- Washington
- Icon Corp.
- Stanley Roofing Co. Inc.
- Wetherholt and Associates Inc.
- Cornerstone Roofing Inc.
- Tecta America Seattle LLC
- Jimmy's Roofing
- Trinity ERD
- ARK Commercial Roofing Inc.
- Achten's Quality Roofing
- Western Roofing Co. Inc.
- Scholten Roofing Inc.
- Patriot Roofing LLC
- CH2M Hill Inc.
- Bates Roofing LLC
- Pinnacle Roofing Professionals LLC
- Matrix Roofing
- Nations Roof
- Hanley Construction Inc.
- Marx/Okubo Associates Inc.
- Pierce County Roofers JATC
- Tedrick's Roofing Inc.
- Chase Construction North West Inc.
- Axiom Division 7 Inc.
- BCRA
- University of Washington Engineering Services
- Roofing Technical Services
- Mastercraft Roofing Inc.
- EagleView Technologies Inc.
- Dr. Roof Inc.
- Chinook Roofing & Gutters
- M.G. Wagner Co. Inc.
- Bosnick Roofing Inc.
- HyTech Roofing Inc.
- Building Envelope Technology & Research Inc.
- Cobra Building Envelope Contractors
- Gillespie Roofing Inc.
- Associated Roofing Inc.
- Boeing Enterprise Roofing
- Tile Roofing Institute
- Leslie & Campbell Inc.
- Savage Roofing Inc.
- Roof Toppers Inc.