Founded in 1886, GAF is the largest roofing manufacturer in North America, offering a comprehensive portfolio of steep-slope and commercial roofing systems, which are supported by an extensive national network of factory-certified contractors. Its success is driven by its commitment to Advanced Quality, Industry Expertise, and Solutions Made Simple. GAF’s Greenbuild Unity Home sponsorship is just one of the many steps that the Company has taken to support green-building training and roof recycling initiatives. In addition to sponsoring the Certified Green Distributor™ Program, GAF has instituted highly regarded internal sustainability efforts, including certifying five plants for Landfill Diversion. Moreover, GAF has launched the Certified Green Roofer Program, training more than 600 professional roofing contractors in green practices, and entered into a multiyear sponsorship of, a site that helps contractors and distributors connect with qualified shingle recyclers across the U.S. and Canada. GAF also offers a wide range of related resources at, including the “Cool Roof Energy Savings Tool” as well as resources to educate and inform roofers and contractors about the importance of cool roofs, roof ventilation, and green codes and rating systems.