Henry Blueskin PE200HT High Temperature Roof Underlayment is a self-adhered rubberized waterproof roofing membrane underlayment with a service temperature up to 260° F. It is used as a secondary waterproofing layer on sloped roofs in both residential and commercial buildings, protecting the building’s interior from damages caused by water infiltration as a result of ice dams or wind-driven rain. Blueskin PE200HT is designed to be adhered directly to wood, gypsum decks or certain insulation panels prior to the application of finished roof coverings such as shingles, cedar shakes, and some architectural metal and tiles.