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Closed-cell Spray Polyurethane Foam

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Abstract
CLOSED-CELL SPRAY POLYURETHANE FOAM (ccSPF) INSULATION IS USED IN EXTERIOR ROOF AND WALL ASSEMBLIES TO EFFECTIVELY COMBINE AIRNAPOR/THERMAL BARRIER AND SOMETIMES WEATHER BARRIER (FIGURE L PAGE 10). A CRIT1C.AL ASPECT OF CCSPF IS IT CAN UNDERGO POST­INSTALLATION DIMENSIONAL CHANGES THAT ARE PROBLEMATIC WHEN THEY RESULT IN BREACHES OF THE INTENDED BARRIERS. THIS ARTICLE DISCUSSES CONDITIONS THAT LEAD TO CCSPF SHRINKAGE AND SEPARATION FROM SUBSTRATES AND STRATEGIES TO MITIGATE THEM.
Date
2/2025
Author(s)
Rachel Lynde, Niklas Vigener, Spencer Simis
Page(s)
8-13
Keyword(s)
installation; roof; assembly; code


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