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Title
Against the Win
Against the Win
Date
10/2019
10/2019
Author(s)
Bob LeClare
Bob LeClare
Page(s)
42-45
42-45
Keyword(s)
metal; flashing; standard; ANSI; SPRI
metal; flashing; standard; ANSI; SPRI
Abstract
The Roofing Industry Committee on Weather Issues Inc. has investigated hundreds of metal panel roof system failures resulting from high-wind events, including Hurricanes Charley, Ivan, Katrina, Ike and Irma. In every RICOWI report, metal flashing failures are cited as a cause of metal panel roof system failures. A new standard, ANSI/MCA FTS-1-2019, “Test Method for Wind Load Resistance of Flashings Used with Metal Roof Systems,” has been developed by the Metal Construction Association to provide a method for testing metal roof flashings with the goal of improving the wind resistance of metal roof systems. When flashings fail, metal roof panels are exposed at the edges and ridges, and the roof system can peel. When a flashing system has been tested to resist design wind loads, it is less likely to fail, and the roof panels are more likely to stay secure.
The Roofing Industry Committee on Weather Issues Inc. has investigated hundreds of metal panel roof system failures resulting from high-wind events, including Hurricanes Charley, Ivan, Katrina, Ike and Irma. In every RICOWI report, metal flashing failures are cited as a cause of metal panel roof system failures. A new standard, ANSI/MCA FTS-1-2019, “Test Method for Wind Load Resistance of Flashings Used with Metal Roof Systems,” has been developed by the Metal Construction Association to provide a method for testing metal roof flashings with the goal of improving the wind resistance of metal roof systems. When flashings fail, metal roof panels are exposed at the edges and ridges, and the roof system can peel. When a flashing system has been tested to resist design wind loads, it is less likely to fail, and the roof panels are more likely to stay secure.