Derek Josephson, RRC, RRO, REWO

Senior Consultant

Derek E. Josephson joined Professional Roof Consultants, Inc. in 2013.  His experience includes over 20 years in the construction industry with 13 years as a praticing building envelope consultant.  His primary responsibilities with PRC include project management and design services for building envelope projects; detailed investigations and assessments of builidng envelope assets; and quality assurance inspections for various construction projects.

Mr. Josephson also brings a broad range of practical experience developed during his time as a general contractor installing roof systems, fenestration, and cladding systems in both residential and light commercial applications.  This experience enables him to focus on constructible and functional solutions to design challenges presented in current projects.


  • Kirkwood Community College (Cedar Rapids, IA) Business Administration coursework
  • Built-up Roofing - University of Wisconsin-Madison College of Engineering Professional Development


  • Registered Roof Consultant (RRC)
  • Registered Roof Observer (RRO)
  • Registered Exterior Wall Observer (REWO)
  • Certified InstallationMaster™ The Installation Masters™ Training and Certification Program (developed by AAMA)
  • AHERA Certified Asbestos Inspector
  • OSHA 10 Hr. Certified


Away from the office, Derek enjoys spending time with his wife exploring Portland’s diverse culinary landscape.  He is also an avid cyclist, which helps to offset their culinary adventures.  During the summer months, Derek enjoys discovering new camping destinations in the Pacific Northwest and beyond.

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