August 2013

A preliminary protocol

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Following a well-founded protocol lends better results when evaluating wind-damaged roof systems

by Thomas L. Smith, AIA, RRC
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Editor's note: The following was adapted from the paper "Evaluating Wind-Damaged Low-Slope Roof Assemblies: A Preliminary Protocol," which was written by the author and presented in June at the 12th Americas Conference on Wind Engineering in Seattle.

Although there is major damage caused by wind events in the U.S. every year, there currently is no roofing industry standard or recognized protocol for investigators to use when evaluating wind-damaged roof systems. Because of the lack of a protocol or standard, some investigators have inadequately evaluated damaged roof systems.

Photo courtesy of Federal Emergency Management Agency (FEMA) Mitigation Assessment Team, Hurricane Katrina, 2005

Most of the roof membrane was blown off this building, and clearly these areas need to be replaced. However, on the vaulted roof, the membrane only was blown off along one end. An evaluation may show that only repairing the vaulted roof's damaged area is...

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