GAF Materials Corporation

GAF Materials Corporation, operating under the parent Standard Industries, is the largest roofing and waterproofing manufacturer in North America. Founded in 1886 and headquartered in Parsippany, New Jersey, GAF commands over 25% of the US residential roofing market share with a brand heat score of 89/100 reflecting its dominant market position. Privately held as part of Standard Industries (group revenue ~10 billion), GAF operates 30+ large-scale production facilities across the United States.

Core Business in Fireproofing & Waterproofing

Under 8.2 Waterproof Membranes, GAF manufactures modified bitumen SBS/APP membranes, TPO single-ply roofing membranes, PVC membranes, and self-adhered underlayments. For 8.3 Waterproof Coatings, GAF produces fluid-applied silicone, acrylic, and polyurethane roof coatings. In 12.1 Insulation, GAF manufactures polyisocyanurate (PIR) rigid foam insulation boards. The company also supplies comprehensive building envelope systems combining waterproofing, insulation, and vapor control layers.

Manufacturing Scale

GAF's true competitive advantage lies in its extreme vertical integration. In 2025, GAF established a dedicated 'Specialty Products and Services' business unit that internalizes colored granule mining (through SGI subsidiary), glass mat manufacturing (Glass Mat), and logistics operations. Recent expansion includes a 275,000 sq ft Kansas super-factory, an Illinois insulation board plant, and a Georgia TPO membrane facility. This level of upstream control — owning mineral mines, fiberglass weaving, compounding, and extrusion — creates an unparalleled quality and cost advantage in the North American market.