Description: Unlike some companies that have a vested interest in a particular roofing technology, GAF offers virtually every major roofing technology (asphalt shingles, BUR, modified bitumen, Composite/hybrid, TPO, PVC, EPDM, and roof restoration) and over 4,000 system configurations (even several that are EnergyStar qualified). So rather than a one-roof-fits all approach, GAF will always try to match the right technology to your specific roofing application.