Durable, non-shrinking grout accommodates tile joints up to 1/8" wide. Resists cracking, powdering and wear. Ideal for gloss finish, soft glazed ceramics or certain marble tiles which may be scratched by grouts containing sand. Can be used for interior or exterior installations, including floors, countertops, walls, ceilings, showers (walls & floors), fountains, and pools. May be used with the following tile types: Vitreous, semi-vitreous, or nonvitreous tile: ceramic, mosaic, quarry, cement body tiles, impervious porcelain and glass tile, brick and thin brick, precast terrazzo, and natural stone tile. Exceeds ANSI (American National Standards Institute) A118.6 standards. Rated for residential to extra heavy commercial use.