Expert Answers in Grout

ANSWER - Per the Natural Stone Institute Dimension Stone Design Manual the tolerance for the allowable lippage for a for a calibrated marble or any calibrated natural stone floor tile is 1/32".  This is based…

ANSWER - There are many reasons why a grout will crack and come loose.  Unsanded grout is recommended for grout joints 1/8" wide down to 1/16" wide.  Sanded grout is recommended for grout joints that…

ANSWER - You are asking a lot that can't be answered without performing a forensic inspection to determine what is causing the failures.  I can make some general statements that may or may not apply…

ANSWER - Tiles should lose their color from cleaning.  There are a lot of variables to consider.  First what kind of tile is it and how was it manufactured.  I will assume it is a…

ANSWER - If you are using a cementitious grout it should harden.  If you used too much water in mixing the grout and/or too much water in cleaning the grout during the installation of the…

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 - The unglazed porcelain tile should technically be impervious with an absorption of 0.5% or less.  That doesn't mean it can't stain, when it can if something is left on it long enough and…

ANSWER -  The transition joint between the top of the bathtub flange and the wall tile is not supposed to be filled with a cementitious grout.  It should be filled with a resilient ASTM C920…

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…