- Pennsylvania
- Belcher Roofing Corp.
- Tuscano-Maher Roofing LP
- Robert E. Linck
- SFS intec Inc.
- Ream Roofing Associates Inc.
- Tecta America East LLC - Glen Rock
- Weather Control Co.
- NIKO Contracting Co. Inc.
- Lemus Construction Inc.
- Florida Consulting LLC
- GP Martini Roofing Co. Inc.
- Stevenson Contracting LLC
- Jemar Contracting LLC
- American Architectural Metal Manufacturers Inc.
- Levine & Co. Inc.
- Yohe Roofing Inc.
- J.M. Young Sons Inc.
- Roofing Contractors Association
- Munn Roofing Corp.
- R.H. Marcon Inc.
- Alabek Commercial Roofing Corp.
- Voegele Co. Inc.
- Equipter LLC
- Houck Services Inc.
- J.L. Robinson Roofing Inc.
- NRC Roofing Co.
- Richard L. Sensenig Co.
- Daniels Consulting Engineers, LLC
- Sheppard Contracting Inc
- Design Support Services of Philadelphia LLC
- Jacobs Engineering
- Hodgkinson Home Improvements Inc.
- Scout Restoration
- Green Frog Restoration
- Susquehanna Valley Roofing Services Inc.
- All-Type-Roofing
- Middle Creek Roofing
- North American Roofers Inc.
- Weaver Roofing & Exteriors
- ESR Energy Saving Roofing
- Doing It Right Roofing Siding Remodeling LLC
- Tecta Solar
- Moser Roofing Solutions LLC
- Professional Roof Services Inc.
- MLB Engineering LLC
- Brink Roofing
- Engineering and Technical Consultants
- Beres Contracting Inc.
- Power Home Remodeling Group LLC
- The Cedar Roof Co.
- Burns & Scalo Roofing Co. Inc.
- Vince Hee Roofing
- Professional Roof Services Inc.
- Arkema Inc.
- Plick and Associates Forensic Eng
- Henderson Design & Construction Inc.
- Maintenance Management Inc.
- Pro Com Roofing Corp.
- Dataforma Inc.
- Northwestern Roofing Co. Inc.
- Schultheis Roofing Inc.
- Versico Inc.
- Matrix Roofing Systems Inc.
- Heidler Roofing Services Inc.
- SRI Roofing & Sheet Metal
- Asko Roofing Inc.
- York Roofing Inc.
- Roof Surveys & Informational Services
- C&D Waterproofing Corp.
- Wolfe Roofing & Sheet Metal Inc.
- Roof Pro Inc.
- C&C Family Roofing and Siding
- GSM Roofing
- Joseph Jenkins Inc.
- J.M. Gangloff Roofing Inc.
- Welte Roofing Co. Inc.
- Nauman Contracting
- Dependable Roofing Inc.
- Russell Roofing Co. Inc.
- C.D. Kaller Inc.
- ATAS International Inc.
- Intertek - ATI
- Jurin Roofing Services Inc.
- Cambridge-Lee Industries Inc.
- Shea Roofing
- Roofing Metal & Heating Associates Inc.
- Pittsburgh Corning Corp.
- Bayer MaterialScience
- T.G.W. Corp.
- CertainTeed Corp.
- Double D Roofing & Sheet Metal Inc.
- Raintree Services Inc.
- Chilson Brothers Inc.
- Haftl Roofing Co. Inc.
- Stringert Inc.
- Wm. M.E. Yeakel & Sons Inc.
- Momentum Builders Inc.
- David M. Maines Associates Inc.
- Hamada Roofing Inc.
- Saling Roofers Inc.
- Triangle Roofing Inc.
- The Gehringer Corp.