GAF certified residential roofing contractor holding package of Timberline HDZ shingles

Verify your roofing contractor’s GAF certification

GAF is North America’s largest roofing manufacturer. Contractors certified by GAF are trusted to offer our strongest guarantees and warranties.

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View resources for commercial roofing systems, and roof maintenance.

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Enter your contractor’s name or business to verify that they are certified by GAF.

Specialty Roofing