Testing R-values

Abstract
In late 2014, NRCA conducted limited R-value testing of polyisocyanurate insulation products. The test results show R-values lower than the product manufacturers’ published long-term thermal resistance (LTTR) values.

Date
3/2015

Author(s)
Mark Graham

Page(s)
14

Source
Professional Roofing / National Roofing Contractors Assn

Keyword(s)
Polyisocyanurate; r-value; long-term thermal resistance; lttr; test; results

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