Steep Slope Roofs in the Wind

This presentation was initially provided at the 2021 Convention and Tradeshow in Phoenix, Arizona

Do you get projects that may involve steep roofs? The Roofing Industry Committee on Weather Issues (RICOWI) has inspected hundreds of steep roofs as part of its Wind Investigation Program (WIP). These post-hurricane investigations have led to a better understanding of the strengths and weaknesses of the wind performance of metal panel, tile, and asphalt shingle roofs. This presentation will discuss the systems, strengths, and detail where consultants and inspectors can focus to ensure a wind-resistant steep roof.

Since the inception of the RICOWI WIP in 1996, there has been wind tunnel, full-scale and laboratory-designed wind research and testing. This research has resulted in better products and systems, but the fury and duration of hurricanes test every aspect of design and installation. Using photos from six WIP investigations, participants will see how systems have improved and where more attention is needed. This information can be used to design roofs for all climates and wind zones.

David Roodvoets

DLR Consultants | Tampa, FL

David Roodvoets has had a leadership role in all six RICOWI hurricane investigations. He has worked with ARMA on asphalt shingle wind resistance and test standards and has been involved with post-storm wind damage investigations for 40 years. Roodvoets has worked with wind research engineers in testing of asphalt shingles, vegetative systems, photovoltaic systems, single-ply, and ballasted roof systems. As a result, manufacturers have incorporated improved design and installation requirements, and changes have been developed, advocated for, and incorporated into the ICC family of codes.