Expert Answers in

ANSWER - The spots from the alcohol glasses are etching the polished surface of the stone caused by the acidic nature of the alcohol. Some polished stone is more sensitive to this than others. This…

ANSWER - I assume when you say heavy duty homogenous tiles you are referring to an unglazed clay through-body tile and that it may be a ceramic porcelain tile that is very dense. Although these tiles…

ANSWER - I have never heard of granite showing heat marks. The natural granite itself should not be affected by heat. My guess is that there is some coating on the granite such as a…

ANSWER - True granite stone is normally very resistant to staining.  There are some stones sold as granite that are not true granites and they could be more susceptible to staining.  Some overburden stone (layers…

ANSWER - I assume you are using granite tiles since you mention grout joints, rather than seams which are the joints between larger slabs of granite. There are a variety of sealers on the market…

ANSWER - Normally brownish stains on tile in an exterior area are organic based caused by leaves or other plant materials that have deteriorated.  The fact that it is near a grout joint may be because…

ANSWER - There should not be a grout film left on the surface of the tile.  If the installer had been careful and cleaned it properly it could have been avoided. If the grout is cement…

ANSWER - What you use to remove the grout residue from a porous terracotta tile that was not removed during the installation process as it should depends on what kind of grout was used. A standard…