A duplex vapour retardant composed of two layers of kraft paper bonded together with asphalt. Strands of fiberglass reinforcement are intertwined near each edge for added strength and tear resistance. This product is designed as a vapour retarder over roof decks of steel, concrete or wood before the installation of the roof insulation.

IKO MVP is a self-adhering membrane used over various types of roof decks such as steel, concrete or wood. This vapour retardant is composed of modified rubber asphalt with a top surface film of high density cross laminated polyethylene. This product is designed as a vapour retardant before the installation of the roof insulation. This product should not be applied at temperatures below -10 C.