Tiles can cost less than $2 to more than $100 per square foot. Terra-cotta, glazed, and quarry tiles are often at the low end of the range. Stone, specialty, and antique tiles are usually at the high end.
Abrasion-resistance is rated on a scale that specifies where the tile can be used. Breaking strength must be at least 250 pounds.
Tiles are rated nonvitreous (absorbs 7 percent or more water), semi-vitreous (absorbs 3 to 7 percent), or impervious (absorbs 0.5 to 3 percent).