Expert Answers in Grout

ANSWER - The general rule is to never use acid on a tile. Using sulfamic acid normally isn't a problem because it is so mild. If the porcelain tile was a polished porcelain tile, then…

ANSWER - Ceramic tile or stone over wood subfloors is a common installation for tile.  It is important that the tile is installed correctly per industry standards and installation product manufacturers.  If your floor joists are…

ANSWER - Normally stains in grout can be cleaned depending on what caused the stain. There are grout cleaners and there are poultices for removing deeper stains. If you can't remove the stain then there…

ANSWER - You are correct that there should be grout joints between the stones.  The purposes of grout joints are to allow for adjusting for irregularities in the sizing of the stone, to provide support and…

ANSWER - I understand that you have a townhome where you replaced your kitchen floor with ceramic tile in August 2010.  The tile was installed over hardibacker board that was applied over a wood subfloor over…

ANSWER - Your grout should not be coming loose and not hardening.  It sounds like your grout joints might be too narrow to easily allow the grout to fill it.  Depending on the type of tile…

ANSWER - To clean a cementitious grout off of a natural slate stone, you need to carefully chisel off any large chunks of grout.  To remove the grout haze you should use a diluted sulphamic or phosphoric…

ANSWER - If the ceramic tiles were installed correctly the grout should not be cracking and crumbling. Chances are your installation is over a wood subfloor and/or backer board. Maybe the floor was prepared incorrectly.…

ANSWER - The allowable vapor emission rate depends on what installation and tile products you are using. Generally speaking the standard for the floor covering industry and what most installation product manufacturers publish is 3…

ANSWER - The question is why the epoxy grout turned white?  Sometimes if there is excessive moisture it can cause discoloration.  If the epoxy is performing well other than it is the wrong color, then…