TPO is a single-ply roofing membrane that offers excellent performance at a cost-effective price.
EPDM is an extremely durable synthetic rubber roofing membrane (ethylene propylene diene terpolymer) widely used in low-slope buildings in the United States and worldwide
Traditional bituminous roofs were made with roofing felts and several mopped layers of hot asphalt, surfaced with gravel, to create a Built-Up Roof (BUR)