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Specifying wind resistance shingles

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Abstract
Many have expressed concern that UL 997, the standard test for wind performance of shingles (run at 97 km/h) is not adequate considering the oces have design wind speeds from 145 km/h t0 240 km/h. The science behind the wind resistance of shingles and the route to new test standards are the subjects of this article.
Date
10/2000
Author(s)
David Roodvoets
Page(s)
33-38
Keyword(s)
wind resistance; seal strip; blowoff; pressure coefficient;


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