Understanding FM VSH

Abstract
Commercial and industrial insurer FM Global and its code-approved testing agency subsidiary, FM Approvals, have implemented a Very Severe Hail (VSH) impact-resistance classification that could affect some of the work you do.

Date
12/2017

Author(s)
Mark Graham

Page(s)
22-25

Source
Professional Roofing / National Roofing Contractors Assn

Keyword(s)
FM global guidelines; hail classifications; roof systems designers

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