How Do I Remove Rust Stains From Natural Stone?

LTP Rust Stain Remover.

  • 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.

From this

 

To this

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.

Advertisements

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 which will leave the stone looking as it does naturally. And LTP External Stone Sealer which will enhance any natural colour in the stone, both of these are water based breathable sealers and will require 24 hours to cure.

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.

Sealing Stone With LTP External Stone Sealer.

Shake bottle well before use. 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.

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)

2_73_e

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.

Common Problems when Fixing Stone Outside

Stone patios and white blooms- Efflorescence

File Name : DSCN0487.JPG File Size : 664.6KB (680515 Bytes) Date Taken : 2002/08/14 17:06:08 Image Size : 2048 x 1536 pixels Resolution : 300 x 300 dpi Bit Depth : 8 bits/channel Protection Attribute : Off Hide Attribute : Off Camera ID : N/A Camera : E885 Quality Mode : NORMAL Metering Mode : Matrix Exposure Mode : Programmed Auto Speed Light : No Focal Length : 8 mm Shutter Speed : 1/208.2 second Aperture : F7.6 Exposure Compensation : 0 EV White Balance : Auto Lens : Built-in Flash Sync Mode : Red Eye Reduction Exposure Difference : N/A Flexible Program : N/A Sensitivity : Auto Sharpening : Auto Image Type : Color Color Mode : N/A Hue Adjustment : N/A Saturation Control : Normal Tone Compensation : Auto Latitude(GPS) : N/A Longitude(GPS) : N/A Altitude(GPS) : N/A

olive-limestone You’ve seen the magazine pictures: Designer patio’s decked out with stylish garden furniture, blue skies and a perfect sandstone/limestone  floor tiles… Yes all this is perfectly feasible but for a flawless floor you rely on that blue sky..infact from our experience at least 3 days of blue sky.     The most important factor when deciding  to seal any stone outside is the British Weather.. unless 3 dry days and nights (no rain…no dew) can be guaranteed then there is a strong chance your floor will not look like the one in the picture.

104

Kotah Black Limestone

A much more common scenario is a phone call to the supplier of the stone asking why the tiles and or grouting  have gone white overnight. salts on patio2photo 1

This is not a insurmountable problem as the bloom can easily be removed and in all the cases we have seen the tiles settle down over a period of time.

However, to save unnecessary worry it might be useful to learn why this issue can arise and how to resolve it.

All stones located outdoors can be susceptible to a condition known as efflorescence. It is caused by water moving through the substrate of a material collecting and carrying minerals and salts found in the mortar bed, grout, soil or the stone itself.

When the impure water reaches the surface  and evaporates, the minerals and salts will be left behind., these form those white marks or efflorescence, seen on the surface. Whilst this phenonemom is more common on unsealed surfaces it can also occur on sealed surfaces especially if the stone becomes wet before the sealer has fully cured, which can take up to three dry days.

Ironically once the stone is sealed this efflorescence can seem enhanced as the sealed surface traps the rain water on the surface which also evaporates leaving a white residue especially in hard water areas..  However no pain no gain.

It is important to go through this scenario and run the risk of a white bloom on the surface as it is only by fully sealing stone that will prevent water percolating through the stone and triggering the efflorescence cycle once again.

How to remove efflorescence:

If the surface is not a Limestone or a Sandstone containing high iron content then wash the surface with an acid based cleaner such as LTP Grout Stain Remover On acid sensitive surfaces then simply use water or a very mild solution of Grout stain remover (trial in a small area first). The efflorescence will fade and can be removed over time and provided the surface is properly sealed it will cease over a period of a few months.

What is the best sealer to use:

It is vital to use a breathable sealer that allows the transition of moisture from underneath, examples include

LTP Stone Oil (offers colour enhancement for Dark Stones)

LTP Mattstone H20.

LTP External Stone Sealer

One final bit of advice:

Do not over apply the sealer as the second cause of efflorescence , after the British weather , is too much sealer on the surface. As a rule of thumb it is best to apply roughly half as much sealer as would be appropriate for interior use.

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.

LTP Mouldex External Paving Cleaner

How do I clean my external paving stones?

IMAG0654

Before patio

Before using LTP Mouldex Paving Cleaner

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

After using LTP Mouldex Patio Cleaner

After using LTP Mouldex Paving Cleaner

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.

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)

2_73_e

 

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.

Featured

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 H20

LTP EXTERNAL STONE SEALER

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

 

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

Why do I need to seal my Floor or Wall Tiles?

If your tiles are porous like Natural Stone, Terracotta, Slate, Polished Porcelain & Quarry Tiles then we would always recommend sealing them.

There are essentially three aims when sealing a tile.

  • Stain Prevention
  • Surface Protection
  • Surface Enhancement

It is not always possible or indeed necessary to achieve all the aims, however stain prevention tends to be the overriding aim.

To achieve these aims there is the choice of two types of sealers

These will either be spirit based or water based.

These two types of sealers can be used independently or together depending on the type of surface being sealed and depending on the type of finish required:

Essentially there are three types of finish:

The first two are achieved with impregnating sealers, and the third with Surface sealers

Impregnating Sealers:

Unsealed, most natural tiles are absorbent to some degree or other, just  pour a tea spoon

Natural stone protected with LTP Mattstone

Natural stone protected with LTP Mattstone

of water on to an unsealed tile and observe how quickly the water is absorbed. English Limestone, Sandstone, Marble  and Terracotta tend to be the most absorbent and denser surfaces such as Granite and basalt? Much less absorbent, Travertine and Slate sit somewhere in the middle.

Full bodied Porcelain and Quarry Tiles may seem highly vitrified, but they can still be absorbent. On the whole the cheaper the tile here, the more absorbent it is likely to be..

Tiles have small pin-holes and open fissures as part of its natural texture. This texture will tend to accumulate grit and stains as part of the natural wearing process and unless they are impregnated will cause the floor to stain.

An impregnating sealer will have a carrier, often white spirit and a sealer within it. Once absorbed the carrier evaporates leaving the sealer in situ protecting the tile just below the surface

Depending on the porosity of the tile, a second or third coat of sealer may be needed.

In some cases a secondary seal is required to protect the surface of the tile, or to give the surface a gloss or satin finish.

Impregnating sealers are absorbed into the tile sealing it just below the surface, they tend not to alter the characteristic of the tile and whilst they offer mechanical strength to a tile and in some cases ..colour enhancement.., they will not offer surface protection.

Surface sealers

To achieve surface protection and a different finish to the tile , a surface sealer is used, these will provide the tile with a gloss or satin finish. In this case clearly the natural look of the tile is being altered.

Apply LTP Glaze Protector

Glazed Tile- Sealed with LTP Glaze Protector

As a general rule surface sealers tend to be water based, rather than spirit based and depending on the nature of the surface being sealed can be used on their own or in conjunction with an impregnating sealer.

Advantages and disadvantages of Spirit Based & Water Based Sealers

Spirit based and water based sealers now perform equally well provided you purchase a water based sealer rather than a water based water repellent.

In our experience whilst water based impregnating sealers are becoming more widely used for environmental reasons, spirit based sealers are still much more popular for the simple reason: they are easier to apply.  Spirit is a better carrier than water, so spirit based sealers transport the sealer deeper into a tile.

However, as with paints the trend is away from solvent/spirit based products to waterbased sealers.

Another reason for considering waterbased sealers is they have much less odour than spirit based sealers.

External Use:  Swimmimg Pool surrounds: Wet Rooms:

In most circumstances impregnating sealers will be breathable allowing use in wet area’s and outside.

This is not always the case with surface sealers:

Whether they are polyurethane varnishes or waterbased;  surface sealers are not breathable and should not be specified for wet area’s or externally.

And finally

Everything above applies to grout joints as well as tiles. So remember to seal the grouting as well to achieve a perfect durable finish for your tiled surface with LTP Grout & Tile ProtectorLTP 600ml Grout & Tile Protector Aerosol

Patio & Driveway Surfaces – Cleaning, Sealing & Maintenance

Natural Stone Surfaces – External Application

Cleaning, Sealing and Maintaining Natural Stone – Part Three

Natural stone has been used as an external surface covering for paths, driveways, patios, court yards, terraces, porch areas,verandas, loggia and sun decks for centuries. As with all natural materials, it does need a certain level of care.

This is the third in a 16 part series of posts that will offer a comprehensive guide to cleaning, sealing and maintaining all types of stone, porcelain, quarry, terracotta and glazed ceramic tiles and surfaces. This post explains the LTP three-step approach to cleaning, protecting and maintaining natural stone surfaces used in external applications such as paths, driveways, patios, court yards, terraces, porch areas,verandas, loggia and sun decks. Natural riven or rough cut stones are often used outside because they are naturally slip resistant. Normally thicker than internally fixed stone they are more robust and harder wearing. The following guide will explain the process and help keep your surfaces maintained and in good condition for many years.

Natural Stone Surfaces – External Application

The following instructions are for sawn and honed, riven or rough cut finish: sandstone, slate, granite, quartzite and rough cut and riven limestone.

Step one: Initial cleaning

Before sealing, clean natural stone thoroughly to make sure that the surface is sealed  effectively. This is true of newly installed surfaces, as well as existing, due to the contamination that can occur during fitting. On existing surfaces such as patios, driveways, paths and terraces remove old layers of sealer, dirt residues and light deposits of organic matter and algae  from the surface and pores of the stone. For newly installed surfaces cleaning should remove all grout and cement residue and any general dirt or grime that has built up while fitting. Bucket, mop, sponge, scrubbing-brush or scrubber dryer machine if available.

Newly installed surfaces

Before grouting and once surfaces are clean and dry: Apply one coat of LTP Colour Intensifier & Stainblock before grouting. This treatment will help with the removal of residual cement and grout from the surface of the stone paths, driveways, patios, court yards, terraces, porch areas, verandas, loggia and sun decksLTP recommends using LTP Grout Stain Remover to clean and remove residual grout and mortar from the textured riven surface of natural stone driveways, patios, court yards, paths, stone terraces,verandas, porch areas and sun decks once they have been laid.

Please note: Do not use LTP Grout Stain Remover on honed and smooth limestone. 
This product is only suitable for use on riven limestone.

Cleaning newly installed reclaimed flagstones, rough cut, honed and tumbled stone surfaces

  1. Dilute LTP Grout Stain Remover 1:2 with water. On rough cut limestone dilute 1:6
  2. Apply solution to the surface with a stiff brush and agitate immediately.
  3. Leave for 5 minutes and agitate again. Rinse well with water.
  4. Rinse well with plenty of clean water.
  5. Allow the surface to dry.

Step One Cleaning External Stone Surfaces

Refurbishing used and heavily soiled stone surfaces

  1. Before sealing the clean stone thoroughly. 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.
  2. Dilute LTP Grimex 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.
  3. Agitate the surface with a stiff deck brush every 5-10 minutes (scrubber machines can be used).
  4. Continue to scrub while adding clean water. Remove residues from the surface with water or scrubber machine.
  5. Rinse thoroughly with clean fresh water to remove all remaining residues. Use a power washer if necessary.
  6. Allow the surface a minimum of 3 dry and damp free days before applying the protective seal.
  7. For the removal of other types of dirt refer to the table below.
  8. Do not allow the sealer to dry on the surface. Carefully buff with a soft cloth or machine to remove any excess. Complete this within 1 hour of application.

For the removal of other types of dirt refer to the list below. If you are unsure please call our helpline for advice.

Step two: Protect your natural stone surface from stains

To protects sawn and honed, riven or rough cut finish: sandstone, slate, granite, quartzite and rough cut and riven limestone surfaces and help prevent staining LTP recommends the application of LTP Colour Intensifier & Stainblock.

The equipment you will need for this task: bucket, applicator, brush, cloth.

Application of LTP Colour Intensifier Stainblock: Enhanced natural finish protects against water, oil, grease, dirt, grime, organic matter and aids maintenance

  1. Clean surfaces and ensure they are dry.
  2. Apply the product to the surface evenly using 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 3 hours.
  5. Protect from damp and wet conditions for at least 3 days.

Step 2: Sealing external stone surfaces

Step three: Maintaining your reclaimed flagstones, rough cut, honed and tumbled stone surfaces

Using the correct maintenance product will increase the life of your stone seal, provide more protection against staining and make sure your path, driveway, patio, court-yard, terrace, porch area, veranda, loggia or sun deck 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 Grimex on external surfaces sealed with LTP Colour Intensifier & Stainblock. LTP Grimex will remove surface dirt when required (normally every 3-6 months).

Regular maintenance on sawn and honed, riven or rough cut finish: sandstone, slate, granite, quartzite and rough cut and riven limestone

  1. Dilute LTP Grimex 1:3 with water.
  2. Apply the solution to the surface and agitate.
  3. Leave for 10 minutes before agitating again and then rinse with water.
  4. Leave to dry for 24 hours and then if necessary re-apply a light coat of sealer.
  5. Protect from damp and wet conditions for a minimum of 3 days.

Step 3: Maintaining External Stone Surface.

Should you use a professional floor restoration company?

The application techniques described above are achievable by a competent DIY enthusiast using the products as described. However, natural stone products are often expensive and by nature each stone has its own characteristics. We often find that many of our customers prefer to use the experience and skills of a professional stone restoration and cleaning company to make sure that their project is completed to the highest standard. LTP is pleased to associate with the following companies that specialise in natural stone restoration and cleaning:

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 and we will be happy to help you.

Visit www.ltp-online.co.uk to buy from the LTP Range of products or find out more about us.