Vulkem® HT Underlayment is a high-temp, self-adhering underlayment designed for use as a secondary barrier to moisture under metal, asphalt shingles, slate and tiles. The membrane consists of a versatile bitumen compound with enhanced adhesion, allowing it to adhere to many surfaces such as plywood, OSB, concrete, wood particle, and gypsum cover boards. The exposed surface of the Vulkem HT Underlayment is composed of a tough, woven polymer laminate providing a durable yet walkable surface, that provides excellent high-temperature resistance.
