Expert Answers in Stains

Xypex is suppose to waterproof the concrete.  So in theory it should prevent moisture migration in the concrete wall to help reduce the possibility of efflorescence.  You can still get efflorescence from the mortar or…

ANSWER - The best counter tops for laboratories that is known to be chemical resistant is soapstone.  It is a natural stone that has been used for many years in these types of applications.  It comes…

ANSWER - There is always a grout haze after grouting a tile.   For cementitious grouts, the haze should be polished off with dry clean cheese cloth soon after the tile surface dries leaving a…

ANSWER - If the tile floor was sealed when dirty then the only way to clean it is to remove the sealer. To determine which stripper to use to remove a sealer you need to…

ANSWER - To determine how to remove a stain, you first need to know and understand what type of tile you have.  Since it is in a commercial kitchen I will assume it is an…

ANSWER -  You say you have a glazed porcelain tile.  A glazed tile has a glass-like substance fired on the clay bond surface. You then say the tiles are lappato tiles.  Lappato normally means that…

ANSWER - Wow that looks pretty extreme. Considering you could clean it off suggests that the staining is originating on the surface versus within. Considering the covered based has not discolored further suggests that the staining…

ANSWER - Normally when your sealed Saltillo tiles have a whitish or cloudy appearance, it means that moisture is trapped under the sealer. Chances are you have a surface type sealer that does not allow…

ANSWER -  Marble is made of a calcium carbonate material which tends to be more susceptible to staining. It is possible that the smudges are etched spots meaning that they were subjected to some material…

ANSWER - Orange or rust like staining in stone can be caused by minerals within the stone or sometimes because the stone is in close proximity of metal.  The aforementioned conditions, plus the stone being subjected to…