DENVER, CO--(Marketwire - Oct 9, 2012) - ACH Foam Technologies applauded the decision by the National Roofing Contractors Association (NRCA) to revise the R-value of polyisocyanurate (ISO) insulation.
NRCA has updated their R-value recommendation for polyisocyanurate roof insulation with the publication of the 2011 The NRCA Roofing Manual: Membrane Roof Systems. The new recommendation for R-value ...
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