 – 6 hours, rinse with plenty of clean water. If traces remain after a couple of days, repeat the process. 
4. After treatment, we recommend that the surface is protected from water with an impregnating sealer like LTP External Stone Sealer or LTP Mattstone H20.  This will greatly reduce the risk of rust discolouration returning. 

Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside. 

For more advice, visit our blog section on the website, browse LTP TV on YouTube or https://www.ltp-online.co.uk.  To contact the LTP team direct, call 01823 666213 or email info@ltp-online.co.uk

Porcelain tiles are very durable – and generally far more resistant to stains than a natural surface – but this myth is incorrect. They are not maintenance free.

A good cleaning regime with a suitable detergent is essential. It will not only maintain a tile’s aesthetic, but also its slip resistance; this is particularly important in areas like hallways, bathrooms and kitchens, and on paths and patios outdoors.

If dirt is allowed to accumulate in a textured porcelain surface, or on the face of a polished porcelain tile, it will become slippery and dull. In textured tiles, dirt often accumulates in the tile’s high/low surfaces and, once congested, the texture is lost along with the tile’s slip resistance. These issues can also be created by using an unsuitable, waxy cleaner, which will leave a residue behind. Any residue will also create a key onto which dirt will stick and the surface will be more difficult to keep clean.

Outdoors, tiles should also be maintained correctly. A blast with a jet wash may seem like the best option but it will only wash dirt off the surface, and over-use can in some cases damage and remove grout. A specialist treatment will react with ingrained residue and organic matter, ensuring that the tile texture and aesthetic is retained.

Inside, we recommend LTP Multipurpose Cleaner for general cleaning and aftercare, and for Indoors and outdoors, we recommend LTP Porcelain Floor Tile Cleaner.

For external porcelain, we recommend LTP Grimex for a deep clean and LTP Blackspot & Algae Remover for tiles stained with mould spores, black spot, lichen, fungus and moss.

For more advice on stone and tile protection and maintenance, please contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit http://www.ltp-online.co.uk

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A post-winter clean

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.   A blast with a jet wash may seem like a quicker and easier option but it will only wash dirt off the surface.  A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity.  

Before cleaning, remove furniture, pots and other objects, and sweep the pavers to remove all leaves and residue.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your pavers are prone to slippery black spot, lichen, moss and algae, they will benefit from a targeted treatment with LTP Blackspot & Algae Remover.   Designed to break down microspores and black spot ‘hyphae’ before they colonise, LTP Blackspot & Algae Remover is acid-free, so it’s safe to use on acid-sensitive stone.  However, it does contain a bleaching action to remove stains, so test first on an inconspicuous area.  

How to apply LTP Blackspot & Algae Remover:

1. Remove furniture and other items from the area to be treated.
2. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
3. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
4. Hose off thoroughly with clean water.  

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during the freeze and thaw cycle next winter.

Added protection

If your pavers haven’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush, as shown in the Video Aid.  It can be applied over residual moisture and will protect pavers from moisture, stains, weathering and efflorescence.  It’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

If, like us, you’ve seen lots of articles on deep cleaning, you may be tempted to try out some of the popular ‘cleaning hacks’.  Many people are recommending mixtures of vinegar, soda crystals, bicarbonate of soda, water and lemon to make disinfectants, all-purpose cleaners and limescale removers.  The problem is that lots of natural materials, like limestone and marble, are very sensitive to acid and alkaline.  Vinegar and lemon are both very acidic – and soda has high alkaline levels.  Both can erode or ‘eat away’ natural surfaces like stone floors, tiles, countertops and mosaics – and damage any protective sealer that’s been applied.  These surfaces should always be cleaned with a gentle pH-neutral product.

It’s useful to think about the pH scale before choosing – or making – a cleaning product.  Running from 0-14, anything that scores a 7 is considered neutral and safe to use on all surfaces. Anything below a 7 is considered acidic and anything above a 7 is considered alkaline.  Acidic solutions are best at removing calcium, rust and other mineral ‘non-organic’ stains. Lemon and vinegar score around 3 on the pH-scale and toilet bowl cleaner is the most acidic, with a pH of 1-3.  At the alkaline end of the scale, you’ll find bleach and many heavy-duty tile cleaners; they have a high pH value of 11-13 and are best at removing organic dirt, grease and oil.  

Surprisingly, many ‘eco’ branded products can also cause damage to natural surfaces. Look closely at the label on a leading anti-bacterial all-purpose cleaner and it states that it isn’t suitable for natural stone because it is acid-based.  It’s always worth reading the small print.  

Another common misconception is that an extra dose of the right product will do an even better job.  But this can actually create problems. Using a lower dilution may mean that a surface needs to be rinsed; if it isn’t, the residue may form a film on the surface, which could make future cleaning more difficult.  

LTP’s range includes lots of different treatments for tackling specific jobs – and removing specific stains – as well all-purpose cleaners for use around the home.  New products include LTP Multipurpose Cleaner – a gentle and effective pH neutral cleaner that’s ideal for kitchens and bathrooms. The new rinse-free treatment is safe to use on all types of natural stone – sealed, unsealed, polished and unpolished – as well as porcelain, ceramic, glass, stainless steel and chrome.  

For more information and expert advice, please visit https://www.ltp-online.co.uk, or contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Many people believe that applying a sealer to external paving traps moisture in – and this statement is both correct and incorrect.

In the case of film-forming products, it is true.  However, in terms of modern impregnators it is false. They do not form a film on the surface but are, instead, absorbed into the open pores.  The carrier, which is either a water or a spirit, dries out to leave the active ingredients to only line the walls of the pore, rather than block it, allowing any water vapour to escape.

Film-forming sealers

Film-forming sealers are often referred to as ‘topical’ or ‘acrylic’ sealers.  They create a protective film on the surface of the tile, to prevent moisture penetration and protect surfaces from wear and tear. Some also provide aesthetic benefits by enhancing colour or creating a glossy finish.  

These sealers can be water-based, but generally they are spirit-based and should only be applied to a surface when it is clean and bone dry.  If any residual moisture is present, it can sometimes become sandwiched between the stone and the sealer, creating a cloudy or milky appearance.  Moisture rising through the ground can, in some cases, also include efflorescence – a crystalline, salty deposit – which is prevented from escaping. This can have the same effect and, in many cases, will cause the sealer to flake or peel away from the surface.

Impregnating sealers

Breathable, impregnating sealers penetrate, react and line the open pores, rather than just sit on the surface. They create a hydrophobic and oleophobic barrier that helps to prevent deep staining and facilitates future cleaning and aftercare. Once cured, water vapour permeability remains, allowing transition of microscopic droplets of moisture. This helps to keep any rising salts down and allows any residual moisture to escape. 

The barrier properties of the sealer repel water, oil and grease from above. Many quality treatments, like LTP External Stone Sealer, also help prevent moss and mould formation, and protect against weathering, UV rays and efflorescence. 

For more advice on stone & tile protection and maintenance, please contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit http://www.ltp-online.co.uk

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Both new treatments provide surface protection, without forming a film on the surface of the tile, and can be used indoors and outdoors, on wall and floor tiles.  The impregnating formulations are absorbed into the tile’s porosity, whilst allowing the surface to breathe, strongly repelling stains and promoting easy maintenance. 

LTP Colour Intensifier & Stainblock H2O is an all-in-one sealer and enhancer suitable for all types of natural stone, artificial stone, quarry, brick, concrete and paving, with honed, rough cut and polished finishes. As well as providing protection against water and organic stains, it also helps to reduce efflorescence.

LTP MPG Sealer H2O is designed for polished marble, polished and semi-polished porcelain or “lappato” including PGVT (polished glazed vitrified tiles), polished granite and encaustics. The treatment creates a natural finish, with minimal change to the original appearance.  As well as protecting new installations, it can also be used in renovations; highly polished tiles can be quite vulnerable to scuffs and scratches and MPG H20 works well to cover these and helps to make them less visible. 

All LTP water-based protectors offer equal performance to their spirit-based solvent equivalents.  “The water or spirit elements within a sealer don’t play a part in the actual protection,” explained Mark Atkins. “They just facilitate application and evaporate as the treatment dries.” 

As well as providing a fast, safe and easy application, the treatments’ water-based formulations also make transportation/shipping and storage easier, and typically provide 50% greater coverage than a spirit-based solvent.

To find out more about the new treatments and to order free samples, please call 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

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A former pupil at local Court Fields School – and a keen footballer and runner – Leah brings proven retail experience gained in the hospitality sector.  The new apprenticeship role is based at LTP’s head office in Wellington, Somerset, where the programme will span all aspects of the firm’s business, including the retail counter, office administration and technical training.

Director, Julie Lock commented, “We’re committed to investing in the future and our new apprenticeship programme will play a key role. Leah has already impressed us with her commitment and enthusiasm; we’re looking forward to supporting her as she starts her career,” 

Leah added, “Positive reviews of LTP’s products attracted me to the business.  I’m really looking forward to developing my knowledge, so that I can advise customers on all aspects of the range and be an asset to the team in the years to come.”

To find out more about opportunities at LTP, please call 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

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The popularity of natural floor materials - and a desire to ‘bring the outside in’ - is showing no sign of slowing.  Along with limestone and timber, there’s also renewed interest in terracotta – and not just in traditional settings.  Its rustic good looks bring a real warmth to all interior styles and, with earthy tones flagged as a major trend for next year, demand looks set to increase even further.

Terracotta is a very wholesome, natural material.  It’s basically clay that’s dried in the sun or fired in an oven and its name literally means ‘baked earth’.  Along with its beautiful burnt orange colouring, terracotta provides a robust finish that’s versatile and easy to look after.  However, like many natural materials, it is porous and can easily become stained.  There are two ways of protecting tiles – either by applying a synthetic sealer or the more traditional method using Boiled Linseed Oil and wax.

The two ways to protect terracotta

Synthetic Sealers:

Synthetic or acrylic sealers are the easier option in terms of application.  They’re generally faster to apply and they create a surface seal with a degree of sheen.  LTP Ironwax Satin is applied with a sponge or paintbrush to textured tiles, or with a cloth or pad to honed tiles, and no buffing is required.  Three coats are generally sufficient - with an hour between each application - but a higher sheen can be created with additional coats, up to a maximum of six.

Before either treatment is applied, tiles should always be cleaned thoroughly, to remove all dirt and grout residue.  For ongoing cleaning and aftercare, use LTP Floorshine, which reinforces protection as it cleans.

The Traditional Method:

Although the traditional treatment route takes longer, it does create a more characterful aesthetic and it gives the terracotta longer-term mechanic strength, by effectively filling the pores.

During the first stage of treatment – and following a thorough clean -  LTP Boiled Linseed Oil is applied with a brush until the tiles are saturated. You should allow at least 12 hours between each coat to ensure that the oil thoroughly cures. Most terracotta will take 1-2 coats to reach saturation but some tiles, especially handmade terracotta, may take 4-5 coats. The tiles should then be left to dry for at least 24 hours.

During the second stage of treatment, wax is applied. This provides a resilient protective layer against water, dust and dirt, as well as extra sheen.  LTP treatments include LTP Clear Wax – a natural, clear finish – and medium brown. Both treatments have a soft paste consistency. They are applied with a cloth and the surface is then buffed.  The traditional treatment method can also be used to restore older floors, once the tiles have been thoroughly cleaned and any existing sealant removed. 

A traditionally treated terracotta floor with an Antique Wax finish.

For more advice on floor maintenance and protection, please contact LTP’s Technical Team on tel. 01823 666213, email info@ltp-online.co.uk or visit www.ltp-online.co.uk

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Hancocks Jewellers' frontage before treatment with LTP (left) and after treatment (right)

Hancocks Jewellers’ white marble frontage is defined by two large windows, one of which displays its exquisite pieces.  Over time, water has saturated iron nails used to hold ledges in place and rusty water has penetrated the fine stone.  Rust stains are one of the most challenging to remove and treatment can be difficult.  Staining can be caused by water coming into contact with iron particles and it can be naturally occurring, as many natural stones, like marble, contain deposits of iron.  This can oxidise or rust when it comes into contact with moisture.   Certain acid cleaners also contain solutions that can stain and accelerate oxidisation and, as marble is acid-sensitive, caustic cleaners can cause further damage.  

Front & side views after treatment with LTP

To remove staining, without damaging the marble, Absolute Stone Care used two LTP treatments: LTP Rust Remover to tackle stains caused by external sources and LTP Ferrex to remove naturally occurring staining. Repeated treatment drew dark red staining from deep within the stone’s porosity.  The frontage was then washed down with LTP Power Stripper and rinsed with clean water.  During the final stage of the three-day project, the team repolished the marble to restore its natural sheen, repaired joints, buffed the surface and applied ECOPROTEC Natural Finish Stone Sealer.  Ledges and flashings were also repaired and an annual maintenance regime scheduled.

To find out more about the LTP treatments used, please contact LTP on tel. 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

To contact Absolute Stone care, please tel. 0800 1013 070, email info@absolutestonecare.co.uk and visit https://www.absolutestonecare.co.uk. 

To find out more about Hancocks Jewellers, please visit https://www.hancocksjewellers.co.uk

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Cleaning floors and tiled areas is one of the hardest jobs and many of us reach for a heavy-duty cleaner.   However, it rarely offers the best solution.  Most of these detergents – including many of the eco ranges - contain acid which will damage tiles, grout, chrome fittings and any protective sealer that’s been applied.  This is a particular issue for natural surfaces like stone and marble, which are acid sensitive.  To deep clean safely, we recommend LTP Grimex.  As the name suggests, it removes grime and stains, including oil, grease, ingrained dirt and wax.  It’s safe to use on natural stone, as well as porcelain and ceramics tiles, and can also be used to deep clean marble and granite worktops.

For grout and silicone that’s stained with mould spores, we recommend LTP Mouldex.   This treatment comes in a pump spray and it’s formulated to cling to surfaces, which targets the treatment and prevents run-off.   Mouldex has a bleaching action which helps restore colour and it’s antibacterial, so it helps prevent mould regrowth.  It can be used on natural as well as artificial stone – and on coloured grout – but it’s always best to test first, in an inconspicuous area.

How to use LTP Grimex

For areas that are slightly grubby – and for absorbent tiles – dilute one part of Grimex to ten parts of warm water.  Apply with a cloth or mop and rinse with clean water.  

For dirtier surfaces, use a stronger 1-3 dilution and agitate the surface with a brush.  Let the solution act for 5-10 minutes, mopping with additional solution to keep the tiles wet, and agitate again before mopping up and rinsing thoroughly with clean water.

For built-up grime and stubborn stains, Grimex can be used neat and then thoroughly rinsed.

Sometimes, tiles that have been deep cleaned with a low dilution of intensive cleaner will need to be resealed.  The easiest way to see if a sealer is still performing is to carry out a water test:

1. Drop a bead of water onto the surface.
2. If it sits in place, it is well sealed. If the water quickly soaks into the tile or makes the surface look darker, then it needs resealing.

To top up protection, choose a suitable sealer from LTP’s range and carefully follow application directions.

How to use LTP Mouldex

Before applying the treatment, make sure that tiles are completely dry.  Spray Mouldex 5-10cm from the surface and leave it to act for 45 minutes.  Then, apply a little water and agitate with a stiff brush to help lift the grime and dirt. Finally, rinse the surface thoroughly with water and a clean sponge.  For silicone and elastic grouting, and for stubborn stains, the treatment can be left overnight.    NB.  Mouldex shouldn’t be used with acid-based residual grout removers or other acid- based cleaners.

Rinse-free routine cleaning & sanitising

Once the deep cleaning’s done, LTP Stonewash is a great all-rounder.  A rinse-free pH natural spray cleaner, it can be used on all hard surfaces, from marble to polished porcelain. For walls and work tops, spray 20 cm from the surface and wipe over with a clean, damp cloth. For natural and artificial stone floors, we recommend LTP Waxwash; just dilute 2-3 capfuls (or 5 for dirtier surfaces) into a bucket of warm water, mop and allow to dry.  

To sanitise surfaces, the range also includes LTP 75% Alcohol Ethanol. Made to official recognised WHO standards, it can be used on most household surfaces where it eliminates 99.99% of bacteria & viruses. On floors, walls, worktops and door handles, spray and wipe surfaces with a microfibre cloth or mop.  On fabrics and upholstery, spray finely and leave to dry.  NB. The surface sanitiser is not suitable for surfaces that have been polished with a natural or acrylic wax.

For more advice, browse our Technical Blog or contact the LTP team on tel. 01823 666213 and email info@ltp-online.co.uk

LTP’s Cleaning & Aftercare Guides offer step-by-step guidance on all aspects of tile treatment – from initial cleaning, through protection to daily maintenance. Tailored for individual materials and fields of use, the series includes detailed directions on application and method, presented with step-by-step visuals. Bespoke guides tailored for individual projects are also available.

The latest title to join the series is ‘Polished Terrazzo – clean, seal, care – Guide’. Terrazzo offers many benefits, not least durability and a stunning aesthetic, but incorrect maintenance can create big challenges. Terrazzo is acid sensitive and, during the polishing process, micropores are opened within the tile surface which make it more sensitive. This allows the tile to more readily absorb grease, dirt and spillages. Use of acidic maintenance products can also etch the tile surface and dull any sealant applied.  The new guide presents best practice instructions for new installations and renovations. It includes precise advice on dosing, method and timings, as well as recommendations on man power, protection and correct cleaning tools.

Other new titles in the LTP Guide series include ‘LTP External Natural Stone & Paving Cleaning and Sealing Guide’ and ‘LTP External Porcelain Paving Cleaning and Protection Guide’.  For copies – and to discuss bespoke manuals and practical workshops – please contact LTP’s Technical Team on 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

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Forming part of the Town Hall Campus Transformation Programme, the natural stone installation includes a sweeping entrance and circular water feature within an expansive paved square.  The Purbeck limestone, in a bush hammered finish with a Purbeck brushed finish border, was specified to reflect “the architectural language” of the Grade II listed Town Hall.  The stunning installation seamlessly incorporates ramps, low walls, access points and discreet fountain drainage grates.   

High performance and sustainability were key considerations for the stone’s protection.  LTP’s Natural Finish Stone Sealer provided the protection and fulfilled all eco credentials.  The water-based treatment repels stains, without changing the stone’s appearance, and allows surfaces to breathe.  It also ensures a safe application, being low odour and VOC-free.

For more information about the project, please contact:

LTP on tel. 01823 666213, email technical@ltp.co.uk and Lovell Stone Group on tel. 01929 439255, email sales@lovellstone.com and visit https://www.lovellstonegroup.com

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Time to tidy

Whilst most aluminium and wooden furniture can be left outdoors year-round, materials like wicker and rattan generally need to be protected – under covers or indoors.  It’s a few weeks (hopefully) before we need to pack things away but it’s worth planning ahead now and clearing some storage space.

At this time of year, fallen petals and leaves quickly start to build up, especially behind pots and containers.  If left in place, they’ll quickly decay, leaving stains and slippery deposits.  It’s worth emptying and stacking pots before the temperatures drop – especially if they’re not frost-resistant.  Surfaces can then be swept with ease and any weeds removed.  The clearer the surface now, the less dirt will be picked up on footwear over the winter months.

The pre-winter clean

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.   A blast with a jet wash may seem like a quicker and easier option but it will only wash dirt off the surface.  A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity.  

Before cleaning the patio, remove furniture, pots and other objects.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your patio is prone to black spot, lichen, moss and algae, it’s worth targeting these now too.  Periodic treatment with LTP Blackspot & Algae Remover will break down microspores and black spot ‘hyphae’ before they colonise.  LTP Blackspot is acid-free, so it’s safe to use on acid-sensitive stone, but it does contain a bleaching action to remove stains.  So, as before, test first on an inconspicuous area.  

How to apply LTP Blackspot & Algae Remover:

1. Remove furniture and other items from the area to be treated.
2. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
3. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
4. Hose off thoroughly with clean water.  

Both LTP Grimex and Blackspot & Algae Remover can be used on natural stone and artificial stone surfaces, including porcelain pavers.

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during the freeze and thaw cycle of winter.

Added protection

If your patio hasn’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush, as shown in the Video Aid.  It can be applied over residual moisture and will protect pavers from moisture, stains, weathering and efflorescence.  It’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

To retain a tile’s aesthetic and performance features – and to restore older tiles – we recommend the following steps:

New patio installations

Unpolished porcelain tiles don’t need to be sealed but they will benefit from application of a barrier treatment before grouting. This is because during installation grout and other residues will become trapped in the tile’s textured ‘high-low’ surface.  Trapped residues will compromise the look of the tile, creating a tell-tale white haze across the tile surface.  Maintenance will also be more difficult and a build-up of residue will create a slip hazard. 

To protect tiles during installation, we recommend LTP Porcelain Protector.  It’s a water-based ‘pre-and-post-grout’ treatment that’s designed to protect the tiles from staining and allow easy removal of residues like cement-based grout, two-part resin based jointing compounds and stubborn dirt.  Porcelain needs to be kept as wet as possible during installation, to improve and increase grout working times, and the protector helps in this respect too.

Before the protector is applied, the tiles should be cleaned and left to dry overnight.  To apply the protector:

1. Use a broad paint brush, foam roller or light pressure sprayer. 
2. Leave to dry for 30 minutes before applying a second coat. 
3. Leave the treatment to cure for a minimum of one hour before grouting or pointing. Once the grout is dry, and all residues have been removed, a further coat of Protector can be applied to the tiles and the grout joints. This helps with future cleaning and aftercare.

Renovating older tiles

To remove grout residue and white haze from existing installations, without damaging the joint or the paver, we recommend LTP Solvex – a non-caustic intensive cleaner/stripper.  Solvex helps to soften the resin residues, allowing for easier removal.  Application is normally followed by a final wash with LTP Grimex cleaning solution before rinsing down.

How to use LTP Solvex & Grimex:

1. Pour Solvex directly onto the pavers. 
2. Apply generously by dabbing onto stains with a cloth or brush. NB. Always wear gloves to protect your hands.
3. Work in manageable areas; normally in strips as far as you can reach without treading into the solution.  Do not brush out. 
4. Leave for up to 30 minutes, but don’t allow the solution to dry out. If it starts to dry out within this time-frame, apply more solution. 
5. Use a coarse, stiff brush or LTP Black Emulsifying Pad to remove the softened coating from the surface of the paver. Repeat this process if some staining remains. 
6. Wash down the pavers with LTP Grimex, diluted 1:3 with water.
7. Rinse with plenty of water and leave to dry.

As well as tackling brush-in resin grout, LTP Solvex can be used to remove wax, oil, silicone, acrylic and polyurethane sealer from porcelain.  It can also be used on stone, travertine, terracotta, slate, sandstone, flagstones, quarry tiles and glazed ceramic.  

Ongoing maintenance

Jet washing may seem like the best method for a fast clean but it will only wash dirt off the tile surface.  High pressure water will also damage the grout joints.  A specialist treatment, on the other hand, will react with the residue and organic matter, and will help break it down.  

To thoroughly clean a porcelain patio, we recommend LTP Grimex.  Grimex can be used at different dilutions depending on the severity of staining.  See the Technical Data Sheet for information on dilutions. Tiles are washed, using a brush or garden broom, and rinsed with clean water.   There’s lots of information about LTP Grimex on the product page, including a link to a Video Aid.

For periodic cleaning, you can also use LTP Porcelain Floor Tile Cleaner.  This detergent can be used inside and outside, so it’s especially practical for surfaces installed from home to garden, through bi-fold doors.  Just dilute 2 or 3 capfuls in a bucket of warm water – or 5 on dirtier floors – wash the floor and allow to dry.   This product doesn’t require rinsing. 

To remove other stains from outdoor slabs, solutions include LTP Blackspot & Algae Remover, LTP Rust Stain Remover and, for efflorescence, LTP Cement Grout & Salt Residue Remover.  All three treatments are safe to use on porcelain and stone tiles.   

Establishing a regular cleaning routine

We recommend cleaning porcelain pavers every couple of months or so – ideally, three times during late spring/summer and a couple of times during the winter.    Surfaces that are regularly cleaned will be easier to keep clean – and it will help to maintain a new aesthetic, as well as the tile’s performance features.

For more expert advice and information, contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

As well as marks from external sources, discolouration can appear naturally within hard ferrous-type stone pavers, including sandstone, slate and granite. These stones naturally contain iron which can oxidise or rust when it comes into contact with moisture, from rain, washing with excessive amounts of water – for example, with a jet wash or patio cleaner – and from contact with some cleaning products.  In addition, certain acidic cleaners, like brick acid and cement removers, also contain ingredients that can stain/damage limestone and sandstone pavers, and can accelerate oxidisation in hard ferrous stone.  Ironically, these same products are often used to remove rust marks and can create an even greater problem.  So, it’s really important to use tFor safe removal of rust, we recommend one of two products, depending on the stone type and the nature of the stain –

For safe removal of rust, we recommend one of two products, depending on the stone type and the nature of the stain – LTP Rust Stain Remover and LTP Ferrex.  Both treatments can also be used indoors.

Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside. 

For more advice, visit our blog section on the website or https://www.ltp-online.co.uk.  To contact the LTP team direct, call 01823 666213 or email info@ltp-online.co.uk

New installations

If you’re installing a new porcelain patio, issues around staining can be avoided by using a barrier treatment to protect the tile.  We recommend LTP Porcelain Tile Protector, which provides a number of benefits:

1. It prevents grout and resins from taking hold.  

2. It makes the removal of any residues much easier, should they occur. 
3. Porcelain needs to be kept as wet as possible during installation, to improve and increase grout working times.  The protector does this, which also aids points 1 and 2.
4. A further coat applied after installation will make ongoing maintenance easier too.

Before the protector is applied, the tiles should be cleaned and left to dry overnight.  To apply the protector:

1. Use a broad paint brush, foam roller or light pressure sprayer. 
2. Leave to dry for 30 minutes before applying a second coat. 
3. Leave the treatment to cure for a minimum of one hour before grouting or pointing. Once the grout is dry, and all residues have been removed, a further coat of Protector can be applied to the tiles and the grout joints. This helps with future cleaning and aftercare.

Old installations

To remove epoxy resin grout residue and white haze from existing installations, without damaging the joint or the paver, we recommend LTP Solvex – a non-caustic intensive cleaner/stripper.  Solvex helps to soften the resin residues, allowing for easier removal.  Application is normally followed by a final wash with LTP Grimex cleaning solution before rinsing down.

How to use LTP Solvex & Grimex

1. Pour Solvex directly onto the pavers. 
2. Apply generously by dabbing onto stains with a cloth or brush. NB. Always wear gloves to protect your hands.
3. Work in manageable areas; normally in strips as far as you can reach without treading into the solution.  Do not brush out. 
4. Leave for up to 30 minutes, but don’t allow the solution to dry out. If it starts to dry out within this time-frame, apply more solution. 
5. Use a coarse, stiff brush or LTP Black Emulsifying Pad to remove the softened coating from the surface of the paver. Repeat this process if some staining remains. 
6. Wash down the pavers with LTP Grimex, diluted 1:3 with water.
7. Rinse with plenty of water and leave to dry.

As well as tackling brush-in resin grout, LTP Solvex can be used to remove wax, oil, silicone, acrylic and polyurethane sealer from porcelain.  It can also be used on stone, travertine, terracotta, slate, sandstone, flagstones, quarry tiles and glazed ceramic.  (If you’re removing residue from a previously sealed stone tile, a sealant should be reapplied after cleaning and when the surface is sufficiently dry; this may take a minimum of 24 hours.)

Ongoing maintenance

To thoroughly clean a porcelain patio, we recommend LTP Grimex. Grimex can be used at different dilutions depending on the severity of staining.  Tiles are washed, using a brush or garden broom, and rinsed with clean water.   

For periodic cleaning, you can also use LTP Porcelain Floor Tile Cleaner.  This detergent can be used inside and outside, so it’s especially practical for surfaces installed from home to garden, through bi-fold doors.  Just dilute 2 or 3 capfuls in a bucket of warm water – or 5 on dirtier floors – wash the floor and allow to dry.   This product doesn’t require rinsing. 

To remove other stains from outdoor slabs, solutions include LTP Blackspot & Algae Remover, LTP Rust Stain Remover and, for efflorescence, LTP Cement Grout & Salt Residue Remover.  All three treatments are safe to use on porcelain and stone tiles.   

For more expert advice and information, contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

The idea of adopting a regular cleaning regime for outdoor tiles may seem a little strange here in the UK.  But, elsewhere in Europe, regular mopping and cleaning of outside spaces is commonplace. As our weather can be rather unpredictable, there’s perhaps an even greater need to keep on top of outdoor surfaces; it will make a big difference to the general appearance and it will reduce the need for future intensive cleaning and sealing.

How to maintain a seamless aesthetic

Step One: Protection

STONE PATIOS:  External stone tiles will benefit from a protective seal, just like internal stone tiles.  Treatments designed for outdoor surfaces tend to be slightly different from indoor products; rather than just protecting against water and stains, they will also protect against weather and efflorescence, and help prevent the formation of moss and mould, etc.  Water-based treatments, like LTP External Stone Sealer, now offer even greater performance than traditional spirit-based products.  They’re also much safer to apply, more eco-friendly and you can apply them over residual moisture, rather than having to wait for days on end until a surface is completely bone dry.

Before applying LTP External Stone Sealer, we recommend a first wash with a dilute solution of LTP Grimex (1:10). This will remove any fixing residues. The wet surface should be scrubbed, using a white pad, rinsed and left overnight to dry.  LTP External Stone Sealer is then applied with a foam roller or paint brush.  See the Datasheet for more information on application, coverage and preparation of older surfaces –  or link to the product page and watch the Video Aid.

PORCELAIN PATIOS:  Matt porcelain tiles (which are normally used outside) don’t need to be sealed in the traditional way.  However, because they are generally textured (to create a non-slip surface), they can be prone to grout staining.  Fixing residues and dirt become trapped in the ‘high-low’ surface, creating unslightly white marks which are hard to remove.  This residue makes ongoing maintenance more difficult and potentially creates a slip hazard.

To reduce the risk of staining, a barrier treatment can be applied before grouting. We recommend LTP Porcelain Tile Protector which provides a number of benefits: 

1. It prevents grout and resins from taking hold.  
2. It makes the removal of any residues much easier, should they occur. 
3. Porcelain needs to be kept as wet as possible during installation, to improve and increase grout working times.  The protector does this, which also aids points 1 and 2.  
4. A further coat applied after installation will make ongoing maintenance easier too.

Tiles should be clean and dry before applying LTP Porcelain Tile Protector.  Like the stone sealer, it might be necessary to give the surface a first wash with a dilute solution of LTP Grimex, at a 1:5 dilution, using a white pad. The tiles should then be rinsed and left overnight to dry before applying the Protector.  

Before grouting, LTP Porcelain Tile Protector should be applied evenly to the surface using a broad paint brush, foam roller or light pressure sprayer. Allow 30 minutes drying time and then apply a second coat. The surface should then be left to cure for a minimum of one hour before grouting or pointing. Once the grout is dry, and all residues have been removed, a further coat of Protector can be applied to the tiles and the grout joint. 

How to maintain a seamless aesthetic

Step Two: A regular maintenance regime

Whilst it may not be practical to mop the patio as often as indoor tiles, it’s worth giving it a thorough clean every couple of months or so – ideally, three times during late spring/summer and a couple of times during the winter.    Surfaces that are regularly cleaned will be easier to keep clean – and it will help to maintain that aesthetic.

NB. A blast with a jet wash may seem like the best method but it will only wash dirt off the tile surface, whereas as a specialist treatment will react with stubborn, ingrained residue & organic matter and help break it down.  This is especially important with porous surfaces, like limestone and sandstone.

For a thorough clean, we recommend LTP Grimex for stone and porcelain tiles. Grimex can be used at different dilutions depending on the severity of staining.  Tiles are washed, using a brush or garden broom, and rinsed with clean water.

For periodic cleaning of porcelain tiles, you can also use LTP Porcelain Floor Tile Cleaner inside and outside.  Just dilute 2 or 3 capfuls in a bucket of warm water – or 5 on dirtier floors – wash the floor and allow to dry.   This product doesn’t require rinsing. 

To remove specific stains from outdoor slabs, like black spot and algae, rust or efflorescence, there are targeted treatments. These include LTP Blackspot & Algae Remover, LTP Rust Stain Remover and, for efflorescence, LTP Cement Grout & Salt Residue Remover.  All three treatments are safe to use on stone and porcelain tiles.   As with routine cleaning, it’s best to remove stains on a regular basis, especially black spot and algae; this will break down microspores before they colonise within the stone, and prevent slippery residue from building up on all types of tile.

For more advice and information about LTP’s range, please call 01823 666213 or email info@ltp-online.co.uk

LTP’s external porcelain range includes eight core water-based treatments, for the care and protection of new and existing surfaces.  The first line of defence – LTP’s Porcelain Tile Protector – prevents grouts and resins from ‘taking hold’ and makes it easy to wipe residues away.  It also improves and increases grout working times by ensuring that surfaces stay wetter for longer.  A further coat after installation also makes ongoing maintenance easier. New deep cleaner, LTP Black Spot & Algae Remover, targets organic residue and stains caused by damp and slippery leaf matter, giving results in as little as two hours. Other treatments include LTP’s Porcelain Tile Cleaner – which can be used indoors and outside; two heavy-duty cleaners – LTP Solvex and Grimex – and three stain removers: LTP Grout Stain Remover, LTP Cement, Grout & Salt Residue Remover and LTP Rust Stain Remover.

To find out more about the external porcelain package – and for more advice and information about LTP’s range – please call 01823 666213, email info@ltp-online.co.uk or visit https://www.ltp-online.co.uk

More of a process than a reaction, efflorescence is made up of soluble salts and moisture that rise, evaporate and leave a crystalline salt deposit behind.  It can occur after exposure to moist or cool conditions, or more gradually, and it’s often a seasonable problem.  Standard cleaning products won’t effectively remove it and brick acid – a traditional acid cleaner – is often recommended by the building trade as a go-to solution.  There are many reasons why this shouldn’t be used.  Brick acid is hazardous and corrosive.  It often has a hydrochloric base which effectively strips a surface of its top layer. It’s especially damaging to acid-sensitive materials, like limestone, where it effectively eats away at the surface.

To allow safe, effective removal, LTP has developed a Cement, Grout & Salt Residue Remover which has a synthetic base.  The acid-replacement treatment can be used on all types of tile and natural stone surfaces, except those with a polished finish.  This means that it can be safely applied to unpolished acid-sensitive surfaces, including limestone and travertine, as well as all types of masonry.  It can also be used on porcelain, glazed ceramics, quarry tiles and terracotta, slate, sandstone, granite and unpolished natural stone – indoors and outside. The treatment also removes rising salt caused by substrate moisture and spot fixing – as well as cement and grout residues.

When using cleaning chemicals, always wear protective gloves, clothing and eye protection.  Before treating a large area, always carry out a test on a small, inconspicuous area. To see how the treatment is applied, watch the video aid and carefully follow the application instructions.  There’s also more information on the LTP Technical Data Sheet.

To remove mild staining and to treat non-absorbent surfaces dilute 1 part of the Remover with 4 parts of cool water. Always dilute the treatment by adding it to water, rather than the other way around. Apply with a cloth or sponge wrung out in the solution. Leave to act for up to 30 minutes. Wipe away the released surface residue with a sponge and cool, clean water.

For more severe staining, use a 1:1 dilution and, if necessary, agitate the surface with a scrubbing brush.  Leave to act for 5-10 minutes, keeping the surface wet with additional Remover. Wipe away the residue and rinse, as before.

In extreme cases, the Remover can also be applied neat and the surface agitated with a nylon pad, scrubbing brush or mechanical scrubber.  Residues should then be removed straight away and the surface rinsed immediately.

All LTP treatments are made and stocked in the UK.  To shop and find out more, visit http://www.ltp-online.co.uk.  For further information, contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

A thorough sweep

A deep down clean

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

Removing black spot and slippery matter

 

If your patio is prone to black spot, lichen, moss and algae, it’s worth targeting this now too.  Periodic treatment with LTP Blackspot & Algae Remover will break down microspores and black spot ‘hyphae’ before they colonise within the stone. LTP Blackspot is acid-free, so it’s safe to use on all types of paving, even acid-sensitive stone.  However, it does contain a bleaching action to remove stains, so always carry out a test on an inconspicuous area first.

How to apply LTP Blackspot & Algae Remover:

1. Apply neat Blackspot onto pavers with a plastic watering can or light pressure garden spray.
2. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
3. Hose off thoroughly with clean water.  

Stopping water ingress

 

1. Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar. This will stop the ingress of water and will help protect paving during the freeze and thaw cycle next winter.

Added protection for the seasons ahead

 

If your patio hasn’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

 

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush, as shown in the Video Aid.  It can be applied over residual moisture and it will protect pavers from stains, weathering, damp and efflorescence. It’s also UV resistant and non-yellowing.  LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase working times of grouts and jointing compounds.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

 

To find out more, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Black spot – which can be black or white - originates from plants and trees. It’s a dust-like lichen microspore carried by the wind and rain.  It colonises on stonework, taking about 2-3 years to get really established below the surface.  Black spot thrives in damp, shady places, sending its tendrils or ‘hyphae’ down into the stone’s pores, searching for nutrients.  It’s a particular menace in porous stone, as its open texture enables the microspores to spread more easily, but even less porous materials like porcelain aren’t immune.  Here, the lichen can still create a slippery residue on the tile surface.  

Most people try to remove it with a pressure washer and, sometimes, a dose of household cleaner.  This doesn’t work because hyphae become anchored into place below the surface.  In fact, the extra dose of water only makes conditions even better for the rampant lichen.  Also, pressure washing can damage the surface of the stone, loosen the grout and, if any protective sealer is applied, it will damage that too.

A specialist, two-pronged attack is necessary in order to remove black spot stains and the microspore colonises below the surface.  Any treatment used needs to have a bleaching action, to restore the colour of the tile or paver.  It also needs to target the hyphae below the surface.  But care needs to be taken.  If a treatment is acidic, it could damage acid sensitive material and erode the grout joint.

We’ve recently introduced a treatment called LTP Black Spot & Algae Remover that can be used on all types of natural stone, concrete, brick and porcelain.  It removes organic residues – including black spot, lichen, moss and algae – shifting the surface stains and breaking down the hyphae below the surface, preventing regrowth.  When applying the remover, it’s important to treat the whole area of paving, for a uniform appearance.  It should also be left to act for the correct amount of time, so that it’s able to penetrate deep into the porosity of the stone, where the black spot has colonised; if these hyphae are left untreated, they will spread back to the surface and throughout the stone.  A second treatment may be necessary if the black spot is really established.  After treatment, it’s worth protecting the surface; we recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector, for matt porcelain pavers.  Both will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot – something that may become even more of a problem, as our winters warm up.

Patio, before and after treatment with LTP Black Spot & Algae Remover

To find out more, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

If, like us, you’ve seen lots of articles on deep cleaning, you may be tempted to try out some of the popular ‘cleaning hacks’.  Many people are recommending mixtures of vinegar, soda crystals, bicarbonate of soda, water and lemon to make disinfectants, all-purpose cleaners and limescale removers.  The problem is that lots of natural materials, like limestone and marble, are very sensitive to acid and alkaline.  Vinegar and lemon are both very acidic – and soda has high alkaline levels.  Both can erode or ‘eat away’ natural surfaces like stone floors, tiles, countertops and mosaics – and damage any protective sealer that’s been applied.  These surfaces should always be cleaned with a gentle pH-neutral product.

It’s useful to think about the pH scale before choosing – or making – a cleaning product. Running from 0-14, anything that scores a 7 is considered neutral and safe to use on all surfaces. Anything below a 7 is considered acidic and anything above a 7 is considered alkaline.  Acidic solutions are best at removing calcium, rust and other mineral ‘non-organic’ stains. Lemon and vinegar score around 3 on the pH-scale and toilet bowl cleaner is the most acidic, with a pH of 1-3. At the alkaline end of the scale, you’ll find bleach and many tile cleaners; they have a high pH value of 11-13 and are best at removing ‘organic’ dirt, grease and oil.  

Surprisingly, many ‘toxic-free’ products can also cause damage to natural surfaces. Look closely at the label on a leading anti-bacterial all-purpose cleaner and it states that it isn’t suitable for natural stone because it is acid-based.  It’s always worth reading the small print.  

Another common misconception is that an extra dose of the right product will do an even better job.  But this can actually create problems. Using a lower dilution may mean that a surface needs to be rinsed; if it isn’t, the residue may form a film on the surface, which could make future cleaning more difficult.  

LTP’s range includes lots of different products for tackling specific jobs – and removing stains – as well as pH-neutral cleaners that are safe and all purpose.  LTP Stonewash is a great all-rounder, if you’re looking for a combined bathroom and kitchen cleaner for all types of tile and stone.   The LTP website also includes various Video Aids and others resources to help you Identify your surface and calculate how much product you need.

To see the whole range, find our more and stock up with the right product, visit https://www.ltp-online.co.uk, or contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Before targeting the stain, the limestone surface should be given a thorough clean, as described in our How to clean limestone floors blog. Limestone is acid-sensitive, so this should be carried out with a pH-neutral detergent, as explained in the article. General household tile and surface cleaners tend to be acidic, so should be avoided. They can etch stone and grout, dull a polished surface and will also damage any protective sealer applied.

If the stain still remains after a thorough clean, we recommend using LTP Spot Stain Remover and LTP Fullers Earth.  The Remover will dissolve the stain and the Fullers Earth, which is a clay-like substance, will absorb it ‘by capillary’, pulling it to the surface. 

To use LTP Spot Stain Remover and Fullers Earth:

• Apply the Remover directly onto the stain, making sure to spread the solution out to the edge of the tile up to the grout joints.

• Leave to absorb into the surface for about 5- 10 minutes. (NB. This process might remove some stains.  If it does, wash the surface with a dilute solution of LTP Grimex, rinse and leave to dry before resealing.)  For stubborn stains, continue with the dual treatment after the 5-10 minute wait.

• Powder the stain with Fuller’s Earth. Wet the powder again with the Remover and then cover it once more with the Fuller’s earth. 

• Leave for 24 hours. 

• Brush away the powder and wash with a dilute solution of LTP Grimex. 

• Rinse well with a sponge and water, and leave to dry before re- sealing.

Once the floor is clean and dry, we recommend that the surface is resealed with either with LTP Mattstone or its water-based equivalent, LTP Mattstone H20 for a natural finish - or LTP Ironwax Satin for a semi-gloss surface finish.  For instructions on application, please see the technical data sheets on each page link.

For more expert advice and information, contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

Kitchen floors and bathroom tiles are two areas that often need a thorough deep clean, to remove a build-up of organic dirt and stains that thrive in moisture.  Grout and silicone joints, and tiled shower areas can be particularly tricky to clean and tough cleaning products may seem like the best solution…. but take care.  Many of the ‘best-selling’ products, and sometimes even those from eco ranges, contain acid which can damage tiles, grout, chrome fittings and any protective sealer that’s been applied.  To deep clean safely, we recommend LTP Grimex.  As the name suggests, it removes grime and stains, including oil, grease, ingrained dirt and wax.  It’s safe to use on natural stone, as well as porcelain and ceramics, and it comes in a one litre and five litre cartons, as well as a trigger spray for more precise application.

For grout and silicone that’s stained with mould spores, we recommend LTP Mouldex.   This treatment comes in a pump spray and its formulated to cling to surfaces, which targets the treatment and prevents run-off.   Mouldex has a bleaching action which helps restore colour and it’s antibacterial, so it helps prevent mould regrowth.  It can be used on natural as well as artificial stone – and on coloured grout – but it’s always best to test first, in an inconspicuous area.

How to use LTP Grimex

For areas that are slightly grubby – and for absorbent tiles – dilute one part of Grimex to ten parts of warm water.  Apply with a cloth or mop and rinse with clean water. 

For dirtier surfaces, use a stronger 1-3 dilution and agitate the surface with a brush.  Let the solution act for 5-10 minutes, mopping with additional solution to keep the tiles wet, and agitate again before mopping up and rinsing thoroughly with clean water.

For built-up grime and stubborn stains, Grimex can be used neat and then thoroughly rinsed.

Sometimes, tiles that have been deep cleaned with a low dilution of intensive cleaner will need to be resealed.  The easiest way to see if a sealer is still performing is to carry out a water test:

1. Drop a bead of water onto the surface.
2. If it sits in place, it is well sealed. If the water quickly soaks into the tile or makes the surface look darker, then it needs resealing.

To top up protection, choose a suitable sealer from LTP’s range and carefully follow application directions.

How to use LTP Mouldex

Before applying the treatment, make sure that tiles are completely dry.  Spray Mouldex 5-10cm from the surface and leave it to act for 45 minutes.  Then, apply a little water and agitate with a stuff brush to help lift the grime and dirt.  Finally, rinse the surface thoroughly with water and a clean sponge.  For silicone and elastic grouting, and for stubborn stains, the treatment can be left overnight.    NB.  Mouldex shouldn’t be used with acid-based residual grout removers or other acid- based cleaners.

Other recommended treatments

Grimex Spray is really handy for cleaning wall tiles, work tops, grout lines and fireplace surrounds.  It’s sprayed directly onto the surface, once any dust has been removed, and left to act for a few minutes.  A little water can be applied and the surface can be agitated with a brush or mild abrasive pad if need be – and the treatment can be repeated if necessary. 

We also recommend LTP Multiclean spray for grease and limescale removal in kitchens and bathrooms.  It can be used on glazed ceramics, glazed or un-glazed porcelain, sanitary ware, chrome, glass laminate and stainless steel.  The cleaner should be sprayed 20 cm from the surface, wiped over with a clean, damp cloth, rinsed and left to dry. For stubborn stains, LTP Multiclean can be applied directly to problem areas and left for 15-20 minutes before agitating and rinsing.

For more advice, please visit https://www.ltp-online.co.uk or contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

About porcelain pavers

External pavers tend to have a matt finish and, unlike polished porcelain, they don’t need to be sealed, which is a big bonus. Most slabs also have a textured surface which gives good grip underfoot – essential in an outdoor location. However, dirt and residue from grout can easily become trapped in the ‘high-low’ surface, compromising the aesthetic, making maintenance more difficult and potentially creating a slip hazard.

About two-part jointing compounds

Two-part brush-in jointing compounds are often used for patio installations as they create a good, strong joint that can withstand the effects of pressure washers and other potential erosion. Once the grout is mixed, it has a limited working time. It’s generally applied to a wet surface and brushed into the joints. The pavers are then rinsed and swept. Often, a white residue remains on the surface of the tile which can be very difficult to remove, especially on textured surfaces. To safely remove these stains - without damaging the joint or the paver - we recommend LTP Solvex, a non-caustic intensive cleaner/stripper, which helps to soften the resin residues allowing for easier removal. Application is normally followed by a final wash with LTP Grimex cleaning solution before rinsing down.

How to use LTP Solvex & Grimex

1. Pour Solvex directly onto the paver.
2. Apply generously by dabbing onto stains with a cloth or brush. NB. Always wear gloves to protect your hands.
3. Work in manageable areas; normally in strips as far as you can reach without treading into the solution; do not brush out.
4. Leave for up to 30 minutes, but don’t allow the solution to dry out. If it starts to dry out within this time-frame, apply a little more solution.
5. Use a coarse, stiff brush or LTP Black Emulsifying Pad to remove the softened coating from the surface of the paver. Repeat this process if some staining remains.
6. Wash down the pavers with LTP Grimex, diluted 1:3 with water.
7. Rinse with plenty of water and leave to dry.

As well as tackling brush-in grout stains, LTP Solvex can also be used to remove residual epoxy grout, wax, oil, silicone, acrylic and polyurethane sealer from porcelain, as well as stone, travertine, terracotta, slate, sandstone, flagstones, quarry tiles and glazed ceramic. Where surfaces are sealed, a sealant should be reapplied after cleaning and when the surface is sufficiently dry; this may take a minimum of 24 hours.

The benefits of a barrier treatment

To reduce the risk of staining in new patio installations, a barrier treatment can also be applied before grouting. We recommend LTP Porcelain Tile Protector which provides a number of benefits: as well as preventing grout and resins from jointing compounds taking hold, it also makes the removal of any residues much easier should they occur. The protector also helps improve and increase the working time of grouts and jointing compounds, and when a further coat is applied after installation, it makes ongoing maintenance easier too. Find out more about the treatment and link to the video aid here.

To reduce the risk of staining in new patio installations, a barrier treatment can also be applied before grouting. We recommend LTP Porcelain Tile Protector which provides a number of benefits: as well as preventing grout and resins from jointing compounds taking hold, it also makes the removal of any residues much easier should they occur. The protector also helps improve and increase the working time of grouts and jointing compounds, and when a further coat is applied after installation, it makes ongoing maintenance easier too. Find out more about the treatment and link to the video aid here.

For more expert advice and information, contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

Home-made cleaning hacks & steam cleaning
Homemade solutions and steam cleaning are two other cleaning methods to avoid. The most common homemade hacks - vinegar, lemon and baking soda – are all very acidic and will damage limestone. Bleach should also be avoided; whilst it is alkaline, rather than acidic, it is still too harsh for natural stone. Steam cleaning isn’t recommended either, as it can damage a stone sealer and compromise protection. Intense heat can also cause ‘spalling’ or flaking of the limestone.

What to use for routine and deep cleaning
A regular ‘routine’ clean will maintain a hygienic environment and a tile’s aesthetic. Once grease and dirt builds up on a surface, tiles will be more difficult to clean, and they may become slippery. A periodic deep clean in high traffic areas may also be necessary. Often, the same detergent can be used for routine and deep cleaning, with the dilution ratio and method adjusted in each case. This is the case with LTP Grimex – the detergent that we recommend for limestone floor tiles.

Methods for routine and deep cleaning
Routine cleaning with LTP Grimex:

1. Sweep or vacuum the floor, to remove dust and loose dirt.

2. Dilute one part LTP Grimex in 10 parts warm water.

3. Apply with a cloth or mop. Wipe off thoroughly with a clean damp cloth.

Deep cleaning with LTP Grimex:

1. Sweep or vacuum the floor to remove dust and loose dirt.

2. Dilute one part LTP Grimex in 3 parts warm water.

3. Apply liberally, spreading over the surface of the tiles. If necessary, agitate with a scrubbing brush.

4. Leave to react for 5-10 minutes, keeping the surface wet with additional solution. Agitate surface again, mop up and rinse thoroughly with clean water.

How to maintain a seamless surface, from home to garden

If the same limestone tile is installed from inside to outside - for example, through bi-fold doors - it’s important to maintain both areas to avoid an unsightly contrast. Whilst LTP Grimex can be used on outdoor slabs, a specialist external treatment will help tackle issues specific to paths and patios, like black spot, lichen and moss which cause discoloration and create a slip hazard. We recommend LTP Blackspot & Algae Remover.

How to remove stubborn stains
If staining is still present on a floor that has been deep cleaned, we recommend use of a specialist treatment. Various solutions are available to safely remove common stains, like oil and grease, rust, wax, grout and salt residue. LTP’s full range of intensive cleaners, for all tile types, are shown here. Always check that the product is suitable for limestone. If the treatment is designed to strip the surface, you will need to re-apply a sealer to reinstate stain protection.

For more advice on the best maintenance regime for your limestone floor, please call the LTP technical team on 01823 666213 or email info@ltp-online.co.uk

As well as marks from external sources, discolouration can appear naturally within hard ferrous-type stone pavers, including sandstone, slate and granite. These stones naturally contain iron which can oxidise or rust when it comes into contact with moisture, from rain, washing with excessive amounts of water – for example, with a jet wash or patio cleaner – and from contact with some cleaning products.  In addition, certain acidic cleaners, like brick acid and cement removers, also contain ingredients that can stain/damage limestone and sandstone pavers, and can accelerate oxidisation in hard ferrous stone.  Ironically, these same products are often used to remove rust marks and can create an even greater problem.  So, it’s really important to use the correct rust remover.

For safe removal of rust, we recommend one of two products, depending on the stone type and the nature of the stain – LTP Rust Stain Remover and LTP Ferrex.  Both treatments can also be used indoors.

LTP Rust Stain Remover is a non-caustic solution that removes marks caused by external sources – like furniture and firepits.  It is safe to use on all polished and unpolished natural and artificial stone tiles.  After applying, the reaction between the rust stain and the treatment causes it to turn purple, so you can clearly see the product working. More stubborn stains may need more than one treatment. If this is the case, we recommend leaving 15 minutes after the first dosing, then removing the rust residue with a sponge or water and repeating until all of the ‘purpling’ has stopped.  Once there is no colour reaction, all of the iron has been removed. 

Here’s a link to more information, including a Video Aid which shows the treatment being applied, step by step.

LTP Rust Stain Remover – directions for use

1. Ensure that the surface to be treated is completely free from dust and dirt before application. If necessary, first wash the pavers with LTP Power Stripper diluted 1:10 with water.
2. SHAKE WELL BEFORE USE. Do not dilute. Completely cover the rust stain with the product. Leave to act for 15 minutes. The product colour will change to a deep purple as it reacts with the rust. Once the indicated time has elapsed, remove the residue and rinse the surface thoroughly with plenty of water and leave to dry. Repeat application until the stain is completely removed.

LTP Ferrex is a professional product designed to remove the naturally occurring particles of iron from within acid-resistant hard ferrous stone. Ferrex is an acid-based cleaner but it's the right kind of acid for harder stones.  It is, however, not suitable for use on softer limestones, marble or pavers with a highly polished finish. It’s worth diluting the product with water before use and testing it at different strengths on a spot clean basis; in this way, you can establish the best dilution for your tile before general application. Here’s a link for more information on application and dilutions. Treatment to remove the iron can take between 3-6 hours. The reaction won’t be visible like LTP Rust Stain Remover; the treatment should be left to work and no agitation is generally needed. Once the staining has disappeared, rinse well with water and leave the pavers to dry. 

LTP Ferrex – directions for use

1. After testing on a small area, apply the solution to the surface and spread out evenly. For external applications garden sprayers can be used.
2. For severe staining, surfaces should be agitated using a short haired scrubbing brush or black emulsifying pad.
3. After 3 – 6 hours, rinse with plenty of clean water. If traces remain after a couple of days, repeat the process.
4. After treatment, we recommend that the surface is protected from water with an impregnating sealer like LTP External Stone Sealer or LTP Mattstone H20.  This will greatly reduce the risk of rust discolouration returning.

Some natural stones will appear darker after treatment, as the product continues to work following the initial application. This is normal and the darkening effect will gradually subside.

For more advice, visit our blog section on the website or https://www.ltp-online.co.uk.  To contact the LTP team direct, call 01823 666213 or email info@ltp-online.co.uk

Time to tidy

Whilst most aluminium and wooden furniture can be left outdoors year-round, materials like wicker and rattan generally need to be protected – under covers or indoors.  It’s a few weeks (hopefully) before we need to pack things away but it’s worth planning ahead now and clearing some storage space.

At this time of year, fallen petals and leaves quickly start to build up, especially behind pots and containers.  If left in place, they’ll quickly decay, leaving stains and slippery deposits.  It’s worth emptying and stacking pots before the temperatures drop – especially if they’re not frost-resistant.  Surfaces can then be swept with ease and any weeds removed.  The clearer the surface now, the less dirt will be picked up on footwear over the winter months. 

The pre-winter clean

To properly remove stains and ingrained dirt, we recommend a thorough wash with LTP Grimex.   A blast with a jet wash may seem like a quicker and easier option but it will only wash dirt off the surface.  A specialist treatment will react with ingrained residue and organic matter, drawing it out of the stone’s porosity.  

Before cleaning the patio, remove furniture, pots and other objects.  Then, test your cleaning solution on an inconspicuous area.

How to apply LTP Grimex:

1. To remove mild staining, dilute one part of Grimex with 10 parts of warm water. Wash the surface thoroughly, using a brush or yard broom, and rinse with clean water.  
2. For more severe staining, dilute one part of Grimex with 3 parts of warm water.  Agitate with a scrubbing brush and leave to act for 5-10 minutes, adding more solution to keep the surface wet.  
3. Sweep up any residue and rinse thoroughly with clean water. 

If your patio is prone to black spot, lichen, moss and algae, it’s worth targeting these now too.  Periodic treatment with LTP Blackspot & Algae Remover will break down microspores and black spot ‘hyphae’ before they colonise.  LTP Blackspot is acid-free, so it’s safe to use on acid-sensitive stone, but it does contain a bleaching action to remove stains.  So, as before, test first on an inconspicuous area.  

How to apply LTP Blackspot & Algae Remover:

1. Remove furniture and other items from the area to be treated.
2. Apply neat Blackspot onto clean pavers with a plastic watering can or light pressure garden spray.
3. Leave to absorb for 2-4 hours; the product will begin to fizz as it gets to work.
4. Hose off thoroughly with clean water.  

Stopping water ingress

Once you’ve cleaned your pavers and they’re dry, it’s an ideal time to replace any lost jointing sand or cement mortar.  This will stop the ingress of water and will help protect paving during the freeze and thaw cycle of winter.

Added protection

If your patio hasn’t been sealed, consider applying a protective treatment. We recommend LTP External Stone Sealer for natural stone and our new barrier treatment, LTP Porcelain Tile Protector for matt porcelain pavers.  Both are non-film forming and will help prevent the absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.  

LTP External Stone Sealer is a water-based, impregnating sealer that’s applied using a foam roller or paint brush, as shown in the Video Aid.  It can be applied over residual moisture and will protect pavers from moisture, stains, weathering and efflorescence.  It’s also UV resistant and non-yellowing.  

LTP Porcelain Tile Protector creates a barrier against organic matter and makes ongoing maintenance easier.  On newly laid tiles, it also protects against staining and helps increase working times.  Our External Porcelain Tile guide includes lots of useful information on cleaning, protecting and caring for these surfaces. 

To find out more, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

Ferrous stones naturally contain iron which can oxidise or rust when it comes into contact with moisture, from rain or contact with cleaning products. This reaction causes brown stains and discolouration which can be difficult to remove. Certain acidic cleaners, like brick acid and cement removers, also contain ingredients that can accelerate oxidisation. These same products are often used to remove rust marks and can create an even greater problems. LTP Ferrex is specifically formulated to safely remove these blemishes from acid-resistant stone.

Before application, surfaces need to be swept to remove dust and dirt. Ferrex is then diluted – between 1:1 and 1:3 depending on the degree of staining – and applied to the surface. Garden sprayers can be used for outdoor treatment. Stone that is badly stained should be agitated with a short-haired scrubbing brush or black emulsifying pad. After 3-6 hours, the surface should then be rinsed with clean water. If any stains remain, application can be repeated after a couple of days. Outdoors, application should be planned during fair weather, as treated surfaces should be protected from water for a couple of days following application. For further protection, we recommend follow-on treatment with LTP External Stone Sealer – an impregnating sealant that provides water resistance and reduces the risk of oxidisation.

LTP Ferrex is available on-line and from our recommended stockists, in one litre and five litre units. Please note that this treatment isn’t suitable for acid sensitive surfaces, including highly polished natural stone, limestone, marble, enamel, zinc and other acid sensitive metals/materials. Some stones may also become slightly darker following application, so we recommend testing on a small area before full application.

To find out more, please visit https://www.ltp-online.co.uk/prod/ltp-ferrex or contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

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Tiles generally fall into one of two categories – those with a polished or glazed finish, and unpolished or ‘matt’ tiles.  The glossy sheen of a polished tile is created as part of the manufacturing process and, as a result, micro-pores in the surface of the porcelain are opened up.  This makes the surface more susceptible to staining.  Some tiles are sealed as part of the manufacturing process, whilst others are left unfinished.

Protecting polished porcelain

Most polished porcelain needs sealing.  You can carry out a simple test on a spare tile/off cut by marking it with black pen. If the pen mark can be wiped off with a small amount of white spirit, then the tile is sealed and no further action is required.  If not, then we suggest sealing the tile with LTP MPG prior to grouting to ensure there is no ‘framing ‘from the grout residues.  Most polished porcelain will have had some factory wax-type seal applied, so it’s always advisable to clean the tiles back with LTP Grimex before sealing with LTP MPG.

What’s recommended for unpolished tiles?

Unpolished tiles don’t need to be sealed – but they will benefit from a barrier treatment.  Many will be textured and even the most subtle undulation will collect dirt or residue – this can be a particular issue during installation, when grout and other residues will be become trapped in the ‘high-low’ surface.  Trapped residues will compromise the look of the tile, make it more difficult to maintain and could build-up and create a slip hazard.

Patio porcelain pavers are particularly suspectible, as they will often have a highly textured surface to give them grip underfoot.

To prevent these issues, we recommend the LTP Porcelain Protector.  It’s a water-based ‘pre-and-post-grout’ treatment that’s designed to protect the tiles from staining and allow easy removal of residues like cement-based grout, two-part resin based jointing compounds and stubborn dirt.

How does the Porcelain Protector work?

The Porcelain Protector creates a barrier without forming a film or altering the tile’s appearance.  It works in two ways: it helps to improve and increase the working time of grouts and jointing compounds, and it greatly reduces the risk of cement and resin staining.

How do you apply the Porcelain Protector?

You can use a spray, roller or brush – here’s a link to more information, including a Video Aid.  You apply the Protector before grouting or pointing. Then, once residues have been removed and the surface is dry, a further coat can be applied to the tiles and joints, to help assist with future cleaning and aftercare.  Here’s how:

Before applying the Protector, give the tiles a thorough clean.  We recommend using a dilute solution (1:5) of LTP Grimex.  Rinse well to remove residues and leave to dry.

Shake the Protector bottle before use. Then evenly apply the treatment using a broad paint brush, foam roller or light pressure sprayer. Allow to dry for 30 minutes.  Then, apply a second coat. Leave this to cure for a minimum of one hour before grouting or pointing. Once pointing is dry, and all residues have been removed, a further coat of Protector can be applied; make sure that you cover the joints as well, so that they are protected.

For more information, contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

When the same material is used internally and externally, it doesn’t take long for the two areas to contrast. This is particularly evident in stone installations, where flush surfaces are continued through bi-fold doors. Generally, the indoor slabs are sealed and the outdoor surface isn’t, so it very quickly becomes darker, and dirtier. One reason for a reluctance to seal outdoor stone is that traditional spirit-based products – often considered the only viable option – can only be applied when a surface is bone dry. However, high quality water-based or ‘acrylic’ sealers are now equal to and often superior to their solvent-based equivalents.

Water-based sealers won’t wash away!

Once applied and cured, water and spirit-based sealers actually function in a similar way. They’re both tough, durable and provide stain protection. Spirit and water-based solvents are simply used to facilitate application. Once a surface has dried, the spirit evaporates into the air and releases VOCs into the atmosphere, so they don’t actually contribute to a treatment’s ongoing performance. Water-based treatments enter a stone’s porosity in the same way but as they tend to be VOC-free they don’t have the same negative impact.

As well as offering high performance, with low VOC’s and low odour, quality water-based sealers – like LTP Mattstone H2O - can be applied over residual moisture, making outdoor treatment far more feasible year-round. They are also fully transparent to UV light, so they won’t undergo the photochemical breakdown experienced by some more UV-absorbent solvent-based sealers; this UV resistance can lead to extended longevity and protection, especially when used outdoors. Easier handling and storage are also big bonuses and, as a general rule, water-based sealers tend to go further than solvent-based sealers, with a typical extra coverage of between 10% and 20% on most surfaces.

A quality water-based sealer will offer protection against the elements, from frost, lichen and algae, plants and leaf matter, and BBQ spillages. It’s also worth mentioning that sealing, as opposed to not sealing, provides its own environmental advantages. The main one being that a sealed surface requires much less cleaning. This, in turn, reduces associated waste and water consumption and eliminates the need for more drastic intervention with harsh chemicals.

Refurbishing stone slabs

Existing stone patios and terraces will also greatly benefit from a protective seal. Before any treatment can be applied, the surface should be thoroughly cleaned; any residue that’s left in place will become sandwiched between the slab and the sealer, preventing the treatment from being absorbed into the stone’s porosity. Choose a patio cleaner like new LTP Blackspot & Algae Remover, to restore appearance before the surface is sealed and help prevent regrowth.

Porcelain patios need protecting too

Matt porcelain has become incredibly popular outdoors and it doesn’t need to be sealed – but it can be susceptible to staining during installation. The main issues relate to residues. When using a brush-in jointing compound, it’s very important to keep the surface of these tiles as wet as possible, so that any residue can be easily wiped away. Porcelain tiles can dry out quite quickly, causing an element of the resin within the compound to cling to the surface.

Whilst keeping the surface wetter for longer helps to improve and increase the working time of grouts and jointing compounds - and greatly reduces the possibility of grout and resin staining - problems can still arise. Dried on jointing compound can be difficult to remove and the residue left can ruin an installation. The textured nature of most external porcelains also makes it more difficult to apply grouts and jointing compounds. To prevent these issues, we recommend LTP’s Porcelain Tile Protector - a water-based ‘pre-and-post-grout’ treatment. The protector creates a barrier against stains and will help increase the working time of the grout and jointing compound. A barrier treatment will also make ongoing maintenance easier, as it will offer protection against dirt, moss and algae which can also quickly accumulate in textured natural-effect pavers.

Keeping surfaces shipshape

To help maintain a seamless aesthetic, fallen leaves should be swept up on a regular basis. Sycamores are a particular menace; aphids that live on the surface of the leaves excrete a sugary substance that provides a food source for algae. The combined sugar and bacteria leaves a telltale black spot stain and sometimes whole leaf prints on unsealed surfaces.

To clean slabs and remove slippery residue, choose a patio cleaner with a viscous formula to prevent run-off; once again, LTP’s Blackspot & Algae remover is a highly effective option. Treatment will also help prevent regrowth, saving time and money in the long-run.
For more advice and information about LTP’s range, please visit http://www.ltp-online.co.uk, tel. 01823 666213 or email info@ltp-online.co.uk

LTP has introduced a new stain removal treatment to its range. New Black Spot & Algae Remover restores appearance to natural stone, concrete, brick and porcelain. Giving results in as little as two hours, the treatment is ideal for deep cleaning new and existing paths, patios and driveways.

Made in the UK, the new treatment targets organic residues, including black spot, lichen, moss, algae and others stains caused by damp and slippery leaf matter. Before application, surfaces should be swept clean. The treatment is then applied neat, using a watering can or light pressure garden spray, and left to act for 2-4 hours. The fizzing formula breaks down residue and its bleaching action removes stains. Surfaces are then hosed with clean water. The remover can be used on dry and slightly damp surfaces and should be applied during a morning or afternoon of fair weather.

Newly cleaned surfaces can be protected with LTP External Stone Sealer or LTP Porcelain Protector. Both treatments create a barrier without altering surface appearance; this prevents absorption of moisture and organic particles, reducing staining and the spread of algae, mould and black spot.

The new treatment provides up to 25m2 coverage per five litres and is available from UK stock, alongside expert advice from LTP’s technical team. To find out more, please visit http://www.ltp-online.co.uk. For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

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Since moving from LTP in spring 2016, Emma has worked with Trade Price Stone, Sarsen Stone Group and, most recently, Devon Stone Ltd.   A vibrant ‘people-person’ with a great love of the industry, Emma’s looking forward to a new chapter, rekindling and building new relationships with LTP customers, and supporting the brand’s growing product range.

"Despite having moved onto pastures new three years ago, many of our customers still ask after Emma – so, we’re delighted to announce that she’s back!  Emma's role will be to work alongside Mark Atkins supporting our existing customers, as well as developing new markets for LTP,” explained Richard Osborne, LTP’s Managing Director.

Richard added, "Emma's vast experience of the stone and tile industry, her existing knowledge of sealing and cleaning issues, and her enthusiasm and energy all combined make this appointment one of the easiest we’ve had to make!”

To contact the team at LTP, please tel. 01823 666213 or email info@ltp-online.co.ukor visit http://www.ltp-online.co.uk.

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Set in 22 acres of Gloucesteshire countryside, the Grade II listed school was established in 1947, whilst the castle dates back to the mid-late 17thCentury.  Today, it is a day and boarding school for children from 2 to 13 years, and a member of the family-run Wishford Schools group.  The renovation of its fine Bath Stone exterior included ‘cutting out’ and repair of damaged areas, before treatment with LTP Mattstone to protect the stone from the elements.  All works were carried out by Mike Harris from Abingdon Stone, in line with school health and safety requirements.

LTP Mattstone is a natural finish impregnating sealer, which protects surfaces from staining whilst allowing them to breathe. The protective matt finish strongly repels water, oil and grease; it can be used on natural and artificial stone surfaces, inside and outdoors.

To find out more, please visit https://www.ltp-online.co.uk/prod/ltp-mattstone. For more information about Hatherop Castle School and the renovation, please visit https://www.hatheropcastle.co.uk and http://www.abingdon-stone.co.uk

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Well-used floors and bathroom tiles are two areas that often need a thorough deep clean, to remove a build-up of organic dirt and stains that thrive in moisture.  Grout and silicone joints, and tiled shower areas can be particularly tricky to clean and tough cleaning products may seem like the best solution…. but take care. Many of the ‘best-selling’ products – and sometimes even those from eco ranges - contain acid which can damage tiles, grout, chrome fittings and any protective sealer that’s been applied.

To deep clean safely, we recommend LTP Grimex.  As the name suggests, it removes grime and stains, including oil, grease, soot and wax.  It’s safe to use on natural stone, as well as porcelain and ceramics, and it comes in one litre and five litre cartons,as well as a trigger spray for more precise application.

For grout and silicone that’s stained with mould spores, we recommend LTP Mouldex.   This treatment comes in a pump spray and it's formulated to cling to surfaces, which targets the treatment and prevents run-off.   Mouldex has a bleaching action which helps restore colour and it’s antibacterial, so it helps prevent mould regrowth.  It can be used on natural as well as artificial stone – and on coloured grout – but it’s always best to test first, in an inconspicuous area.

How to use LTP Grimex

For areas that are slightly grubby – and for absorbent tiles – dilute one part of Grimex to ten parts of warm water.  Apply with a cloth or mop and rinse with clean water.

For dirtier surfaces, use a stronger 1-3 dilution and agitate the surface with a brush.  Let the solution act for 5-10 minutes, mopping with additional solution to keep the tiles wet, and agitate again before mopping up and rinsing thoroughly with clean water.

For built-up grime and stubborn stains, Grimex can be used neat and then thoroughly rinsed.

Grimex Spray is really handy for wall tiles, work tops, grout lines and fireplace surrounds.  It’s sprayed directly onto the surface, once any dust has been removed, and left to act for a few minutes.  A little water can be applied and the surface can be agitated with a brush or mild abrasive pad if need be – and the treatment can be repeated if necessary.

If surfaces have been sealed, you’ll need to re-apply a sealant after cleaning and rinsing, and having allowed the surface to completely dry out; we recommend a minimum of 24 hours.  If you need advice on the best sealant to use, get in touch or see the range at https://www.ltp-online.co.uk/cat

How to use LTP Mouldex

Before applying the treatment, make sure that tiles are completely dry.  Spray Mouldex 5-10cm from the surface and leave it to act for 45 minutes.  Then, apply a little water and agitate with a stuff brush to help lift the grime and dirt. Finally, rinse the surface thoroughly with water and a clean sponge.  For silicone and elastic grouting, and for stubborn stains, the treatment can be left overnight.    NB.  Mouldex shouldn’t be used with acid-based residual grout removers or other acid- based cleaners.

For more advice, contact the LTP team on tel. 01823 666213 or email info@ltp-online.co.uk

Suitable for use indoors and outside, LTP’s Porcelain Tile Protector protects unpolished tiles from staining and facilitates easy removal of residues of cement-based grouts and two-part resin based jointing compounds, as well as stubborn organic matter. The applied treatment creates a barrier, without forming a film or altering appearance. This helps to improve and increase the working time of grouts and jointing compounds - and greatly reduces the risk of cement and resin staining.

The new protector is easy to apply - with a spray, roller or brush – and tiles are treated before grouting or pointing. Once residues have been removed and the surface is dry, a further coat can be applied to the tiles and joints, to help assist with future cleaning and aftercare.

LTP Porcelain Tile Protector is manufactured by LTP in the UK and is available from UK stock, in one litre and five litre bottles. Other complementary treatments include LTP Grimex – a heavy-duty intensive cleaner that can be used before application of the Protector - and LTP Porcelain Floor Tile Cleaner – a highly effective no-rinse aftercare cleaner for indoor and outdoor spaces.

To find out more, please visit http://www.ltp-online.co.uk, tel. 01823 666213 or email info@ltp-online.co.uk

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The main issues relate to residues. When using a brush-in jointing compound, it’s very important to keep the surface of these tiles as wet as possible, so that any residue can be easily wiped away. Porcelain tiles can dry out quite quickly, causing an element of the resin within the compound to cling to the surface. The textured nature of most external porcelains also makes it more difficult to apply grouts and jointing compounds.

Whilst keeping the surface wetter for longer helps to improve and increase the working time of grouts and jointing compounds – and greatly reduces the possibility of grout and resin staining – problems can still arise. Dried on jointing compound can be difficult to remove and the residue left can ruin an installation.

In response, we’ve developed two new products for unpolished porcelain. Our new Porcelain Tile Protector is applied before grouting. Once it has dried it helps with cement and jointing compound release. For surfaces that have been stained, our new acid replacement Cement, Grout and Salt Residue Remover can also turn back the clock for cement stains. For removal of resin stains caused by jointing compounds, use Solvex.

Aftercare education is also very important. We’re routinely recommending that customers don’t stop at the bi-folds when they’re cleaning porcelain that’s installed from inside to out. They need to keep going and mop the patio too! This greatly reduces the need for intensive cleaning outdoors – although we have various eco-friendly options up our sleeve should the need arise!

Useful guide on the protection of External Porcelain Tiles.

For information on caring for natural surfaces, visit http://www.ltp-online.co.uk, tel. 01823 666213 or email info@ltp-online.co.uk. Or, for instant advice on-the go, visit http://www.ltp-productguide.co.uk

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The brainchild of entrepreneur and interior designer, Maddison Santamaria, Honey I’m Home is a stand-alone brand with ambitious plans. These include the opening of an Academy to teach upholstery, interior design and social media management, along with plans to help school leavers from underprivileged backgrounds break into the interiors industry. Its huge celebrity following includes Reality TV royalty, soap stars and industry movers and shakers, who turned out in force for the new showroom launch.

Described as “the most instagrammable showroom ever”, Honey I’m Home is unabashedly feminine. Sumptuous fabrics and a pink and gold colour scheme contrast beautifully with the Marmo Calacatta showroom areas, as well as worktops, fireplaces and external surfaces.

To find our more, please contact LTP on tel. 01823 666213, email info@ltp-online.co.ukor visit http://www.ltp-online.co.uk. For more information about Stone Super Store and Honey I’m Home, please visit:

http://www.stonesuperstore.co.uk

https://www.instagram.com/__honeyimhome__/

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Ideal for textured wood and stone-effect patios, the new Porcelain Tile Protector creates a barrier, without forming a film or altering appearance. This helps to improve and increase the working time of grouts and jointing compounds – and greatly reduces the risk of cement and resin staining.

The new protector is easy to apply – with a spray, roller or brush – and tiles are treated before grouting or pointing. Then, once residues have been removed and the surface is dry, a further coat can be applied to the tiles and joints, to help assist with future cleaning and aftercare.

LTP Porcelain Tile Protector is manufactured by LTP in the UK and is available from UK stock, in one litre and five litre bottles. Other complementary treatments include LTP Grimex – a heavy-duty intensive cleaner that can be used before application of the Protector – and LTP Porcelain Floor Tile Cleaner – a highly effective no-rinse aftercare cleaner for indoor and outdoor spaces.in staining.

For more information on the new treatment and LTP regimes, please visit http://www.ltp-online.co.uk, tel. 01823 666213 or email info@ltp-online.co.uk

ends –For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01590) 622521 or email angie@afpr.co.uk

Following further investigation, and tests on our own granite, we found that moisture was penetrating the grout joint from above, collecting under the slab and then rising back up through the granite. On warm days, the damp patches dried out, as the sealer applied was breathable, but in wet or humid conditions the staining returned, as more moisture was drawn up through the stone. Armed with this knowledge, we were able to recommend a solution.

We lifted the slabs and used our own new Cement, Grout & Salt Residue Remover to remove the stains from the surface of the granite. Granite is acid-sensitive, so it’s really important to use an acid replacement solution to avoid potential erosion of the surface. This particular treatment can be safely used on all types of natural stone, except for those with a polished finish. It works by dispersing the salt residue caused by rising damp (and also by spot fixing).

To prevent further moisture from rising through the granite, the stone manufacturer recommended applying a coat of PVA to the back of the slab. This ‘back-buttering’ technique protected the underside of the stone from moisture and the damp that was absorbed through the grout travelled back to the surface without entering the stone’s porosity. A simple solution to (it would seem) a very common problem.

For more advice and information, please visit http://www.ltp-online.co.uk, tel. 01823 666213 or email info@ltp-online.co.uk

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Resulting in sealed in boot prints, milling dust from cutting and grinding, and general dirt and grime.

Initial conditioning and cleaning before sealing is an important part of the protection process and ensures that the open pores of the stone are free from contaminants before filling with sealer.

The simple first step is quite commonly missed out and the consequences of this can lead to inadequate sealing resulting in staining and aftercare issues quite soon after installation.

To avoid these issues use LTP Grimex intensive cleaner.

Dilute 1:10 with water.  Wash down surfaces, rinse with water and then leave overnight to dry before sealing.

The result of this simple first step is deeper penetration of sealer, which will provide longer lasting protection………and of course…….no boot prints!

For more information about LTP visit our website.

Please note that this information is offered as general guidance only and without guarantee.  Your specific circumstances may need an alternative approach.  In case of doubt, any process should be tried out in an inconspicuous area before general application.

Surface of a Limestone magnified by 120 microns

Steam can penetrate the small cracks and fissures on the surface of the limestone.
This does clean the limestone, but will also embed water into the surface.
Repeated cleaning using a steam cleaner can activate salts and weaken the stone over time. This can also lead to spalling or fragmentation of the surface.

COMPROMISED SEALER?
Surfaces that have been treated with an impregnating sealers can also be compromised. Steam cleaning does not normally remove the impregnating sealer, however repeated use can expose new fissures and capillaries within the stone. The newly exposed and unsealed surface takes in more dirt and becomes harder to clean, which then requires more frequent cleaning. This increase in cleaning can exacerbate the problem.

SURFACE SEALER DAMAGE?

Sealers used to finish the surface of stone can also be damaged. Steam is often used to remove paints, wall papers and other
coatings from surfaces. If a film forming
sealer has been used then contact by a
steam cleaner can cause a partial separation of the seal from the surface of the stone causing it to turn white or opaque.

                                                                        RUST STAINS ON THE SURFACE?               Rust stains:  These stains are reddish-orange and are caused by the oxidation (rusting) of iron. The source of iron staining is normally from within the stone, as most of the iron on the surface is normally
removed or discarded at the point of fabrication by the quarry. Therefore most Iron remains hidden and within the stone rather than on it; however, water from steam cleaning penetrating through natural fissures in the  stone can activate or accelerate rusting.
CRUMBLING OF THE SURFACE?
Moisture from repeated steam cleaning can in somecases cause spalling or fragmentation of the surface.
The migration of salts from moisture in the limestone can promote crumbling of the surface causing larger fissures and craters to appear. This is more
common in Limestone’s and marbles that contain naturally occurring mud or calcite veins which are more vulnerable to this issue.

WHAT TO DO?

COMPROMISED SEALER: Intensively clean the surface of the stone with LTP Grimex.Leave overnight to dry. Re-apply impregnating sealer – LTP Mattstone or LTP Colour Intensifier. For routine aftercare use LTP Waxwash. This is a PH neutral cleaner that will not damage the stone or compromise the seal.

SURFACE SEALER DAMAGE: Remove the Film forming sealer using LTP Grimex orLTP Solvex. Leave overnight to dry. Re-apply the film forming sealer – LTP Ironwax Satinor LTP Ironwax Gloss. For routine aftercare use LTP Floorshine. This gentle cleaner will clean the surface and repair the seal where it has worn from abraision every time the floor is washed.

RUST STAINS ON THE SURFACE: Intensively clean the surface of the stone with LTP Power Stripper. Leave overnight to dry.Re-apply impregnating sealer – LTP Mattstone orLTP Colour Intensifier. For routine aftercare use LTP Waxwash. This is a PH neutral cleaner that will not damage the stone or compromise the seal.

CRUMBLING OF THE SURFACE: Intensively clean the surface of the stone with LTP Grimex. Leave overnight to dry. Use a suitable resin stone filler of the correct colour to fill in the voids. Re- hone the surface of the stone using a twister pad and sponge down with a little water to remove any dust or sediment. Leave to dry. Re-apply impregnating sealer – LTP Mattstone or LTP Colour Intensifier. For routine aftercare use LTP Waxwash. This is a PH neutral cleaner that will not damage the stone or compromise the seal.

Still unsure? Try our new product guide to help select the correct products.

This information is offered without guarantee.  The material should be used so as to take account of the local conditions and the surfaces to be treated.  In case of doubt, the product should be tried out in an inconspicuous area.

The best way to remove dirt and slippery residues is to use a specialist paving cleaner.  It’s generally best to avoid acid-based products, as these can etch stone and eat away at grout.   A viscose-type product, like LTP Mouldex Paving Cleaner, will cling to the surface (rather than running off into beds and borders) and will help remove mould stains caused by mould spores, black spot, lichen, fungus and algae.  It will also help restore the surface to its original colour.

Once clean, it’s worth protecting the slabs with a sealer – especially if you have a stone surface that continues indoors and you want to maintain a seamless aesthestic.  Look out for a modern, water-based treatment, like LTP External Stone Sealer, which can be applied in damp weather; it will protect against stains and the elements, and will provide a more convenient (and safer) alternative to a spirit-based product.

Two new products are joining our British-made LTP range this year, to help restore hard landscaped areas.  New ‘Cement, Grout & Salt Residue Remover’ removes grout and building residues, as well as salt marks caused by rising damp and an installation method called ‘spot fixing’.  This new Remover replaces conventional acid, which would normally be used for the job, so it can safely be used on all types of tile and stone – indoors and outside – except those with a polished finish.  Notably, it can be used on unpolished acid-sensitive surfaces, including limestone and travertine, without any risk of etching.

The second new treatment  – LTP Blackstone – is an outdoor impregnating sealer and restorer that restores the appearance of faded dark limestone, marble, slate, concrete and artificial stone surfaces.  Blackstone is water-based, so it’s safe and convenient to apply, and it provides further protection against the elements.  It’s applied in multiple coats until the desired colour effect is achieved – from dark grey to ebony – and it can also be used to restore stone fireplace hearths.

For samples of the new products and for more information and advice on landscaping maintenance, please visit http://www.ltp-online.co.uk, tel. 01823 666213 or email info@ltp-online.co.uk

Most of these residues can’t be removed with a standard cleaning product.  They need something tougher.  The problem is that acid-based solutions generally needed to remove minerals can’t be used on a lot of tile surfaces.  If you attempt to clean an acid-sensitive material with a traditional acid cleaner, like ‘brick acid’, it will corrode the surface and effectively eat it away.  Hydrochloric-based acids also emit harmful fumes and can damage certain metals, like aluminium trims around a shower enclosure.

A safe and effective solution comes in the form of LTP’s new Cement, Grout & Salt Remover.   This brand new product replaces conventional acid and, when used as instructed, is safe to use on all types of tiles – from porcelain to glazed ceramics – and all natural stone surfaces too, except for those with a polished finish.  A diluted application removes mild mineral residue within 30 minutes, whilst a stronger application and agitation gives instant results.  After treatment, just extract deposits with a sponge and rinse the surface with clean water. Wet vacs can also be used.

Efflorescent and spot fixing

As well as removing cement and grout, LTP’s new Cement, Grout & Salt Remover also disperses rising salt residues caused by efflorescence and spot fixing.

Efflorescence is very common on outdoor surfaces, like bricks and patio pavers.  It creates a powder-like dusting or ‘bloom’ on the surface.  Efflorescence is caused by soluble salts and moisture rising from the ground or subfloor, or migrating through a wall.  When they reach the surface they evaporate and leave a layer of salt deposits behind.

Spot fixing creates a similar issue.   Adhesive is often dabbed onto each corner and the centre of a tile to fix it onto a wall or floor.  This creates a void between the adhesive, the tile and wall/subfloor. Moisture from the adhesive then collects in this void; minerals from the adhesive or concrete sub floor are then activated and they travel through to the tile surface, leaving a tell-tale ring mark or staining effect above each dab of adhesive.

Usually, an acid-based treatment like LTP Grout Stain Remover would be used to remove these marks from acid-resistant stone – but, where the surface is acid-sensitive, LTP Cement, Grout & Salt Remover now offers a safe and very effective solution.

To find out more about the new Remover,please contact LTP on tel. 01823 666213 or email technical@ltp-online.co.uk

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For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01590) 622521 or email angie@afpr.co.uk

A few years ago, I received a call from the owner of a London-based cleaning business needing help.  One of its clients had invested thousands on a renovation which included new bathrooms; they had commissioned a fairly unique vein cut marble which had been mechanically polished to a high sheen. The cost of the marble and installation was around £10,000.   Starting at the top of the walls, one of the cleaners applied a spray detergent and left it to run down the face of the brown-toned marble. The detergent was a general-purpose kitchen and bathroom cleaner, designed to remove limescale and dirt.   On a marble-effect porcelain or ceramic surface, this probably wouldn’t have caused too much of an issue.   But because the product was highly acidic, contact with the delicate polished marble caused etching and irreversible damage to the whole of the wall surface. In some instances, an attempt could have been made to re-burnish the marble, to polish out the damage, but the amount of water needed and the size of the bathroom ruled this out.

The huge improvement in digital print technology has, in many ways, compounded this problem.  Tile manufacturers have become incredibly good at copying natural materials like marble.  As a result, some people might not recognise an authentic material or realise that it needs to be treated differently.   Multiple surface finishes may then be maintained with the same general purpose ‘tough on grime’ product, rather than a more gentle pH neutral detergent that would provide a safer – and just as effective - solution.

At the property in London, the insurers are still trying to decide who’s responsible and who should pay for the damage caused. It materialised that the marble suppliers didn’t offer any maintenance advice at the point of sale and the installers didn’t give any guidance on aftercare. The architects who commissioned the marble for the client didn’t specify a sealer or provide any care advice - and the cleaners couldn’t have been expected to know the difference between a glazed engineered tile and polished marble. If the correct advice had been given at anystage, the damage might not have happened.

Shockingly, the cleaner that caused the damage cost just 64p.  A concentrated, specialist neutral detergent probably wouldn’t have cost any more, per wash.   As awful as this sorry story is, it serves as a good example; it’s also worth offering that best practice advice, no matter how prickly the customer might be.

For information on caring for natural surfaces, visit www.ltp-online.co.uk, tel. 01823 666213 or email info@ltp-online.co.uk.  Or, for instant advice on-the go, visit www.ltp-productguide.co.uk

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For further media information and photography, please contact:

Angela Fitzhugh PR Ltd on email enquiries@afpr.co.uk or tel. +44 (0)1590 622521

LTP Mattstone has been part of the LTP range for over 25 years and has quietly established itself as a run-away best seller. This great British ‘stain and Brexit-proof’ product, which is manufactured in the West Country, is renowned for its quality, performance and ease of application, protecting natural and artificial stone and other surfaces at extremely competitive prices. The impregnating sealer protects surfaces from staining and strongly repels water, oil and grease. It’s available in a water-based and traditional solvent formulation and can be used inside and outdoors.

Mattstone has a natural finish and it allows surfaces to breath, so it can be used on floors with no damp proof course. Water-based Mattstone can also be applied over residual moisture and offers an eco-friendly, low-odour option.

To find out more, please visit https://www.ltp-online.co.uk/prod/ltp-mattstone. For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

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For media information and photography, please contact Angela Fitzhugh PR Ltd on tel. (01590) 622521 or email angie@afpr.co.uk

Ideal for paths, terraces and external cladding, LTP Blackstone is fast and safe to use and the permanent finish created provides protection against the elements.  It can be applied in multiple coats until the desired colour effect is achieved – from grey to ebony.  On honed surfaces, it is applied with a cloth or sealant applicator and, on rough cut/textured surfaces, with a foam roller or paintbrush.  Surfaces can be walked on four hours after the final application and can be returned to ‘heavy use’ after 24 hours.

New Blackstone is available in one litre and five litre units and is offered as part of LTP’s extensive range of surface maintenance products.  To find out more, please visit http://www.ltp-online.co.uk.  For further information, please contact LTP on tel. 01823 666213 or email info@ltp-online.co.uk

• Removes surface rust stains
• Non acidic formulation
• Removes stains in just 15 minutes

LTP Rust Stain remover ideal for all types of polished and unpolished natural and artificial stone including marble, split face stone cladding, granite, travertine, sandstone, concrete, terracotta and porcelain tiles.

In just 15 minutes.

With cleaning of rust as simple as apply on to surface, leave, then scrub and wash off.

Step 1:
First brush off any loose debris, dust and dirt from the surface of the stone, if necessary first wash with area with LTP Powerstripper leave to dry.

Step 2:
Shake well before use. Apply LTP Rust stain remover direct to the rust stain by paint brush or cloth.

Step 3:
Leave on the surface for 15 minutes to act on the rust.
LTP Rust stain remover will change to a purple colour as it reacts with the rust.

Step 4:
Once the indicated time has elapsed, agitate with a white emulsifying pad and rinse the surface with clean water. If necessary repeat the process.

For more information please visit our website here.

Please note that this information is offered as general guidance only and without guarantee.  Your specific circumstances may need an alternative approach.  In case of doubt, any process should be tried out in an inconspicuous area before general application.