Polyflex G membranes are premium, polyester reinforced APP modified bitumen roofing membranes specially designed for heat-welded applications. Constructed with premium Atactic Polypropylene resins, and incorporating superior polyester reinforcing, Polyflex G provides an exceptionally durable roofing product which is easy to install and will provide long-term weathering performance. With a granulated surface (available in several colors) and either a polyolefin or sand backing, Polyflex G exceeds all minimum ASTM standards for tensile strength, puncture resistance and flexibility. Polyflex G membranes can also be used as flashing membranes in all applicable specifications, in accordance with recommended installation practices.