Floor tiles are rated for glaze wear and slip resistance, which are important factors to consider. Glaze ratings should exceed 3 for residential applications with the exception of bath areas that can use tiles rated 2. Tiles with a slip resistant rating of 0.5 or better should work well in most indoor residential applications.
Use caution when selecting tile for installations outdoors. Unglazed quarry tiles, tiles with heavily textured surfaces, or porcelain paver tiles, all with slip resistant ratings of 0.6 or greater are possibilities. They must also be frost resistant.
New latex modified mortars and grouts provide better strength while also allowing greater flexibility. Special caution:
Dropping objects on ceramic tile–particularly heavy ones–can chip even the best tiles.