GAF Inspector Reviews Cornerstone’s Roofing Work


We care so much about the quality of work we do. That we invited a GAF inspector out to check one of our roofs.

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GAF was founded in 1886 and has become North America’s largest manufacturer of commercial and residential roofing (Source: Fredonia Group study). Their success in growing their company to nearly $3 billion in sales has been a result of a relentless pursuit of quality, combined with industry-leading expertise and comprehensive roofing solutions. (

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