Black Jack, 3.6 QT, Non-Fibered Roof & Foundation Coating, Refined Asphalt Base Coating Is Designed For The Restoration & Preservation Of Most Types Of Composition, Built Up, Smooth & Granulated Roll Roofing, As Well As Foundation Block Walls Below Grade & Masonry Roof Surfaces, Can Also Be Used To Seal & Protect Underground Wood Footings & Metal Surfaces, 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 Structural Iron Above Or Below Grade For Protection Against Rust & Water Damage, 4-8 Hour Dry Time To Touch, Coverage Of 70-100 SQFT For 1 Gallon Per Coat, 2 Thin Coats Recommended, Allow 36 Hours Before Back Filling.