Black Jack All-Weather Roof Cement, 1 Gallon is an asphalt-based patching compound specially formulated to repair cracks, seams, and holes in roofing materials. This versatile cement is i for both new construction and repair projects, effectively sealing damaged areas and providing a durable, waterproof layer of protection. It is for use around skylights, vents, exhaust pipes, chimneys, valleys, and in the installation or repair of flashings, roll roofing, and shingles. Additionally, it serves as a heavy-duty below-grade and underground waterproofer and dampproofer. For larger repairs, it is to reinforce the area with a strip of reinforcing fabric to ensure maximum durability. Please note that Black Jack roof cement cannot be painted. Model Number: