Because the characteristics of natural stone vary, research should be done to ensure you choose the correct stone tile for your project. See below for more information on natural stone tile:
Water sensitivity greatly varies between types of stone. Many marbles and serpentines will warp or curl when exposed to water. To avoid warping, an epoxy adhesive bond coat should be applied. Proper research on specific natural stone is encouraged before installation.
If two or more stones are placed together in a floor, it is possible that these stones will wear at different rates. If any materials used together have an abrasion resistance less than 20.0 when tested per ASTM C241 or C1353, the difference in abrasive resistance between the two stones should ideally be less than 5.0.
Some stones will etch when exposed to acids. Etching is not a stain, and cannot be removed from stone without refinishing. Acid-sensitive stone tile should not be installed where exposure to acid is possible.
Grouting Natural Stone:
Light-colored marbles, onyx, and limestone are susceptible to staining if installed with grey bonding mortars or silicone. White mortars are the best option for installing natural stone tile.