AcrylPro Ceramic Tile Adhesive is a professional formula adhesive with high bond strengths. Multi-purpose white, nonstaining high performance mastic is ideal for small format ceramic, marble, mosaic, porcelain, quarry tile, slate, and natural stone on walls or floors. Recommended for tile up to 8 In. on any side. Recommended for interior use only. May be used in areas with intermittent water exposure such as tub surrounds and shower walls. Do not use for steam rooms, shower floors or underwater. Not for use over radiant heat systems. Nonflammable. Coverage varies due to the substrate, type of tile, and size of notched trowel. On average 1 gallon covers 21 Sq. Ft. Installation dry time varies depending on the tile size and density, substrate porosity and ambient conditions. Minimum dry time for 8 In. x 8 In. tile is 24-72 hours before applying grout.