Expert Answers in Stains

ANSWER - Porcelain tile is not known to fade.  It is not uncommon to find that the tile color under rugs that have been in place a long time are a different color or shade. …

Questions -  Most stones contain some ferrous oxide minerals that when subjected to excessive moisture can cause a rust-like stain.   For it to occur the stone has to be subjected to some level of moisture.…

ANSWER - I assume you must have an Ubatuba granite counter top. Many granite and other types of stone are treated at the processing plants with sealers or color enhancers or resins to stabilize or…

ANSWER - I have seen Carrara Marble installed in showers and steam shower successfully, but I have also seen where there were staining problems. Many marbles contain pyrite (iron sulfide) minerals which is a natural…

ANSWER -  Normally installing tile over damp mortar doesn't cause staining.  We call that a wet set method if the mortar is installed at the same time as the tile is installed.  A thin-set adhesive…

Answer - If you have subway tiles, I assume you are talking about tiles on the walls of the shower.  Although perhaps you did install the subway tiles on the shower floor. Most subway tiles…

ANSWER - If the dirty condition is actually a cementitious residue then a diluted phosphoric solution of acid should clean it.  If the residue is from a polymer modified adhesive, then you might need a…

ANSWER - If you have a number of wet/dark spots on your newly installed marble slabs, it may be that the marble slab was installed in a spot bonded method. If the marble slab was…

ANSWER -  The TEC 550 Power Grout says it is a unique cementitious formula, and that its unique formulation is stain proof* and provides strong, color consistent joints free of efflorescence that is resistant to…

ANSWER - If you have dark stains at the seams of the limestone fireplace, that suggests that the stone installer used a sealant or resin for those joints that bleed into the stone leaving a…