How do I clean my external paving?

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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.

Sandstone-Fixing & Sealing Outside.

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We have recently been contacted by numerous customers who have been having problems with spot stains appearing on their sandstone patios.

Sandstone Flags with Spot Fixing Issues.

Sandstone Flags with Spot Fixing Issues.

This is a common problem, so we thought we should share why and how this issue sometimes occurs. The pictures in this post are supplied by customers showing the problems that are occurring.

 

Understanding Sandstone

Many of the imported sandstones, and some limestones and granites,are very porous. If fixing natural sandstone or limestone outside DO NOT SPOT FIX!!

They are not man made concrete pavers and should not be treated the same.

The sandstone should be fixed to an even mortar bed and then each piece of stone back buttered for a solid fix…

This will help illuminate possibilities of staining from moisture and mortar.

Natural stones like sandstone are not as dense as concrete pavers and are full of microscopic capillaries. These capillaries can draw up moisture from mortar through to the face of the stone. The moisture dries out to leave a deposit of mortar residue and minerals within the pores of the stone.Img3701 Sealing too soon after spot fixing can sometimes highlight these issues and also slow down the transition of moisture, suspending the cement residues within the stone.

The introduction of moisture from rain can also further highlight these issues. This is because the moisture collects and dwells within the voids between the mortar spots underneath the stone. As it dries out and the moisture rises carrying more minerals from the sand and cement to the surface of the stone.

Most sealers used for outside use are breathable and allow microscopic transition of moisture, so any trapped moisture is still able to dry out should it become trapped beneath the stone. Sealing does not cause the issues associated with spot fixing nor should it be considered a method for covering up the stains should they occur.

If your stone pavers have been spot fixed, then we would suggest not sealing them for at least 3 months after installation. This should allow for any mortars to full harden and any released minerals to completely dissipate. Clean surfaces well using LTP Power Stripper and leave to dry for 24 hrs. Test the sealer on a small area before general application to make sure that the mortar spots are not highlighted and after a few days make the test area wet and allow it to dry out. If staining does not occur the rest of the surface can be sealed.

If your stone has been fixed correctly into a solid bed then we would suggest a drying time of two weeks before sealing. This should allow enough time for all mortars to fully dry. Solid fixing will not allow any rain water to sit beneath the pavers and dwell. Clean surfaces well using LTP Power Stripper and leave to dry for 24 hrs. Seal using an impregnating sealer and apply as many coats as necessary to completely saturate the stone.

When sealing using an impregnating sealer it is important to remember that the solution needs to fully absorb into the stone without drying on the surface and do not apply in direct sunlight. If sealer is still visible on the surface after 45 minutes saturation has been achieved and any excess should be toweled off. For best results allow at least 3 full dry days after treatment.

 

LTP IMPREGNATING SEALERS SUITABLE FOR EXTERNAL USE

LTP MATTSTONE

LTP MATTSTONE H20

LTP COLOUR INTENSIFIER & STANBLOCK

LTP STONE OIL

 

CLEANING SANDSTONES & LIMESTONE  WITH SPOT FIXING ISSUES

Use: LTP Power Stripper

Apply undiluted to the surface of the stone and agitate using a black emulsifying pad. Add a little water and agitate again. Leave the solution on the surface of the stone for 15 minutes and agitate again. Rinse well with water. Repeat until the stains are no longer visible. Leave to dry for a minimum of 24 hours before sealing. Before re-sealing the whole area test the sealer on a small area before general application to make sure that the mortar spots are not highlighted. Leave to dry and after a few days make the test area wet and allow it to dry out. If staining does not occur then the rest of the surface can be sealed.

CLEANING MORTAR STAINS FROM SANDSTONES AFTER POINTING

Use: LTP Grout Stain RemoverGrout_Residue_Remover_Pack2

Apply un-diluted onto the surface of the stone and agitate immediately using a black emulsifying pad to release the mortar stains from the surface of the stone. Using a sponge and water rinse well immediately after use and change rinsing water after every 5 sq/m.

MOULD, MILDEW AND BLACK SPOT

Use: LTP Mouldex

Spray LTP  Mouldex onto the surface of the stone and leave for 1 hour. Using a black emulsifying pad agitate the surface and rinse well with plenty of water. Repeat until all organic matter has been removed. Re-seal surfaces once thoroughly dry.

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

 

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. 

Removing Stubborn Cement & Grout Residues From Porcelain & Ceramic Wall & Floor Tiles

The following is an intensive cleaning guide for removing cement and grout residues from the surface of porcelain and ceramic wall & floor tiles following installation.

Porcelain-Tile-Header-Image

 

FOR USE ON ALL TYPES OF PORCELAIN & CERAMIC WALL & FLOOR TILES

 

1ltr-+-5-Ltr-Grout-stain-reLTP GROUT STAIN REMOVER

A rapid action cleaning agent for removing cement residues, grout stain, efflorescence and other similar deposits.  This product can be used in diluted or concentrated form, to assist removal of stubborn residue.

TECHNICAL FEATURES

  • High performance  .
  • Targets heavy or light films.
  • Walls & floors.
  • Rapid action.
  • Easy to use.
  • Interior & Exterior.
  • Efflorescence remover
DIRECTIONS FOR USE: FLOORS- REMOVING CEMENT AND GROUT RESIDUES MANUAL APPLICATION

GSR-Directions-Manual-Application

Step 1.Dilute solution 1-1 with water.

Step 2. Apply to the surface and leave for 5 minutes.

Step 3. Scrub surfaces and grout joints to release the grout residue.

Step 4. Sponge up or extract released residues and rinse with water.

Step 5. Allow surfaces to dry before allowing traffic.

DIRECTIONS FOR USE:FLOORS-REMOVING CEMENT AND GROUT RESIDUES MACHINE APPLICATION

GSR-Directions-Machine-Application

Step 1.Dilute solution 1-1 with water.

Step 2. Apply to the surface and leave for 5 minutes.

Step 3. Scrub surfaces and grout joints to release the grout residue.

Step 4. Sponge up or extract released residues and rinse with water.

Step 5. Allow surfaces to dry before allowing traffic.

REMOVING EFFLORESCENCE,WATER AND RUST STAINS FROM THE SURFACE OF STEPS AND RISERS.

Removing efflorescence,water,rust from steps and risers

Step 1.Decant solution into spray bottle and label clearly. Surfaces should be as dry as possible before application.

Step 2. Spray the solution onto the surface making sure to work in manageable areas at a time.

Step 3. Agitate immediately using a short haired stiff bristled brush. Repeat application until residues are removed.

Step 4. Rinse well with plenty of cool water. This should be done at least twice.

Step 5. Allow surfaces to dry naturally.

DIRECTION FOR USE- REMOVING CEMENT RESIDUES FROM WALLS……

Removing cement residue from walls

Step 1. Dilute solution 1 :1 in water.

Step 2. Apply to the surface of the tiles using a microfibre cloth.

Step 3. Scrub immediately using a black emulsifying pad.

Step 4. Rinse with water several times.  Change rinsing water frequently.

Step 5. Allow surfaces to dry naturally.  On higher glazes buff with a dry cloth to finish.

 

FURTHER INFORMATION – CLEANING:
After applying the cleaning solution work in teams of two. One operator should agitate the surface using mildly abraisive pad or rotary machine.The other operator should use a sponge and water or wet vac for immediate rinsing & extraction. This will prevent released dirty residues reabsorbing into the surface and greatly reduce the drying time of surfaces. If a scrubbing machine is used, use cool water only within the tank on the machine. Do not put intensive cleaning solution through the machine as this will impair it’s effectiveness.
If applying to walls, steps or risers start on the top and work down. Try to work in manageable areas at a time and make sure to rinse well with plenty of water after each application. Rinsing should be repeated at least 2 times after cleaning. In areas where the staining is deep repeat the process until all of the stains have gone.

USEFUL EQUIPMENT: 4pc pole, pad holder, black emulsifying pad or rotary scrubbing machine with onboard water tank, stiff brush attachment for the machine, wet vac, buckets, sponges, absorbant towels (for spillage control), Plastic film and masking tape for covering and protecting any surfaces not to be cleaned. Avoid prolonged contact with metal surfaces. Rinse immediately. Ensure that any sensitive surfaces not to be cleaned are properly covered and protected before beginning. Ensure that gloves and eye protection and suitable clothing are worn at all times.

 

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

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 and LTP Colour Intensifier, however you will need 3 fully dry days after applying to allow the sealer to fully cure.
If dry weather is not guaranteed, you can use LTP Mattstone H20 which is a water based breathable sealer and ideal for use outside when 3 dry days may not be possible.

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 and protect from wet conditions for 3 days.

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.

 

Roaming in Romania

Sales Director Mark Atkins

Sales Director Mark Atkins

Last week the team from LTP flew to Bucharest for a one day workshop with power point presentations and practical demonstrations on cleaning sealing and aftercare for stone, travertine marble, slate and granite.gama_ltp-1024x729

The venue for the presentation was the stunning new showroom and offices of Piatra online who as well as being Romania’s highest profile stone merchant are also LTP’s distributor for the country .http://blog.piatraonline.ro/conferinta-piatraonline-ingrijirea-si-intretinerea-pietrei-naturale/

The demand for stone is growing steadily in Romania as more and more people are made aware of its natural qualities and beauty. This resulted in a high attendance for both presentations which were also filmed live for broadcast on Youtube.https://www.youtube.com/user/sergiudedu/videosRomania workshop on LTP products

ingrijirea-pietrei-naturale-piatraonline-730x300

Mark Atkins with LTP’s MD Richard Osborne

After the presentation the floor was opened for a question and answer session as well as providing opportunities for the delegates to try some of the practical demonstrations for themselves.

Sales Director, Mark Atkins, commented that whilst he has always been impressed by the dedication interest shown in the subject following many similar visits over the past 5 years, he felt that this was the best yet.   He also added that after 5 years he was becoming quite an expert on the restaurants in Bucharest which he felt rate amongst the finest in Europe

 

 

Encaustic Tiles

Encaustic tile

Encaustic tiles are made of two or more colours of clay that are then mixed or inlaid together to create a pattern, they are then fired.
Encaustic effect Cement tiles are created by pouring different colour mineral pigments into a mold, grey cement then fills the rest of the body of the tile, this gets hydraulically compressed and left to set or cure for 3 weeks.
Both tiles are unglazed and would require sealing.
For more information please follow this link.

Prior to sealing it is always advisable to clean the tiles thoroughly with a solution of LTP Grimex. This advice goes for both newly laid and renovation projects. Remember not to use acid based cleaner with encaustic tiles .

When it comes to sealing there are various options available depending on the desired look of the floor, however the most popular are the natural Matt finish using either LTP Mattstone or the water based equivalent LTP Mattstone H20. Depending on the type of encaustic tile being used, up to three or four light coats of sealer might be required. Always test on an inconspicuous area first and buff off any excess.

LTP Colour Intensifier is also popular as its use offers a delicate enhancement of the different coloured patterns within the encaustic tile.

Finally, as always, the use of a compatible aftercare product in this case LTP Waxwash, will ensure optimum longevity for the sealed surface as standard household Encaustic 2 pg guidescleaners may compromise the effectiveness of the seal over time.

Correctly sealed and maintained an encaustic floor should last three to four years before re sealing is required.

To download an information sheet, Please follow the link below.

Encaustic Tiles guide

 

This information is offered without guarantee . The material should be used so as to take into 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 – Pedestrian Walkways & Driveways

LTP_Sealing_Cobblestone_ Walkways_and_Driveways_18

OBJECTIVE: SEAL STONE SURFACES TO PROTECT FROM DIRT AND GRIME & MAKE STAIN REMOVAL EASIER.

LTP Mattstone H20 is both hydrophobic and oleophobic and offers excellent resistance to staining and moisture ingress. If sprayed onto the surface a single coat is normally sufficient, if brushed two coats. The low viscosity allows the active ingredients to absorb into the surface and dry, to provide an in depth mesh of protection within the pores of the stone without creating a film or altering the surface character. Despite being extremely repellent the treated surfaces remain breathable. Dirt and moisture are prevented from absorbing making removal much easier. Ensure that the natural stones are dry and free from as much dust and dirt as possible before treating.

SEALING:        LTP MATTSTONE H20 (environmentally friendly)       5ltr containers

Fill sprayer with 5 litres of LTP Mattstone H20, set pressure to 1 bar. Hold nozzle of the sprayer approximately 50cm from the surface to be treated and apply evenly using a LTP-MattstoneH20_5L_Websweeping motion.
SPRAYERThe sealer will take about 15-20 minutes to absorb into the stone. Gloves, eye protection and face mask should be worn. Two hours after application test a small area for resistance to moisture by flicking a little water onto the surface.
If water beads, enough sealer has been applied. If moisture absorbs, a second coat may be need to be applied. Treated surfaces will take about 3 days to become fully resistant. If Spraying equipment is not available apply using a roller or large paint brush, making sure to work the sealer into any uneven edges of the stone.
Approx coverage: 5ltrs = 50M2

TDS: http://upload2.evocdn.co.uk/ltp/uploads/download/2_31_tds-mattstone-h20.pdf
MSDS: http://upload2.evocdn.co.uk/ltp/uploads/download/2_0_msds-mattstone-h2o-clp-ghs.pdf

AFTERCARE:    LTP POWER STRIPPER (water based solvent free) 5ltr containersLTP-Powerstrip5L_2011_Web

PERIODICALLY/WHEN REQUIRED spray and scrub surfaces clean. Scrubber dryer

machines can be used in conjunction with LTP Power stripper. Dilution should be 1 part Power stripper with 20 Parts water. This cleaner will help assist removal of general dirt and grime, chewing gum and stains from pollution from the treated external stone surfaces. Approx coverage: 5 ltrs : 500M2

TDS: http://upload2.evocdn.co.uk/ltp/uploads/download/2_21_tds-powerstripper.pdf
MSDS: http://upload2.evocdn.co.uk/ltp/uploads/download/2_56_msds-power-stripper-clp-ghs.pdf

 

IMPORTANT NOTES: 
Provided the surfaces are correctly sealed, protection should last 3-4 years before considering applying a top up coat.
After intensive cleaning to remove graffiti or other staining, and once dry, always test for moisture ingress. If evident, cleaned areas should be re-sealed.
When using Mattstone H20, gloves, eye protection and if spraying a face mask with appropriate filter should be worn.
This information is offered without guarantee . The material should be used so as to take into 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. 

Crackle Glaze Tiles & water marks

We were recently contacted by a customer who had concerns about her crackle glaze tiles that were installed in a shower area & sealed with LTP Crackle Glaze Sealer.

After using the shower small dark spots appeared. See images below.

Crackle glaze blog photos (1) with arrows Crackle glaze blog photos (2) with arrows

 

 

 

 

 

 

 

 

When newly laid crackle glaze tiles are fitted they will expand and contract with the change in temperature, especially in a wet room. This causes new cracks to form in the glaze, this new crack will be slightly porous and this will continue probably for about 6 months until the tiles have fully settled.

The customers concerns are as follows our answers in blue.

Q. Can mould grow as water can penetrate the tiles?

A. As far as we can gather from the information provided the dark marks that appear are drying out between wetting so the retention of moisture is relatively low. If ventilation in the bathroom is adequate, then we would not expect mould growth to be an issue. Cleaning the tiles with LTP Stonewash on a regular basis will help keep the surface clean without compromising the protection.

Q.Is the Crackle Glaze Protector adequate on its own? Why do you recommend the use of LTP Tile & Grout Protector Aerosol?

A. Crackle Glaze Protector contains a nano polymer that helps bridge the gaps between the crackles in the glaze. Filling these micro voids helps to ensure that stains and residual grout do not fill the cracks in the glaze, potentially altering the original character of the tile. Despite being an effective stain blocker the sealer does also need to remain breathable. This ensures that microscopic transition of moisture can still take place, even after the sealer has fully cured.  If moisture gets behind the tile then it should till dry out.  If moisture passes through a newly exposed crackle in the glaze due to settling then it should also still dry out.

Some customers prefer the convenience of topping the protection using the grout & tile protector because it is quicker and easier.  The polymer used in the grout & tile protector is slightly larger, so we would not normally suggest it is used as a primary sealer in place of the Crackle Glaze Protector on crackle glazed tiles

Q. Are tiles that have a water absorption rate of greater than 10% considered suitable for bathrooms?

A. Provided that the crackle glazed tiles are set into a flat even bed of adhesive with full contact to the reverse side of the tile without any voids, followed by a sufficient seal, then there should not be any great issues with water absorbsion/retention. We have seen on a  number of occasions installations where tiles have not been set into sufficient bed of adhesive allowing for voids between the all and the reverse side of the tile.  In wet areas such as shower enclosures moisture and condensation can build up behind the tiles and dwell within the open voids.  If the tile used has a relatively absorbent biscuit, then this moisture can travel from the reverse side of tile through to the face leaving a water mark that can take a longer time to dry out.

Crackle-glaze-pic-4

Crackle glaze tiles that have been sealed.

 

It is also recommended to seal before grouting or cutting the tiles, as grout can also enter these small cracks and become almost impossible to remove. There are different methods for sealing dependent on what colour grout is being used.

Crackle glaze 2 copy

Crackle glaze 3 copy

 

For regular cleaning the of the tiles we recommend using LTP stonewash, this will help keep surfaces clean without compromising the protection.

 

 

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.

Has your Natural Stone been damaged by Household Cleaner?

We were contacted recently by a customer whose pet had a little accident on their Stoneworks Tumbled Pietra Limestone and tried to remedy it by spraying CIF Bathroom cleaner on it, the result is shown in the photo below!

Stone damaged by Cif Spray

Stone damaged by Cif Spray-Image supplied by Stone Works Ltd

Our response to help rectify was…………….

LTP Grimex should be used to clean the surface of the stones that have been damaged by the CIF spray. This will help to neutralise the reaction that has caused a change in the character of the stones surface. The Lighter marks will still remain following cleaning, but LTP Grimexshould appear a little darker.

Remember to work on the entire piece of stone and not just the areas that are affected. This should be done in a way that does not allow the cleaning solution to spread over onto neighboring tiles, so whole pieces of stone, but only up to the grout joints.

Apply LTP Grimex diluted 1 : 3 with water and agitate the surface….leave for 10 – 15 minutes….agitate again and then rinse well using a sponge and water.

Leave the stone to dry.

 

Apply LTP Stone Oil to the surface and allow to absorb. Check the surface after 45
LTP-StoneOil5LTin_1L_Grp_Webminutes and then wipe up any excess from the surface. ThisLTP-Mattstone5L,1L_500ml_Grp_Web should be repeated until the colour of the stone has been restored. For extra protection and after a 24 hour curing time for the Oil a coat of LTP Mattstone can be used over the top.

 

LTP-Master500mlSpray_2011_Web

For dealing with spillages quickly when they occur we would suggest LTP Stonewash Spray.
This is a spray and wipe cleaner which will remove spillages without compromising the seal or damaging the surface of the stone.

For daily/weekly mopping use LTP Waxwash. This cleaner is PH Neutral and contains a trace of linseed oil, which makes it ideal for cleaning and embellishing sensitive sealed surfaces. A 1 ltr bottle is enough solution to wash a 20 sq.m LTP-Waxwash1L_Webfloor 40 times.

Hope this helps…

Customers response “Hip hip hooray”

  • It’s worked hooray
    Thank you so much
  • Please thank your guy for his help
    I can’t believe it

Thanks very much again xx

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.

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.