- Oregon
- Western Pacific Roofing
- Nail It Roofing
- Greater Portland Roofers JATC
- Umpqua Roofing Co. Inc.
- Forensic Building Consultants
- Stedman Sheet Metal Inc.
- Jerry Henderson
- Wagner Meters
- HOMEMASTERS Portland SW
- Giron General Construction LLC
- Spearhead Roofing Company
- Class A Roofing Consultants
- NBS Consulting Services
- Advanced Structural Forensics LLC
- West Coast Forensics Engineering & Design LLC
- Bliss Roofing Inc.
- Evergreen Roofing of Oregon
- Interstate Roofing Inc.
- River Roofing Inc.
- Jim Fisher Roofing & Construction Inc.
- Eagle Roofing Co.
- Malarkey Roofing Products
- Snyder Roofing & Sheet Metal Inc.
- Griffith Roofing Co.
- Anderson Roofing Co. Inc.
- ABC Roofing Co.
- McDonald & Wetle Roofing & Sheet Metal Contractors