Metal Man High Temperature Peel & Stick Underlayment is a self-adhesive waterproofing membrane composed of SBS modified bitumen and a tough UV anti-slip polyethylene woven top facer. It is designed for use in high temperature environments where the in-service temperature can reach temperatures as high as 240°F. The release film backing is also UV resistant and protects the product from degradation when stored outside for less than 90 days without the need for a cardboard box. This self sealing, high tensile strength underlayment will provide maximum waterproof protection before, during and after the installation of a metal roof system.