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Polyiso recommendations

Abstract
In the U.S., various types, classes and grades of rigid board, faced, polyisocyanurate insulation are used as components of low-slope roof systems. The NRCA Roofing Manual: Membrane Roof Systems—2015 provides NRCA’s best practice guidelines for using specific polyisocyanurate insulation products in membrane roof systems. Following is an overview of some of these guidelines.
Date
3/2017
Author(s)
Mark Graham
Page(s)
12
Source
Professional Roofing / National Roofing Contractors Assn
Keyword(s)
ASTM C 1289; R-value; application-specific guidance.

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