Concerns with perlite board insulation

Abstract
Rigid perlite board insulation has, in a limited number of instances, blistered with its use in hot-applied roof membrane applications. Following is a brief overview of the history of NRCA's concern and research relating to this issue.

Date
12/2004

Author(s)
Mark Graham

Page(s)
49

Source
Professional Roofing / National Roofing Contractors Assn

Keyword(s)
perlite insulation; ASTM c728; blistering

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