Black Jack TuffSeal, 475 Gallon, 7 Year Roof Flashing Cement, Premium Asphalt Based Sealing Compound Designed To Repair Cracks, Seams Holes In Roofing Materials, Also Designed For Use In New Construction In Setting Flashings, Drip Edges, Other Roofing Edges, Provides Tight Seal Layer Of Waterproofing Protection, Can Be Used Below Grade, Stops Leaks Fast, Great On Flat Or Vertical Surfaces, Long Lasting Crack Resistant Seal, Better Stick In Wet Or Dry Conditions, Dries Black, 1 Gallon Covers Approximately 12 SQFT When Applied 18 Thick, Do Not Store At Temperatures Above 100 Degrees