A tough, flexible asphalt based sealant that stops leaks fast around chimneys, flashings, roof decks, vents, loose shingles, coping, and parapet walls. Ideal for waterproofing, repairing and sealing roofs. It is weatherproof, seals leaks in all weather and withstands extreme temperature conditions. It works on wet roofs, and can be applied even in the rain or snow. Does not freeze. For exterior use only. Color: Black.