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