Through the Roof is the clear, ultra-elastic sealant made to permanently stop and prevent roof leaks. It effectively seals around a variety of roof fixtures without the messy look of asphalt. Plus, through the Roof won't dry hard and crack like traditional asphalt repair products and lasts 20 times longer. It expands and contracts with temperature changes, leaving you with a repair that sticks but won't stick out. Adheres to metal, plastics, asphalt, brick, ceramic tiles, concrete, stone, mortar, stucco, polyurethane, glass, terra cotta, cement, wood, cloth/canvas and polyisobutylene.