Detailed answer
Factors That Change The Recommendation
Manufacturer certifications get treated as marketing badges by some contractors and meaningful credentials by others. The honest answer sits in the middle - they signal something real, but they're not a guarantee of quality.
GAF Master Elite contractors meet GAF's minimum requirements: current state contractor license, general liability and workers comp insurance, factory training, and a clean customer-complaint record reviewed annually. Roughly 2-3% of US roofing contractors hold the credential. Practical implications: Master Elite contractors can offer enhanced GAF warranties (Golden Pledge being the longest) that standard installers can't. They've passed a vetting screen that filters out unlicensed operators. But certification doesn't guarantee perfect workmanship - some certified contractors do excellent work, some are average. Treat it as a baseline screen, not a quality stamp. Verify license, insurance, and references independently regardless of certification status.
If You're In California Or New Jersey
California and New Jersey both have active GAF Master Elite networks. The certification matters most when you're considering GAF shingles and want the enhanced warranty - if you're choosing a different manufacturer (CertainTeed, Owens Corning), look at their equivalent certification programs (5-Star Master Shingle Applicator, Platinum Preferred).