Philip D. Dregger, PE, RRC, Fellow IIBEC

Philip D. Dregger, PE, RRC, Fellow IIBEC is a roofing and waterproofing consulting expert specializing in litigation involving roofing failures, waterproofing defects, and condensation issues. With a career encompassing engineering, consulting, and expert testimony, he brings a multifaceted approach to analyzing complex building enclosure disputes. His work centers on investigating roofing and waterproofing failures, assessing compliance with California Title 24 Part 6 (Energy Code), and evaluating the impact of wind and hurricane damage.

Mr. Dregger has been retained in numerous expert witness and consulting engagements across the United States, involving cases related to roofing and waterproofing failures, wind damage, and energy code compliance. His Master of Science in Civil Engineering from the University of Minnesota, along with his credentials as a Professional Engineer and Registered Roof Consultant, reinforce his ability to deliver objective, defensible analyses. He is regularly engaged by both plaintiff and defense counsel to provide clear, independent determinations of causation in disputes involving roofing systems and building enclosures.