Heng's Trimmable Butyl Tape is ideal for rubber roofs. It is an off-white, non-hardening elastic butyl based material that provides excellent sealing adhesion to any type of metal, wood, concrete, glass, plastic, and porous surfaces. Can be used under moldings, around windows, doors, and vents. Can be trimmed easily with any stiff, pointed non-scratching object. Increases in adhesion with age after it is applied. Can be pressed and formed to obtain a water and air tight seal. Recommended temperatures are between -30°F and 200°F. Best results if applied at room temperature on dry materials. One year shelf life.
