For homeowners ready to go beyond their expectations, GAF has introduced Timberline UHDZ® Shingles — the premium laminate shingle. They feature GAF's patent-pending Dual Shadow Line for dramatic sunset shadows all day long, offering the 30-year StainGuard Plus PRO™ Limited Warranty against blue-green algae discoloration. Additionally, GAF Master Elite® contractors can offer 30 years of workmanship coverage when they install a qualifying GAF roofing system with Timberline UHDZ® shingles and register a Golden Pledge Limited Warranty.