- California
- Roy O. Huffman Roof Co.
- Builders Booksource
- Pacific Building Consultants Inc.
- Channel Islands Roofing Inc.
- Scudder Roofing Co.
- Clark Roofing Co.
- Independent Roofing Consultants Inc.
- Brussel Consulting & Construction Management
- C&J Roofing Co. Inc.
- Blue's Roofing Co.
- Alcal Specialty Contracting Inc.
- Crank Brothers Roofing Co. Inc.
- XL Services
- Angelo Consulting Inc.
- FV+A Architecture
- Henry Company
- Warren Construction & Roofing Inc.
- Nations Roof
- Western Roofing Service a Tecta America Co
- The Lawson Roofing Co. Inc.
- Fidelity Roof Co.
- Enterprise Roofing Service Inc.
- Atlas Roof Consulting Inc.
- Quality Roofing Santa Barbara Inc.
- Cool Roofing Systems
- Mr. Roofing Inc
- Antis Roofing & Waterproofing inc.
- Graham Prewett Inc.
- CentiMark Corporation
- XNS Incorporated
- Mid Peninsula Roofing Inc.
- Renovation Roofing Inc.
- Weir/Andrewson Associates
- Platinum Roofing Inc.
- Saber Roofing Inc.
- C.I. Services Inc.
- A Good Roofer Inc.
- Brian Hobbs Roofing Inc.
- State Roofing Systems Inc.
- Statewide Roofing Inc.
- Weathertight Roofing Inc
- D 7 Roofing Services Inc.
- Roofing & Weatherproofing Services
- Construction Defect Professionals, Inc.
- Bradley W. Hughes
- Urban Green Investments
- Jacobs Engineering
- Cal-Pacific Roofing Incorporated
- Shell Roofing Solutions Group
- Bay Quality Roofing
- MGS Architecture
- MIK Construction Inc.
- EM
- ZAAP INC
- Sacramento Steel Roofing
- FoamBond Corporation
- Pacific Coast Roofing Services
- Castro Roofing Inc.
- Advanced Metal Works Inc.
- Tecta America Southern California Inc.
- GoGreen Roofing Inc.
- Medrano Roofing Inc.
- Pinnacle Roofing
- Roseville Roofing
- RHA Construction Forensics Group
- Epilay Inc.
- ICC Evaluation Service LLC
- Smith's Roofing
- Division 7 Services Inc.
- Building Power
- Heitmann & Associates Inc.
- McCarthy Roofing Inc.
- Roof Tech Inc.
- Robert Robles Architecture Inc.
- Kuhlman Roofing Co. Inc.
- Red Pointe Roofing
- Ben's Roofing Inc.
- Thomsen Roofing
- Exbon Development Inc.
- Bill Hamilton Roofing Inc.
- Bay Valley Contractors
- Marx/Okubo Associates Inc.
- Regan Roofing
- RoofCorp
- David Reed Consulting
- Roof Resources Inc.
- CDCR Facility Construction and Management
- Unified Building Sciences Inc. (West)
- Gale Associates Inc.
- Straight Line Roofing & Construction
- Natural Slate Roofing Inc.
- Sequoia Roofing Services
- Rimkus Consulting Group Inc.
- Quick Mount PV
- McCarthy Building Company
- Chapman Coast Roof Co. Inc.
- Waterproofing Associates
- Wiss Janney Elstner Associates Inc.
- CDC Inc.
- CDC Inc.
- Independent Roofing Consultants Inc.- Northern CA
- Nations Roof
- Haag Engineering Co.
- McDonnell Roofing Inc.
- Wes Hoffmaster
- Ross Roofing & Construction Inc.
- Precision Roofing
- Roofers Exchange/Roofers Coffee Shop
- Cal-Vintage Roofing Co. Inc.
- Tecta America Sacramento Inc.
- Wiss Janney Elstner Associates Inc.
- Rimkus Consulting Group Inc.
- California Roofing Co. Inc.
- Orange Coast Building Services Inc.
- Just Leaks Inc.
- Fontaine Weatherproofing Inc.
- Rey-Crest Rfg. & Waterproofing Co.
- Bilt-Well Roofing & Solar Inc.
- Summit Roofing Services
- Professional Community Management Inc.
- Los Gatos Roofing
- SBR Inc.
- Skycraft Roofing Inc.
- Northern California Roofing Co.
- Tru-Tech Roofing and Waterproofing
- Highland Commercial Roofing
- Adco Roofing Inc.
- Byers Roofing
- Baker Roofing Co.
- Action Roofing
- Gerald Roofing Technologies
- Roofing Contractors Association of California
- Arithane Foam Products Inc.
- Lang Roofing Co. Inc.
- Central Coating Co. Inc.
- Malott & Peterson Roofing Co.
- Craig Roof Co. Inc.
- DePinho Roofing
- Avanti Roofing Inc.
- Roofmaster Products Co.
- Shaughnessy Roofing Inc.
- Van Dijk & Associates Inc.
- Cleasby Manufacturing Co. Inc.
- Bell Roof Co.
- PetersenDean Roofing and Solar
- Interactive Resources
- South Coast Roof Inc.
- Commercial & Industrial Roofing Co. Inc.
- Roofing Contractors Association of Southern California
- Mission Valley Roofing Inc.
- Western Pacific Roofing Corp.
- Quaglino Roofing
- J.P. Witherow Roofing Co.
- Bigham Taylor Roofing Co. Inc.
- Urbach Roofing Inc.
- Madsen Roofing & Waterproofing Inc.
- Alameda Roofing Service Inc.
- Western Pacific Roofing Corp.
- Martin Roofing Co. Inc.
- Garcia Roofing Inc.
- BEST Contracting Services Inc.
- Davco Waterproofing Services Inc.
- Harrington Construction Co. Inc.
- National Coatings Corp.