From shingles and starter strips to roof deck protection, leak barriers, ventilation, and commercial roofing systems.

Why builders choose GAF

GAF describes itself as North America’s largest roofing and waterproofing manufacturer and says its portfolio includes residential and commercial roofing products and accessories, including asphalt shingles, metal roofing, roofing membranes, coating systems, and more. Its residential roofing materials lineup also spans shingles, leak barriers, hip and ridge cap shingles, roof deck protection, starter strip shingles, ventilation and attic vents, and residential roll roofing. Commercially, GAF highlights systems including TPO, polyiso insulation, and roof coatings.

GAF is a roofing-focused brand with a broad product ecosystem rather than a single-material catalog. For residential projects, the brand’s system approach brings together shingles, starter strips, roof deck protection, leak barriers, ventilation, and rooftop accessories so the roof can be built as a coordinated assembly rather than a loose mix of unrelated parts.

For commercial work, GAF extends beyond steep-slope roofing into low-slope systems and supporting materials, including TPO, liquid-applied roofing, polyiso insulation, and roof coatings. That makes the brand relevant not only for finished roof surfaces, but also for broader roof-system performance, durability, and specification-driven applications.

Shop GAF roofing products

Explore GAF products available in this collection, including roofing materials and related system components for residential and commercial applications. Depending on the products currently in stock, this collection can include shingles, starter strips, roof deck protection, leak barriers, rooftop accessories, and other roof-system materials built to support moisture control, weather resistance, and assembly performance.

What makes GAF different

  • System-based roofing approach

    GAF structures its residential offer around the full roof assembly, including shingles, starter strip shingles, roof deck protection, leak barriers, ventilation, and rooftop accessories. This makes it easier to evaluate products as parts of a working system instead of isolated components.

  • Protection where roofs fail first

    GAF specifically positions roof deck protection to help shield the roof deck from moisture infiltration, leak barriers to help prevent leaks from wind-driven rain and ice dams, and starter strips to help reduce the risk of shingle blow-offs. Those details matter because edge conditions, vulnerable penetrations, and moisture exposure often determine how a roof performs over time.

  • Residential and commercial range

    Beyond residential roofing products, GAF also offers commercial roofing systems that include TPO, polyiso insulation, and roof coatings. That wider range makes the brand relevant across both steep-slope and low-slope roofing needs.

GAF FAQs

What is GAF known for?

GAF says it is known as North America’s largest roofing and waterproofing manufacturer. The brand produces residential and commercial roofing products and accessories, including asphalt shingles, metal roofing, roofing membranes, coating systems, and more.

Is GAF only a shingle brand?

No. GAF offers much more than shingles. Its residential lineup includes starter strip shingles, leak barriers, roof deck protection, ventilation and attic vents, hip and ridge cap shingles, and rooftop accessories. On the commercial side, it also offers systems such as TPO, polyiso insulation, and roof coatings.

What do GAF leak barriers and roof deck protection do?

GAF describes roof deck protection as an extra layer between roofing shingles and the roof deck that helps shield the deck from moisture infiltration. It describes leak barriers as products that help prevent leaks caused by wind-driven rain and ice dams, especially in vulnerable areas of the roof.

Does GAF offer products for commercial low-slope roofing?

Yes. GAF’s commercial roofing materials include systems such as TPO, liquid-applied roofing, polyiso insulation, and roof coatings. GAF also states that its EnergyGuard polyiso insulation is designed for use in low-slope roofing applications.

GAF buying guides & resources

  • What Makes Up a Complete GAF Roofing System?

    A GAF roof is more than a shingle. Learn how shingles, starter strips, roof deck protection, leak barriers, ventilation, and rooftop accessories work together in a complete roofing assembly.

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  • Roof Deck Protection vs Leak Barrier: Where Each GAF Layer Fits

    These two layers do different jobs. This guide explains how GAF positions roof deck protection to help shield the deck from moisture infiltration, while leak barriers help prevent leaks caused by wind-driven rain and ice dams.

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  • Starter Strips, Ridge Components, and Accessories: The Overlooked Parts of Roof Performance

    Smaller components often decide how cleanly and securely a roof comes together. Explore how GAF starter strip shingles and rooftop accessories support edge performance, finished details, and leak resistance.

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