Troy Roofing Company is a Certified Troy roofing contractor. This allows us to offer you the full line of roofing systems from the nation’s largest and most trusted roofing manufacturer. It also means that the kind of roofing Troy, MI residents will have is backed by GAF’s warranty, which guarantees both materials and workmanship. No other Metro Detroit, Roofing Contractor can offer you this high level of security and peace of mind.