Lastobond HT high-temperature roof underlayment provides waterproof protection before, during, and after the installation of metal roofing. Designed for use in hot climates where in-service temperatures as high as 250°F (121ºC) are expected, this self-adhesive waterproofing membrane composed of SBS modified bitumen and a tough UV-resistant, anti-slip polyethylene woven top facer. For more information, call Denise Kahl, 800-356-3521, ext. 234, or visit