Black jack, 3.6 qt, roll roofing adhesive, liquid applied, brushable, asphalt based adhesive designed to bond sheets roll roofing & also adds additional waterproofing protection to the roof surface, no heating needed, bonding adhesive for new construction or repairs, use with rolling roofing, great adhesive & bonding strength, fiber reinforced, heavy brush grade, for exterior use only, clean up with mineral spirits, cure time 24-48 hours, covers approximately 40-45 sqft per gallon.