For over a century, more homes and businesses in the U.S. are protected by a GAF roof than by any other product. They are the leading roofing manufacturer in North America, with plants strategically located across the U.S. A member of the standard industries family of companies, GAF is part of the largest roofing and waterproofing business in the world. With a wide variety of high-performing residential and commercial roofing products that exceed customer expectations, you’ll be sure to find a roof to protect what matters most in your life.