Black Jack, 3.6 QT, White Roof Patch, Elastic Crack Sealer & Repair, Stops Leaks, Long Lasting Flexible Repair, Best Patch For White Or Aluminum Coatings, Use With Reinforcing Fabric, Extra Tough, Flexible Repair Compound Designed To Patch Splits, Cracks & Holes In Roof Surfaces Up To 1" Wide, Water Based, Dries Quickly To Non-Tacky Surface, Offers Great Adhesion To All Coatings Applied Over It.