Mastic butyl tape sealant is a highly rubbery, tacky, reinforced compound designed for sealing metal lap joints on roof and wall panels. It is easy to apply and compress during installation. Mastic butyl tape sealant exhibits excellent application and performance characteristics over a wide temperature range and will not become brittle, crack or flow.
Mastic butyl is designed to seal and prevent the entry of dust, air and moisture and assure a weather tight seal in metal building details
Resistant to ultraviolet and infrared radiations, precipitation atmospheric hydrocarbon contamination and extremes in temperature
Mastic butyl meets ASTM and federal standards, is non-staining and permanently flexible
Ideal for metal panel ribs, end joints, end laps, flashings, and sealing roof curbs roof jacks and skylights