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NRCA recommends R 5.6 design for polyiso

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Abstract
NRCA will continue to recommend that contractors use a design R-value of 5.6 for polyisocyanurate roof insulations, according to Don Guthrie, president of Wayne's Roofing Inc., and a member of NRCA's Technical Operations Committee.
Date
2/2003
Author(s)
Michael Russo
Page(s)
3
Keyword(s)
polyisocyanurate insulation; R value; foam insulation;


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