Is Rigid Cellular Polyisocyanurate Foam Core the same as Urethane Core?

Polyisocyanurate foam (polyiso) is modified polyurethane foam but offers greater dimensional stability over a wider service temperature range.

Polyisocyanurate foam is specifically formulated to provide excellent physical properties without the use of chlorofluorocarbon (CFC) or hydrochlorofluorocarbon (HCFC) blowing agents and is in compliance with the Montreal Protocol and the Clean Air Act.



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