GAF 
Founded in 1886, GAF is the largest roofing manufacturer in North America. Offering high quality products in steep-slope and commercial roofing systems, GAF is your best and safest choice. In 2011, GAF was the first roofing manufacturer to offer a lifetime limited warranty on all of its laminated shingles and, in 2012, it introduced the GAF Lifetime Roofing System.
SFS intec
Fastening systems for commercial flat roofing and membrane attachment. Product offering includes fasteners, stress plates, assemblies, belted systems, nail board fasteners and specialty products. The IR2 fastener is an austenitic stainless steel fastening solution for attaching membrane and insulation to steel deck. ISO-TAK fasteners are a thermal efficient flat roofing solution.