Bostik Dry Tile Grout is formulated from select grades of ground quartz, portland cement, colorfast pigments and other special proprietary ingredients. Bostik grout provides superior hardness, consistent uniform color, strength and durability with a wide variety of tiles. Exceeds ANSI A118.6 when mixed with water and A118.7 when mixed with Bostik 425 Multi-Purpose Acrylic Latex Additive. Bostik Dry Tile Grout may be used for grouting glazed wall tile, marble or granite. Use Dry Tile Grout for grouting floors and walls whenever grout joint widths are less than 1/8″.