APPROXIMATE COVERAGE IS 175 SQFT WITH TWO COATS.LATICRETE Hydro Barrier is a thin, load bearing, self curing liquid rubber polymer which can be easily applied to form a flexible seamless waterproof anti-fracture membrane. LATICRETE Hydro Barrier can be used on interior and exterior, horizontal or vertical surfaces and is approved by IAPMO for use as shower pan liner.Uses:- Interior and exterior.- Swimming pools, fountains and water features.- Shower pans, stalls and tub surrounds.- Industrial, commercial and residential bathrooms and laundries.- Spas and hot tubs.- Kitchens and food processing areas.- Terraces and balconies over unoccupied spaces.- Countertops and facades.- Steam rooms (when used in conjunction with a vapor barrier).