For interior use on floors, walls, and countertops. Spreads quickly and easily and offers extended open times for adjusting tile. Provides higher bond strength required for 12 in x 12 in ceramic floor tile installations and exceptional durability in wet areas. Offers maximum resistance to intermittent water exposure such as, tub surrounds and shower walls as defined by ANSI A136.1, Type I. Protected by MoldGard technology to resist mold and mildew growth. Uses on ceramic, mosaic, quarry, pavers, gauged slate,porcelain and gauged stone tile. Covers approximately 40-60 sq. ft. per gallon using a 3/16 in x 5/32 in V-notch trowel.