Derek Josephson, RRO, REWO

Senior Consultant

Derek E. Josephson joined Professional Roof Consultants, Inc. in 2013 as a Roof Inspector.  His experience includes over sixteen years in the construction industry with more than 6 years as a roof consultant for a nationally recognized firm where he provided roof evaluations, roof specification development, and quality assurance services for various clients throughout the United States.  Mr. Josephson brings a broad range of practical experience including eight years as a contractor installing shingle, wood shake, and single ply roof systems, as well as installing fenestration and building envelope systems in residential and light commercial applications.  His expertise in the roofing industry includes knowledge in numerous roof systems including BUR, modified bitumen, single ply, and a variety of steep roof systems.


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


  • 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, camping enthusiast, and aspiring nature photographer.

Fun fact:  My experience as a consultant has taken me to 39 of 50 states including Alaska as well as Canada, England, France, Germany, The Netherlands, Switzerland, and Scotland.

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