Professional grade tile and stone adhesive. Engineered for the intermittent water exposure seen in tub surrounds and shower walls. Sag resistant and ideal for small format tile, pavers and stone installation on walls, floors and countertops. Recommended for tile up to 8 (20 cm) on any side, but can be used up to 15 (38.1 cm) with significantly longer dry times. Meets ANSI A136.1, Type 1