
Polyisocyanurate Systems
Paratherm and Paratherm CG consist of a closed-cell polyisocyanurate foam core that is bonded on each side to a fiber-reinforced organic felt facer or a coated fiberglass facer. Paratherm is a high thermal value insulation board used over metal, nailable, and non-nailable roof decks.

Siplast Paratherm—durable polyisocyanurate insulation at a low installed cost
For a detailed overview of Siplast's Paratherm — our rigid roof insulation board comprised of a closed cell polyisocyanurate foam that is core bonded on each side to fiber-reinforced organic felt facer — which provides a high thermal R-value to help you meet building code requirements at a low installed cost, go here.