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FAQ's

Q. How do I know the difference between a porous tile and a non-porous tile?
A. The water droplet test is a user-friendly way to determine whether your tile is porous or non-porous. To perform the test, wet your hands with water and then shake your hands over the tile; letting the water droplets fall onto the floor. If the water droplets penetrate within 3 minutes or less, the tile is porous. If the water stays on the surface, it is non-porous.

Q. I have polished floors, what can I use to strip off the wax coating?
A. Tile Doctor Eezi Strip is formulated to remove waxes and polishes from various floor types without damaging underlying sealers. Eezi Strip contains no ammonia, is environmentally safe and pleasant to use with no fumes. The product has excellent emulsifying properties, which means that once it has broken down the polish or wax, the residues are easily washed away with clean water.

Q. My floors have white blemishes in various places – how do I remedy this?
A. The white blemishes are as a direct result of moisture being present prior to coating the sealer. It is of the utmost importance to test moisture before any sealing of any kind can be done – be it a vertical or horizontal surface. Before starting your sealing project, it is essential to test if moisture is present.

On a vertical surface, a moisture meter will be required to test whether moisture is present; where the moisture must not exceed 4%.

The following moisture test can be performed on horizontal surfaces:

• To test whether your surface is dry, place a clear piece of plastic on the floor in the centre of the tile and tape the edges of the plastic with masking tape.
• Leave overnight and remove the next morning.
• The patch underneath should be the same colour as the rest of the surface. If the patch is darker this shows evidence of moisture, meaning the surface is still wet.
• The surface needs to be left to dry out completely before sealing.

Q. Uro Seal and Hydroseal are both sealers and appear to do the same job. Which one is preferable?
A. Tile Doctor Hydroseal is a superior quality sealer for protection against stains and every day wear and tear. Due to the fact that Hydroseal is non-yellowing, it may be applied in situations where it is important to retain the original colour of the surface. It has minimal darkening properties and brings out the natural colour and grain of the surface; whilst providing excellent resistance to water and stains.

FOR USE ON: limestone, terracotta, sandstone, cement, concrete tiles, vinyl and slate.

Tile Doctor Uro Seal is a deep penetrating UV stable sealer for low to medium porosity tiles; suitable for internal and external use. It is a two-part penetrating, abrasion-resistant sealer with low slip properties.

FOR USE ON: quarry tiles, terrazzo, stone, slate, cement floors and similar low to medium porosity flooring materials.

Tile Doctor Uro Seal will coat most surfaces but if tiles are too porous, like cement tiles, two coats of Hydroseal must first be applied; followed by two coats of Tile Doctor Uro Seal.

Q. Why is the sealer peeling off the tiles?
A. Sealers may peel off the tiles due to a number of reasons:
• The old sealer has not been removed properly before applying the new sealer.
• Polish is still present on the floor before sealing the tile.
• Dust and loose dirt was not removed before sealing; surfaces must be thoroughly clean and dry before applying a sealer.
• Efflorescence is present on the surface prior to sealing.
• When stripping off an old sealer using Tile Doctor Ultra Strip, the floor was not neutralized. It is essential that after stripping the surface with Tile Doctor Ultra Strip, that the floor is neutralized with Tile Doctor Super Power Clean. Thereafter, the surface must be thoroughly rinsed with water and left to dry out completely before sealing. Once the surface has dried, a Moisture Test must be performed (as described below) as is it is essential that no moisture is present when sealing surfaces.

Moisture Test before sealing a surface:

• To test whether your surface is dry, place a clear piece of plastic on the floor in the centre of the tile and tape the edges of the plastic with masking tape.
• Leave overnight and remove the next morning.
• The patch underneath should be the same colour as the rest of the surface.  If the patch is darker this shows evidence of moisture, meaning the surface is still wet.
• The surface needs to be left to dry out completely before sealing.

Q. How do I strip an old coating off the floor to prepare for a new coating to be applied?
A. When stripping off an old sealer Tile Doctor Ultra Strip should be used. Ultra Strip is a concentrated solvent based stripper which can be used to remove paint, varnish and very tough sealers, as well as linseed oil. Ultra Strip is of low viscosity allowing it to be spread across a larger area of the floor; as a result of rapid penetration into the surface. Ultra Strip can be used to: remove paint and bitumen, sealers, linseed oil products and epoxies from hard flooring materials. Ultra Strip is not suitable for use on wooden flooring, vinyl, marble and linoleum or other plastic flooring materials.

After the surface has been stripped with Tile Doctor Ultra Strip, the floor must be neutralized with Tile Doctor Super Power Clean. Thereafter, the surface must be thoroughly rinsed with water and left to dry completely before applying a new sealer.


Q. Which product is best to use for high traffic areas as well as surfaces around a Braai area? Could these products be used internally as well as externally?
A. Tile Doctor Uro Seal is recommended for high traffic area as well as around a Braai area, as it is a deep penetrating UV stable sealer for low to medium porosity tiles; suitable for internal and external use. Furthermore, it is suitable for high traffic areas due to the fact that it is an abrasion-resistant sealer with low slip properties.

FOR USE ON: quarry tiles, terrazzo, stone, slate, cement floors and similar low to medium porosity flooring materials

Before sealing the surface with Tile Doctor Uro Seal it is recommended to perform a porosity test for the surface to be coated.

The water droplet test is a user-friendly way to determine whether your tile is porous or non-porous. To perform the test, wet your hands with water and then shake your hands over the tile; letting the water droplets fall onto the floor. If the water droplets penetrate within 3 minutes or less, the tile is porous. If the water stays on the surface, it is non-porous.

Q. Is there a product that will give a matt finish internally or externally?
A. No, however, the closest product that will give a matt finish is Tile Doctor Uro Seal - which gives a Satin Sheen finish. If a glossier finish is desired, it is recommended to apply additional coats of Tile Doctor Uro Seal.

Q. If a mixture of mineral oil and turpentine/paraffin has been applied to my terracotta tiles, is there any product I can use over this?
A. You will not be able to coat any product successfully over this existing coating.

Q. How does one clean a spillage of acid or paint on a newly sealed surface?
A. Acid will scar the floor and in some cases etch the tile. In this case, the coating on the entire floor surface will need to be stripped and then resealed. For more information on which product to use consult the Selection Chart: Tile Doctor Strippers (we need a link here to this chart).

Paint can sometimes be removed with boiling water and rubbed off, but this could affect the sheen of the coating. It is recommended to test this approach first on an inconspicuous area, to determine whether it will be successful.  If this process is unsuccessful, the paint will have to be stripped from the surface. For more information on which product to use consult the Selection Chart: Tile Doctor Strippers. (We need a link here to this chart).

Q. The coating on the floor does not appear even?
A. This is evidence that insufficient coats have been done or the tiles are more porous than originally thought. In order to obtain an even coating, apply a further coat and recheck until a uniform sheen has been achieved.

Q. Is there a product I can use in my bathroom to seal slippery tiles to make them less slippery?
A. There are licensed Tile Doctor Applicators that specialize in a non-slip treatment which etches the surface of the tile.

Q. What sealer can be used to seal tiles around a pool when a salt chlorinator is used as a pool treatment?
A. It is not advisable to seal the tiles around a pool area, when a salt chlorinator is used as a pool water treatment. The salt chlorinator uses a electrolytic cell to convert sodium chloride to hypochlorous acid.  This then acts like a acid stripper which attacks sealers such as Tile Doctor Hydroseal or Tile Doctor Miracle Seal, and causes them to flake off.

If a sealer has already been used, it is recommended that all this be stripped off and the tiles left as is.  If a sealer is really required, we suggest a siloxane sealer such as Tile Doctor Marble & Stone Sealer or Tile Doctor Econoseal be used.

Q. What is the best product to seal porcelain tiles?
A. Tile Doctor Uro-Seal is the recommended product. Apply 3 coats of Tile Doctor Uro-Seal to a clean, dry surface.

Q. Can Tile Doctor Uro Seal be used to seal slate cladding?
A. Tile Doctor Uro-Seal is the correct product to seal slate cladding. Apply 3 coats of Tile Doctor Uro-Seal to a clean, dry surface.

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