Heng's Trimmable Butyl Tape is ideal for rubber roofs and is engineered to be an off-white, non-hardening elastic based butyl material that provides excellent sealing adhesion to any type of metal, wood, concrete, glass, plastic, or porous surface. Great for use under moldings and around windows, doors, and vents. Adhesion increases with age after application. The recommended temperatures are -30°F to 200°F.
