GAF certified commercial roofing contractor rolling out a commercial roofing membrane

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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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Resources to help you choose a roofer

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View resources for commercial roofing systems, and roof maintenance.

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Certification & Awards

**Eligibility requirements, coverage, terms and restrictions apply and vary based on the enhanced system guarantee and the system installed. For details and to view the full Diamond PledgeTM NDL roof Guarantee, visit the GAF Document Library at gaf.ca/en-ca/document-library.

Resources to help you extend the life of your roof

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Property maintenance protects your building and your business. Connect with GAF for information on roof maintenance plans and options.
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Commercial roofing tips

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Customer support

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*Contractors enrolled in GAF certification programs are not employees or agents of GAF, and GAF does not control or otherwise supervise these independent businesses. Contractors may receive benefits, such as loyalty rewards points and discounts on marketing tools from GAF for participating in the program and offering GAF enhanced warranties, which require the use of a minimum amount of GAF products. Your dealings with a Contractor, and any services they provide to you, are subject to the Contractor Terms of Use.