GAF is North America's largest roofing manufacturer, known for producing high-quality and innovative roofing materials. The company offers a wide range of roofing solutions including asphalt shingles, solar roofing, TPO roofing systems, and low-slope asphalt solutions. GAF is committed to sustainability and provides various resources to support homeowners, contractors, architects, and building managers in designing and maintaining durable, attractive roofs. With a focus on durability, energy efficiency, and aesthetic appeal, GAF's products like the Timberline HDZ shingles have become highly popular. The company also offers contractor certification programs and warranties to ensure the best service and product performance.