Expert Answers in Stains

ANSWER - Some glazed tiles have micro fracturing or even pin holes from off-gassing during the manufacturing process.   It is always recommended to use a grout release to protect the tile from staining before you…

Well… I assume when you say dolomite you are referring to a type of marble, that might in fact be a type of limestone that is commercially referred to as a marble.  I assume you…

ANSWER - The only glue they should be using on a marble countertop is the resin adhesive to bond the section together or to bond the apron to the slab.  Sometimes if they have joints…

ANSWER - Determining what is causing a stain or how to remove it, depends on whether this is a granite countertop or a granite floor tile or a granite wall tile in a shower or…

ANSWER - With your description it is hard to determine exactly what is the condition. It could be intend fractures.  That is when there is excessive shrinkage and it causes intents in the tile that…

ANSWER - The marble may in fact be retaining moisture and maybe it will go away after it dries out.  On the other hand natural stone has various minerals within it that can react with…

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…