Protection for low sloped roofs. Thick, high-quality coating seals fine cracks and openings. Renews and rejuvenates old composition roofing and prolongs roof life. Also performs well on metal or concrete surfaces. Apply with brush or broom. Coverage per 100 sq. ft.: Composition roofing, 2 to 3 gallon; metal surfaces, 1 to 1-1/2 gallon; concrete/masonry, 3 to 4 gallon. ASTM (American Society for Testing and Materials) D-4479 certified.