|Firestone Building Products manufactures and markets a full line of roofing systems, insulation and accessory products for commercial roofing applications.|
|Carlisle introduced single-ply membrane roofing systems nearly 40 years ago and today is considered the leader in product innovation and the industry's resource for single-ply roofing solutions.|
|Johns Manville, a Berkshire Hathaway company, is a leading manufacturer and marketer of premium quality building materials and other specialty products.|
|GAF Materials Corporation has grown to be North America's largest roofing manufacturer because unlike some manufacturers who market a wide range of building prouducts, GAF's focus is on roofing.|
CertainTeed Corporation is a leading manufacturer of quality building materials, for new construction and home remodeling needs.
|U.S. Intec®, a division of BMCA, is the oldest manufacturer of APP (atactic polypropylene) modified bitumen roofing products in the United States.|