When it comes to insulation boards for vegetated roofs, there are several choices available but polyisocyanurate (also known as polyiso) continues to lead the way, according to the 2015-16 market ...
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.
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