Mastic butyl tape sealant is a 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.
WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.