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PIMA announces implementation of new long-term thermal resistance R-value

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Abstract
For years, roofing contractors have indicated a strong interest in the long-term thermal resistance of polyurethane and polyisocyanurate foam insulation. This year, PIMA manufacturers introduced LTTR.
Date
8/2002
Author(s)
Jared Blum
Page(s)
32-35
Source
Roofing Contractor / Business News Publishing Co.
Keyword(s)
PIMA; long term thermal resistance; LTTR; polyisocyanurate; polyurethane; foam insulation

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