Wind

Standing Seam Metal Roofs

Research The performance of commercial roof systems under wind loads is dependent on two main factors: (1) the wind loads the building is subjected to and (2) how these wind loads are transferred through the roof system. While there is a good understanding of the wind loads that low-rise buildings are subjected to, the performance…

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Wind

Single-Ply Membrane Roofs

Single Ply Roofing Industry Research During 2017, IBHS staff met again with the Single Ply Roofing Industry (SPRI) organization regarding various uplift test options and a set of action plans to better understand wind loads and performance of flexible roof membranes. SPRI has created a task force to examine how single-ply roof systems are evaluated…

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Hail

Shingle Performance Ratings

Impact-Resistant Shingle Performance Ratings Consumers deserve to have confidence that shingles labeled as impact resistant live up to expectations.​ IBHS and its members recognized the growing problem of hail damage in large regions of the United States and have devoted years to field and lab research to develop a new test standard for impact resistance.…

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