GAF Materials Corporation is a world-class building products manufacturer with a foundation as North America's largest roofing manufacturer. Unlike most competitors, GAF does not have a vested interest in any specific roof technology, and therefore can focus on understanding customer's needs and then recommending the best solutions for repairing, maintaining, restoring or replacing a roof system. GAF markets the broadest solutions for Green Roofs including shingle and membrane systems that can be recycled, are Energy Star rated for reflectance, are vegetative and now can even incorporate solar powered renewable energy.