A premium quality, state-of-the-art roof membrane used for waterproofing in both new roof construction and reroofing. It consists of a heavy polyester reinforcing mat sandwiched between two layers of modified asphalt. Bonded with SWEPCO Adhesive #9, it is the primary reinforcement in several SWEPCO new roof specifications and is also used as a flashing material. It provides superior strength and flexibility and a sound, stable base for the new roof. Resists moisture, rot, fungus, puncture and abrasion. Available in 2 mm and 3 mm thicknesses in Europe and 1.5 mm thickness in United States, Canada and Export markets.