Expert Answers in Stains

ANSWER - If you rub too hard you might damage the tile. The best approach is to contact the manufacturer of the urethane grout and ask them how best to remove the urethane grout haze. …

ANSWER - The grout that you used may be a polymer modified grout similar to a grout with a latex additive.   Acids won't attack the polymer, but there are products for removing latex haze.  Try…

ANSWER - Regarding whether sealing a cementitious grout makes it waterproof, it doesn't.  Using an appropriate penetrating sealer over grout will make it moisture resistant, it will make it stain resistant, and it normally will…

ANSWER - In spite of the name suggesting it is granite, Petit Granit is known as a Belgian Limestone.  Several sources on the internet state not to use it as a countertop and say it…

ANSWER - Since you have a glazed ceramic tile it should come clean unless it has worn from abrasion.  Glazed ceramic tiles don't normally fade, but some of the softer glazes might to some degree.…

ANSWER - I assume you are saying that you seal your tile with a sealer and that your dog's urine is causing the sealer to be removed. Sealers are meant to minimize the chances of…

ANSWER - From your photo the bottom edge of the wall tile where it is adjacent to the transition joint from the wall to the floor has efflorescence staining.  That suggests water is traveling from…

ANSWER - It is not common to stain natural stone. There are enhancer sealers that applied to enhance the natural color of the stone. Natural stone is just that.  Every piece of stone is somewhat…

ANSWER - Denatured alcohol is acidic and can act as a solvent to break down sealers or stains that could be on the stone.  They use oxalic acid in polishing stone because it breaks down…

ANSWER - Ludders Limestone is a Texas Limestone.  The absorption rate and propensity to stain does vary depending on the physical properties of the stone.  Per ASTM C568 limestone can be rated as a low…