Black Jack, 4.75 Gallon, Non-Fibered Roof & Foundation Coating, Refined Asphalt Base Coating Is Designed For The Resaturation & Preservation Of Most Types Of Composition, Built Up, Smooth & Granulated Roll Roofing, Not For Use On Shingle Roofs, Use As A Primer On Dried Out Roofing Felts & On Cured Concrete Decks Prior To The Application Of Fibered Roof Coating. Use It To Coat Pipes, Gutters, Spouts & Other Structual Iron For Protection Against Rust & Water Damage, 4 Hour Dry Time, To Touch, Coverage Of 375-750 SQFT Per 5 Gallon pail, Allow 36 Hours Before Back Filling.