PR555071 MBL ALUM ROOF CTG 5GAL | Forms a tough, waterproof surface that insulates and yields an exceptionally bright finish. Due to its unique reflective, thermal qualities, it can decrease heating and air conditioning costs. This coating has the ability to keep the inside temperature of a building up to 15 deg cooler in summer. Designed to be the finest aluminum coating on the market today. Covers 50 to 125 sq-ft. per gallon depending on the type, age and condition of surface.