Preparing Surfaces Before Sealing

All to often we see stone surfaces on busy sites that have been sealed, but not properly prepared before the sealing.

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.

LTP Grimex

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.

Problem Solving Black Limestone

We are often contacted in particular about black limestone, the appearance of stains and mineral deposits is not uncommon and occurs with most types of limestone, however the appearance on black limestone or darker stone is more prevalent. This is why it is possible to notice some marks appearing even before sealing. As a naturally occurring chemical reaction it is often difficult to avoid. So this blog is all about some of the different things that can happen, what you can do to prevent it or what you can do to resolve the issues as best you can.

Mineral Stains

Mineral deposit stains on black limstone

Mineral stains are sometimes caused when rain water trickles through sand-cement mortar screeds, toppings and bedding under limestone paving can become moderately alkaline. As this rainwater evaporates, its alkalinity increases until the solution becomes saturated.
This solution then can travel to the surface within the limestone where it starts to deposit solids such as white and grey encrustations of calcium carbonate also known as lime plumes.
To remove the the mineral salts from the surface wash the surface with a mild solution of acid*. This will help disperse the mineral salt deposits from the surface.
LTP Grout Stain Remover is a product suitable for the task, dilute 1 part LTP Grout Stain remover in 4 parts warm water and apply to the surface of the stone. Agitate using an emulsifying pad or similar abrasive pad and then rinse thoroughly with plenty of clean water. Repeat process if necessary.
For more information about LTP Grout Stain Remover please see the Technical Data Sheet.

*N.B Grout stain remover may etch the surface and cause the stone to dry lighter.
If the Limestone is either Honed or Polished do not use LTP Grout Stain Remover and instead use LTP Powerstripper.

Mineral deposits causing a banding effect

Halo Stains & Bands Of Mineral Deposits.

This is caused by trace amounts of sodium and potassium oxides within the Limestone which can also be activated by rain water. Even where rain is slightly acidic, the solutions of these salts in rainwater will gradually become alkaline. Surface wetting and evaporation can produce recurrent patches and bands of dampness known as accumulation zones ( rainwater pooling on the surface where it cannot run off).

Evaporation concentrates the alkaline solutions until they become saturated at the  outer limits or edge of accumulation zones. Further evaporation then causes precipitation, crystallisation and immobilisation of the salt at the surface and in pores immediately below the surface. The resulting bands of distinct pigmentation are halo stains as seen in the image above of Limestone.

Grout & Adhesive Stains.

img_0122

Adhesive Stains On Limestone

Grout and adhesive stains like this appear often, if the stone has been sealed beforehand then the process of removing the residues is easier.
After grouting most of the residues should be taken off with water before it fully dries on the surface. For the removal of most grout residues on Limestone we would recommend using LTP Powerstripper. However on more severe cases as shown in the picture above, using a mild solution of LTP Grout Stain Remover may be more effective.
Grout Stain Remover is an acid based cleaner and will etch any acid sensitive surfaces (Limestone, marble, some sandstones, chrome etc).
We would always recommend to test on a small inconspicuous area first.
LTP Grout Stain Remover Tech Data Sheet.

General Dirt & Grime

If your limestone has been outside for a couple of years, it may have seen better days.
General dirt and grime can be easily removed with LTP Grimex.
Dilute in a bucket of water as per instructions on the back of the bottle, then apply and leave for 10 minutes. Give it a scrub with a deck brush or an emulsifying pad and then rinse with plenty of clean water.
After cleaning allow to dry for 24 hours and then the stone will be ready for resealing.

Protect your Limestone with the correct sealing product.

Sealers used to enhance the appearance and help prevent limestone pavers staining from organic matter outside need to be breathable. LTP Mattstone H20 & LTP Stone Oil are examples of breathable sealers suitable for external use. As well as protecting the stone from staining, breathable sealers will allow the microscopic transition of moisture assisting any trapped moisture to escape through the stone from the mortar and sub surfaces. However, moisture permeating through the stone and sealer to the surface can still dry to leave a calciferous deposit.

Once the stone is thoroughly dry and mineral salt deposits are greatly reduced, general dirt and grime has been cleaned off, reseal the stone with an appropriate limestone sealer. LTP Mattstone H20 is highly effective natural stone sealing solution and is suitable for exterior use. However many of our customers have used LTP Stone Oil after acid washing their stone as it helps to re-enhance and deepen the colour.

Apply LTP Stone Oil to the surface of the stone using a paint brush. Allow it to absorb into the stone and then remove any visible excess from the surface after 45 minutes using an absorbent dry towel. The aim is to completely saturate the stone with as many coats of the sealer as necessary, but do not allow the sealer to dry and leave a film on the surface. Do not apply in direct sunlight.
For more information on how to apply please see the Technical Data Sheet.

LTP Mattstone H20 is applied to the surface with a paint brush, allow to absorb for 15 minutes and then apply a second coat. Remove any visible excess on the surface after 45 minutes.
For more information on how to apply please see the Technical Data Sheet.

 

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 inconspicous area before general application. 

Sealing Stone Outside.

Limestone, Sandstone, Travertine, Marble, Slate, Granite, concrete:
Regardless of what type of flooring you choose, the likelihood is it will require some form of sealing.

This is because natural stone is porous, and therefore if left unsealed, any moisture will be soaked up by the stone making it very difficult to remove, and potentially leaving the surface permanently stained (sometimes even fallen leaves can cause stains).

The best way to prevent all this is to seal the stone.

When you seal a stone, you are essentially filling any voids or pores of the stone with the sealer. This prevents any further liquid to absorb in to the tile, as demonstrated here with this close up shot of a water droplet on a tile sealed with LTP Mattstone.

When sealing natural stone outside it is important to use a breathable impregnating sealer, this will allow the transition of moisture from underneath.
Examples include LTP Mattstone H20 & LTP External Stone Sealer both are water based breathable sealers and ideal for use outside.

It is important to note that all stones located outdoors are susceptible to a condition known as efflorescence.
This blooming is caused by water moving through the substrate of a material and carrying minerals and salts found in the mortar bed, grout, soil or the stone itself.
We have a blog here all about efflorescence.

Its also very important when laying Natural stone to make sure that its fixed on a full bed of adhesive and not spot fixed.
The end result could look like this if its spot fixed.
Spot fixing issue Sandstone

If this has already happened to your patio, we have a blog here.

When sealing different natural stones, what will vary the most will be how many coats the stone will need before it is fully sealed.
Each stone exhibits different levels of porosity. A tumbled Limestone may have a higher porosity level than a Honed and filled Limestone.

Sealing natural stone with Mattstone H20

Shake bottle before use.

Test the porosity of your stone with water and a teaspoon, using the LTP porosity test.

Once surfaces are clean and dry, apply the product to the surface evenly using a sealant applicator pad, brush or soft cloth.

When sealing its important not to over apply the sealer and redistribute excess, avoid letting the sealer pool on the surface, as this can cause white marks to appear on the stone when it dries.
On highly absorbent surfaces apply several coats wet-in-wet.
After 15 minutes, remove any excess sealer with an absorbent cloth. Do not allow residues to dry on the surface.
Do not walk on the surface for 3 hours.

Sealing natural stone with External stone sealer.
Apply evenly to the surface using a foam roller or paint brush. On more absorbent surfaces apply further coats at hourly intervals until the surface is completely saturated. Remove any residual sealer if still visible after one hour.

Cleaning Tiles Outside

Before you start sealing your stone it is important to make sure your stone is clean and dry, other wise you will just seal in dirt and grime.

Old layers of sealer, dirt residues and light deposits of organic matter and algae must be removed from the surface and pores of the stone.

This can be done by either using LTP Grimex which is a intensive cleaner or LTP Mouldex Paving Cleaner.

To Clean with LTP Grimex, dilute 1:3 with water, apply to the surface with a sponge or water brush and leave to sit on the surface of the tiles for as long as it takes for the dirt to release. (5-30 minutes depending upon the level of dirt). If areas look as if they are drying out just add a little more solution to keep the area wet.

Agitate the surface with a stiff deck brush after approx 10 minutes (scrubber machines can be used).

Continue to scrub while adding clean water. Remove residues from the surface with water or scrubber machine.

Rinse thoroughly with clean fresh water to remove all remaining residues. Use a power washer if necessary.

Allow the surface at least 24 hours to dry before sealing.

To clean with LTP Mouldex Paving Cleaner, Shake well before use.
Surfaces to be treated should be completely dry before application.
Pour solution undiluted directly onto the pavers and spread out evenly using a sponge or paint brush, Garden sprayers can also be used and leave for a minimum of 1 hour.

Apply a little water and agitate with a stiff Deck brush or emulsifying pad to release the dirt and grime, and then rinse thoroughly using a hose or jet wash.
Some stubborn stains and black spot may require a longer treatment, in which case apply and leave on surfaces overnight. If some black spot remains after treatment, It should fade and disappear after a few days following the treatment. If not: re-apply. Keep pets off at all times during treatment. In case of contact with metals, fabrics and painted surfaces rinse with water immediately. Do not use on warm surfaces. Do not apply if rain is imminent. Avoid contact with ponds & plant life: if contact is made rinse well with plenty of water.

General Maintenance.
Weekly or daily depending on conditions, use a hose and a brush to remove any debris that may be lying on the stone.
Then annually if required use LTP Grimex, this will remove surface dirt and grime, possibly every 6-12 months depending on condition.
Dilute Grimex 1:3 parts water and apply the solution on to the surface and agitate.
Leave for 10 minutes before agitating again and then rinse with water.
Allow 24 hours to dry and then if necessary re-apply a light coat of sealer.

PLEASE NOTE: Always follow the detailed instructions on the product labels. Protect stone surfaces from contact with acidic substances. Do not use abrasive materials on honed or polished stones. Avoid using normal detergents or strong bleach cleaners on sealed surfaces as they will gradually remove the protective seal.

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.

 

How do I clean my external paving?

Featured

Patio’s can give that refined and uniform look to a garden area, a clean cut from grass to stone, and when newly laid they look fantastic.

olive-limestone

If you had them laid before the winter months however they probably won’t look the same now as they once did. With the amount of rain that we have had over the last few months, the probability is that you will have some form of green growth on the tiles.

This green growth is a mix of Algae, moss and lichen which builds up on the tiles, normally more common in areas of higher rainfall, as this is the perfect place for algae to grow, high rainfall and with areas for the algae to cling to.

However this isn’t the end of your patio, as this can be easily fixed with the correct tools.

Cleaning Patios With LTP Mouldex

Firstly you will want to brush the stone with a stiff bristle deck brush to remove any leaves, dirt or debris from the surface of the stone.

Making sure the area is now free of loose debris, pour LTP Mouldex direct on to the stone and spread out over the area with a brush or sponge. (Garden sprayers can be used)

Black limestone with LTP mouldex applied on it with a sponge.

Leave for a minimum of one hour, then add a little water and agitate with a emulsifying pad or stiff deck brush to help loosen algae, dirt and grime.

After a minimum of 1 hour, agitate with emulsifying pad.

After a minimum of 1 hour, agitate with emulsifying pad.

Rinse thoroughly with water. Garden hoses and jet washes can be used. Be careful though as jet washes force water at the surface at high pressures and can cause damage to some stones.
Some stubborn stains and black spot will require longer treatment, in which case apply and leave overnight.

Rinse well with plenty of water

Rinse well with plenty of water

Once fully dry, (normally 24 hours) we recommend sealing with LTP Mattstone H20, this will prevent moisture and organic molecules from absorbing into the surface.

Black Limestone once cleaned and sealed

Black Limestone once cleaned and sealed

LTP Mouldex is a highly effective HSE registered product which has been developed to Help restore natural stone and paving to its original colour.

Grey Limestone with LTP moudlex.

Grey Limestone with LTP moudlex.

KILLS & REMOVES:

  • Algae
  • Black Spot
  • Mildew
  • Mould
  • Lichen
  • Fungus
  • Pollution
  • Pollen stains

Anti-bacterial action helps prevent re-growth.

Suitable for use on all external stones and concrete paving.

Simple to use….apply and leave….scrub and rinse.

The fast acting formula will restore external paving and help prevent re growth.

Protecting stone surfaces after treatment with LTP Mattstone H20 will further reduce the possibility of black spot and mould spores from returning. It will also help prevent deep staining from falling organic matter and make any future cleaning much easier.

Grey Limestone After cleaning and sealing.

Grey Limestone After cleaning and sealing.

One 5ltr can will treat up to 50 sq.m deepending upon the extent of soiling.

LTP Mouldex 5ltr only £39.54 Inc VAT.  (click here to buy or find your nearest stockist)

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For further information on the application of LTP Mouldex watch the video below.

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.

How to achieve different finishes on Natural Stone

Different finishes on natural stone

SEALING:                       LTP MATTSTONE                    500ml, 1 & 5ltr containers

LTP MATTSTONE (Natural Finish): Apply evenly to the surface using an applicator LTP-Mattstone5L,1L_500ml_Grp_Webpad or soft cloth.  Leave the sealer to absorb into the stone for 30 minutes.  Work into and then buff off any excess using a micro-fibre cloth. Apply further coats using the same method until the stone is fully saturated. Leave to cure overnight.  This should be done before grouting. Finish by applying a further coat of sealer making sure to cover the joints as well.

Buff off any excess sealer between coats…allow to dry for 24 hours before allowing heavy traffic.

SEALING:                       LTP STONEOIL                                    1 & 5ltr containers

LTP STONE OIL (Super Enhanced Finish) – Apply evenly to the surface using an applicator pad or soft cloth. Leave the sealer to absorb into the stone for 30 minutes. Work into and then buff off any excess using a micro-fibre cloth. Apply further coats LTP-StoneOil5LTin_1L_Grp_Webusing the same method until the stone is fully saturated. Leave to cure overnight. This should be done before grouting, followed by a second coat making sure to cover the joints as well. Blemishes and minor scratches when they occur can be treated with the application of a little more Stone Oil. For extra stain resistance in bathrooms and kitchens a thin layer of LTP Mattstone or Colour Intensifier can be applied over the Stone Oil.

SEALING:                    LTP COLOUR INTENSIFIER      500ml, 1 & 5ltr containers

LTP COLOUR INTENSIFIER & STAINBLOCK (Enhanced Finish) – Apply evenly to the surface using an applicator pad or soft cloth. Leave the sealer to absorb into the stone for 30 minutes. Work into and then buff off any excess using a micro-fibre cloth.LTP-ColourIntensifier5L_1L_500ml_Grp_Web Apply further coats using the same method until the stone is fully saturated. Leave to cure overnight. This should be done before grouting. Finish by applying a further coat of sealer making sure to cover the joints as well.

Buff off any excess sealer between coats…allow to dry for 24 hours before allowing heavy traffic.

IMPORTANT NOTES:
Over applied sealer left to dry on the surface can be removed with the application of a little more sealer, which should then be buffed immediately to remove the excess. If left for too long then removal can be achieved using LTP Power Stripper in which case surfaces will need to be re-treated.
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 products should be tried out in an inconspicuous area before general application.

Natural Stone and Tiles – Common Stains: Water

How to remove Water Stains ­from Natural Stone and Tiles

A water stain mark on natural stone

Natural stone and tiles are an investment that can add real quality to your home or office environment. When staining or marking of a stone surface on a kitchen, bathroom or office floor or work surface occurs, such as water stains; this can create a potentially difficult situation to resolve.

Understand your surface

Ensuring that you know what has caused stains on stone, the material stained and whether the surface is protected can all have a bearing on how you should address the issue. If you are in any doubt it is often more straightforward to seek expert assistance. At LTP we offer FREE technical assistance via our Helpline +44 ( 0) 1823 666213. In most cases, it will be easier to assist you if you are able to supply photographs of the issue and surface. Please send images to info@ltp-online.co.uk with as much information as possible.

Is your stone surface protected?

Natural stone protected with LTP Mattstone

Knowing if your stone surface or tiles has a protective seal applied is important in understanding the best solution to address the issue. Often when a protective seal is in place the method for tackling the problem is much less aggressive and simpler. Essentially this is because the stain is most often only affecting the protective seal.

To protect natural stone and tile surfaces to help prevent staining LTP recommends for following sealing products.  LTP Mattstone or LTP Mattstone H20 for a natural (invisible finish) or LTP Colour Intensifier & Stainblock for an enhanced appearance. LTP Colour Intensifier & Stainblock deepens the colour and enhances the appearance of the stone surface.

Common stains on natural stone and tiles – Water Stains

Water stains can appear on natural stone and tile surfaces such as floors and worktops when water is left to stand, as it dries into the surface it can cause a stain. This is most common with porous stone surfaces such as limestone, flagstones, sandstone and terracotta, but water stains can also affect glazed ceramics, porcelain and polished surfaces such as porcelain, granite and marble.

THE MOST COMMON CAUSES OF WATER STAINS ARE OUTLINED BELOW…

Using the wrong maintenance cleaner can gradually affect the performance of the seal. This after a while allows water to penetrate beyond the seal. In areas of hard water, these water droplets can dry out to leave a lime deposit on the surface. Hard water stains are difficult to remove using normal detergents.

Repeated cleaning of stone surfaces using water and a mild detergent can create a film on the surface.  When we mop and clean our surfaces the water dries off to leave a very slight film of residual detergent. In the months that follow this can create a micron thick film across the surface.  Water droplets can dilute the detergent in the area that they sit on leaving a spot mark.  This all happens on a fairly microscopic level, which is why staining of this nature is sometimes only visible when looking across a surface towards a light source.

The LTP approach to removing water stains

The method that LTP recommends for tackling water stains differs depending upon the surface type.

LIMESTONE, MARBLE, TRAVERTINE AND OTHER ACID SENSITIVE SURFACES

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

PORCELAIN, TERRACOTTA, SANDSTONE AND OTHER NON ACID SENSITIVE SURFACES

For surfaces that are not acid sensitive, we recommend using LTP Grout Stain Remover. Treat the affected area as directed by the product label, rinse and allow to dry. In some cases you can simply buff the surface to its original shine. Where this is not effective and to help maintenance you may consider applying LTP Glaze Protector.

If the stain persists repeat the treatment, if this is unsuccessful please contact our FREE helpline.

PLEASE NOTE: Always follow the detailed instructions on the product labels. Protect stone surfaces from contact with acidic substances. Do not use abrasive materials on honed or polished stones. Avoid using normal detergents or strong bleach cleaners on sealed surfaces as they will gradually remove the protective seal.

At LTP we believe in helping to offer solutions and this is why we offer a no obligation
LTP TECHNICAL HELPLINE, so please give us a call on +44 (0) 1823 666213 or email info@ltp-online.co.uk and we will be happy to help you.

Visit www.ltp-online.co.uk to buy or find out more about our range of products.

LTP cleaning of natural stone

Cleaning tips for natural stone wall and floor tiles

When is intensive stone or deep cleaning required?

  • As an important stage in the installation process of wall and floor tiles.
  • Where poorly maintained natural stone floor tiles need a top up seal.
  • When restoring natural stone wall or floor tiles.
  • For routine cleaning of unsealed external patios and paved areas.

Why would newly installed wall or floor tiles require intensive cleaning?

Keeping natural stone wall and floor tiles scrupulously clean before and during the fixing process, is vitally important. Intensive cleaning of stone floors and walls before application of the correct protective sealing product will make sure the result does not disappoint. Installing stone flooring and worktops by nature creates grit, dirt and adhesive residues. Ensuring that a vacuum is used (being careful not to scratch the surface) to remove loose dirt from your new stone floor or worktop will not address stains and residue marks. Simply washing stone flooring in water will not be effective in removing ingrained marks or adhesive. Using standard household cleaning products that often contain bleach is likely to damage the surface of your newly installed natural stone floor or wall. You should make sure that the correct cleaning product is used for the natural stone material being installed. Need more information about surfaces? Visit our identify your surface selector.

Selecting the correct intensive cleaning product for your natural stone flooring or wall tiles

LTP has developed a range of four intensive cleaning products that offer intensive cleaning solutions for most commercial and domestic applications. Each of our intensive cleaning products has been designed to address the needs of specific circumstances related to artificial and natural stone. We have solutions for all types of natural and artificial stone flooring, granite countertops and fireplace surrounds. Ensuring you have the correct product for the task by simply contacting our Technical Helpline on +44 (0) 1823 666213.

Removing grout stains1. LTP Grout Stain Remover (1&5 litre containers)

An intensive cleaning solution for removal of cement and grout residues from stone flooring and wall tiles. Extremely effective against mineral salt formations (efflorescence) and the removal of plaster and dust stains. Useful for routine cleaning of unsealed patios and other outside paved areas. LTP Grout Stain Remover may be used on glazed ceramics, quarry tiles, terracotta and some stone. (Do not use on limestone, marble or other acid sensitive surfaces.) Buy LTP Grout Stain Remover

 

 

Cleaning grime from natural stone2. LTP GRIMEX (1&5 litre containers)

The answer to stubborn grime, oil, old layers of wax or acrylic and even rubber sole marks on terracotta and natural stone flooring. Ideal for removing ingrained dirt and grime, both internally and externally. Suitable for use on glazed and unglazed tiles this product is excellent for renovating old quarry tiles, terracotta, slate, stone, marble, stone fireplaces and can be used to clean brick and external paving.
Buy LTP Grimex >>

 

 

Removing oxidised linseed oil3. LTP POWER STRIPPER (1&5 litre containers)

For removing existing layers of sealer from tiles. One of the few intensive cleaning products on the market capable of breaking down oxidised boiled linseed oil and beeswax from the surface of terracotta. Powerful amines, ammonia and alkalinity penetrate and help lift the hardest, heaviest films. Ideal for intensive cleaning of heavily contaminated vitrified quarry tiles, limestone, travertine, sandstone, slate, glazed ceramics and porcelain. Strips most things first time thereby minimising labour costs. Buy LTP Power Stripper >>

Removing tick layers of sealant4. LTP SOLVEX (1&5 litre cans)

A powerful non-caustic stripper that softens most types of solvent based surface sealer, which can then be removed with ease. Suitable for removing most wax, oil, emulsion and polyurethane sealers. Will not discolour or damage natural stone, slate, terracotta or quarry tile surfaces. After washing and rinsing, surfaces are ideal for re-sealing. Buy LTP Solvex >>

Polished Marble Fixing and Sealing Guide

The following instructions are appropriate for Polished Marble.

STEP 1: FIXING THE STONE USING PROPRIETARY ADHESIVE.

Apply adhesive to primed concrete or timber surface.

Using a notched trowel spread out the adhesive evenly.

Butter the back of each piece of stone with adhesive.

Leave adhesive to dry naturally. DO NOT force dry.

DO NOT cover stone. Covering slows curing and prevents the stone breathing.

 

Useful tools: Notched trowel, mixing trowel,mixing drill, adhesive whisk, bucket, sponge, electric wet cutter with diamond disc, grout float, 2mm spacers.

Polished-Marble-Fixing-1STEP 2: INITIAL CLEAN USING LTP GRIMEX BEFORE SEALING.

Dilute LTP Grimex 1:10 with water.

Apply to the surface and gently agitate using a mildly abrasive pad.

Rinse well using a sponge and water.

Buff off any water marks that remain before they dry.

Leave the stone to dry.

Useful tools: LTP white emulsifying pad, LTP pad holder & 4 pc pole.

Polished-Marble-Fixing-2STEP 3: INTIAL SEAL USING LTP MPG SEALER BEFORE GROUTING.

Apply sealer evenly to the polished stone surface using sealant applicator or similar.

After 20 minutes buff visible sealer into the polished surface.

2 hours after the final coat of sealer grout the joints.

Rinse well with plenty of water.

Dust of remaining residues and leave to dry for a minimum of 24 hours.

Useful tools: LTP sealant applicator, 4 pcc pole & buffing cloth.
Polished-Marble-Fixing-3STEP 4: FINISH WITH A FINAL COAT OF LTP MPG SEALER COVERING THE JOINTS AS WELL

The surface should be clean and dry.

Apply sealer making sure to cover the joints as well.

Buff off excess within 20 minutes. DO NOT allow sealer to dry on surface.

Leave to dry. Light traffic only for first 24 hours.

DO NOT COVER. Covering slows curing and prevents the stone from breathing.

Useful tools: LTP sealant applicator, 4 pc pole & buffing cloth
Polished-Marble-Fixing-4STEP 5: Aftercare and Routine Cleaning

1 capful of LTP Waxwash per litre of water.

Mop surfaces with the solution.

Buff using microfibre cloth or similar to finish.

Leave to dry.

LTP WAXWASH DOES NOT DAMAGE THE STONE & HELPS MAINTAIN THE SEAL (40 washes per litre x 20sq m)

Useful tools: LTP 4 pc pole & pad holder,buffing cloth,bucket.

Polished-Marble-Fixing-5

 

At LTP we believe in helping to provide solutions and this is why we offer
a no obligation LTP TECHNICAL HELPLINE, so please give us a call on
+44 (0) 1823 666213 and we will be happy to help you. 
Visit www.ltp-online.co.uk to purchase from the LTP Range of products or find out more about us.

Cleaning, Sealing and Maintaining Stone Surfaces

Cleaning, Sealing and Maintaining Stone Surfaces 

Natural stone has been used on floors and walls for centuries. As with all natural materials, it does need a certain level of care.

 

Natural Stone Surfaces – Internal Application

The following instructions are appropriate for Travertine, Limestone, Marble, Sandstone, Terrazzo and some Granite.

Step one: Initial cleaning 

Before sealing natural stone must be thoroughly cleaned to make sure that sealing of the surface can be achieved effectively. This is true of newly installed surfaces, as well as existing, due to the contamination that can occur during fitting. Equipment recommended for this step is a bucket, mop, white emulsifying pad, 4pcs pole, sealant applicator & pad holder, microfibre cloth, scrubber or scrubber dryer machine.Stone_cleaning_and_seal_Pack1

Newly installed surfaces

LTP recommends LTP Grimex as the solution for cleaning newly installed natural stone surfaces before sealing. LTP Grimex removes grease, dirt and grime from the surface ensuring the natural stone surface is best prepared for application of a sealing product.

Cleaning newly installed stone surfaces

  1. Dilute LTP Grimex 1:10 with water.
  2. Apply solution to the surface with a mop or sponge. Under floor heating must be off.
  3. Agitate to release the residual dirt and grime from the surface with a mildly abrasive pad (LTP White emulsifying pad).  Rinse well using a sponge & water.
  4. Do not use acidic cleaners, such as LTP Grout Stain Remover.
  5. Allow the surface to dry (preferably for 24 hours).

Cleaning natural stone with LTP Grimex

Refurbishing used and heavily soiled stone surfaces

  • Before sealing the stone must be thoroughly cleaned. Old layers of sealer, residues from aftercare products and deposits must be removed from the surface and pores of the stone. Film forming layers of sealer should be removed with LTP Solvex before washing with LTP Grimex.
  • Depending upon the levels of dirt, dilute LTP Grimex 1:3 with water. Apply with a sponge or cloth and leave to sit on the surface of the tiles for 5-10 minutes.
  • Agitate the surface with a white emulsifying pad (for polished, smooth or honed surfaces) or scrubbing-brush ( LTP Deck brush) for Rough Cut surfaces and leave for a further 5 minutes (scrubber machines can be used).
  • Continue to scrub while adding clean water. Remove residues from the surface using a cloth or scrubber dryer machine.
  • Rinse thoroughly with clean fresh water to remove all remaining residues.
  • Allow the surface to dry for a minimum of 24 hours before applying the protective seal.
  • For the removal of other types of dirt: Do not use acid based cleaners on limestone or marble. If you are unsure please call our helpline on +44 (0) 01823 666213 for advice.

Step two: Protect your natural stone surface from stains

To protect stone surfaces and help prevent staining natural stone should be sealed. LTP recommends applying LTP Mattstone for a natural (invisible finish) or LTP Colour Intensifier & Stainblock for an enhanced appearance. LTP Colour Intensifier & Stainblock deepens the colour and enhances the appearance of the stone surface.

Sealing prepared natural stone surfaces

  1. Surfaces must be clean and dry. Ensure under floor heating is off.
  2. Apply the product to the surface evenly using either LTP sealant applicator,a sponge, brush or soft cloth.
  3. Redistribute to remove excess product and avoid pooling on the surface.
  4. Allow to dry. Do not walk on the surface for at least one hour.
  5. Protect from water for 24 hours and do not wash surfaces for at least 3 days.

Sealing natural stone with LTP Mattstone, LTP Mattstone H20 or LTP Colour Intensifier.

  • LTP Mattstone H20, LTP Mattstone and LTP Colour Intensifier will make the surface water and oil repellent.
  • Prevents stains, aids cleaning and simplifies the removal of surface stains.
  • Provides an invisible barrier of protection that will not greatly alter the surface character.
  • There are no health concerns once the product has properly cured.
  • LTP Mattstone H20, LTP Mattstone and LTP Colour Intensifier are micro porous and so can be used on surfaces that have no damp proof course.
  • Suitable for internal and external use.
  • If surfaces are properly maintained we recommend touching up the protective treatment every 3-4 years.

NB. Always test the product on an inconspicuous area. Wet or non absorbent surfaces cannot be treated. LTP Mattstone H20, LTP Mattstone and Colour Intensifier are impregnating sealers which need to fully absorb. Do not allow the product to dry on the surface. Carefully buff with a soft cloth or machine to remove any excess. Remove unabsorbed impregnating sealer, if left to dry on the surface, by rubbing over with a little more sealer. Some stones may be darker after application. Acidic substances, if left on the surface, may damage stone.

Step three: Maintaining your natural stone wall or floor

Using the correct maintenance product will increase the life of your floor seal, provide additional protection against staining and make sure your floor looks great. Common household cleaning products often contain harsh substances that can breakdown sealing products applied to stone. For this reason LTP recommends using LTP Waxwash on floors and LTP Stonewash for surfaces.

LTP Waxwash (for floors): Formulated for use on unglazed tiles such as travertine, stone, limestone, slate, terracotta and quarry. Ideal for washing floors sealed with LTP Mattstone H20, LTP Mattstone or LTP Colour Intensifier. Use routinely in place of normal detergent.

LTP Stonewash (for walls): This gentle surface cleaner is formulated for use on limestone, marble, granite, slate and polished porcelain. Will clean without breaking down and removing protective seals.

Regular maintenance on stone floors

  1. Add one cap full of product per litre of water in a bucket.
  2. Wipe surface with the solution. Do not rinse.
  3. Allow to dry. Do not walk on the surface during drying time – 20 minutes.

Maintaining natural stone with LTP Waxwash

A one litre LTP Waxwash will wash a 20 sq.m floor 40 times.

PLEASE NOTE: Always follow the detailed instructions on the product labels. Protect stone surfaces from contact with acidic substances. Do not use abrasive materials on honed or polished stones. Avoid using normal detergents or strong bleach cleaners on sealed surfaces as they will gradually remove the protective seal.
At LTP we believe in helping to provide solutions and this is why we offer
a no obligation LTP TECHNICAL HELPLINE, so please give us a call on
+44 (0) 1823 666213 and we will be happy to help you. 
Visit www.ltp-online.co.uk to purchase from the LTP Range of products or find out more about us.

How to remove staining from Black Limestone before sealing.

Visible stains on Black Limetone

Visible stains on Black Limetone

After quarrying, milling and then packing a black limestone it is possible for residues of moisture and sediment to remain on the surface. If left over a period of months these deposits of mineral and sediment absorb into the pores of the stone. This type of staining can be very difficult to remove using conventional cleaning materials. The following is a guide to help restore the                                                                                     appearance of the stone using a strong                                                                                   cleaner and then sealing to restore and                                                                                   enhance the colour.

DIRECTIONS FOR CLEANING AND SEALING

1. LTP Grout Stain Remover is applied and 2. GSR scrub immediatelythen immediately scrubbed into the surface using a black emulsifying pad. This should be done for 1 – 2 minutes making sure to cover the whole surface of the stone. This cleaner will slightly etch the surface of the stone to release the stains from within.

 

3. Rinse well with plenty of water2. Do not leave the cleaner to dwell on the surface. Rinse with water immediately after scrubbing. Change the rinsing water every 5 M².
After cleaning leave surfaces to dry for 24 hours.

 

4. Leave to dry
3. Once dry, surfaces will appear grey rather than black. The stains should no longer be visible. The surface of the stone has been conditioned ready for sealing.

 

5. Apply Stoneoil4. Apply a small amount of LTP Stone Oil to the surface of the Limestone and spread out evenly. Leave to absorb into the surface of the stone for 1 hour. Any visible excess after this time work should be worked off using a soft absorbent towel.

6. Spread out evenly

5. The sealer should be left to dry for a minimum of 24 hours with light traffic only.
It will take a further 3 days to reach full hardness, so surfaces should be kept as dry as possible during this time.

INTERIORS
Finishing the stone with a light coat of LTP Mattstone should be considered if the stone is to be used in kitchen areas.

INITIAL CLEANING:                LTP GROUT STAIN REMOVER                   1ltr & 5ltr

This should be done after fixing and before sealing LTP-GroutStainRemover5L&1L_2011_Weband grouting to remove calcium carbonate and mineral deposits including dust and dirt that has accumulated during the production and fixing process. Apply undiluted solution to the surface of the stone and agitate immediately with an emulsifying pad. Rinse thoroughly with a separate pot of clean fresh water. Wipe away the released calcium dirt and grime with a mop or sponge and water and leave to dry for 24 hrs.

TDS – http://www.ltp-online.co.uk/images/tds-Grout_Stain_Remover.pdf

MSDS – http://www.ltp-online.co.uk/images/msds-Grout_stain_remover_clp_GHS.pdf

SEALING:                                      LTP STONEOIL                                        1ltr & 5ltr

Before grouting apply a light coat of LTP Stone Oil, LTP-StoneOil5LTin_1L_Grp_Webcheck that all of the sealer has been
fully absorbed within 1 hour, any excess that remains on the surface after 1 hour should be worked in with a soft cloth or buffing machine. Leave for a further 4 hours or overnight before grouting the joints. Once all residual grout has been removed and the surface and joints are thoroughly dry; apply a final light coat of StoneOil covering the joints as well. Buff to remove any excess within 1 hour and then leave for a minimum of 3 days to fully harden before making excessively wet.

TDS – http://www.ltp-online.co.uk/images/tds-Stone_Oil.pdf
MSDS – http://www.ltp-online.co.uk/images/msds-Stone_oil_clp_GHS.pdf

IMPORTANT NOTES:
When cleaning or sealing vertical surfaces always start at the top and work down.
Provided that the surfaces are correctly sealed and maintained protection should last 3 – 4 years before considering applying a top up coat. Sealing will not prevent wear from abrasion.Used externally sealers will last between 1 & 2 Years before light cleaning and topping up.
After Intensive cleaning to remove any ingrained dirt or other staining and once dry, always test for moisture ingress. If evident cleaned areas should be re-sealed.
When using LTP Grout Stain Remover, gloves should be worn.
For detailed application instructions please see Technical Data Sheets.
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