Polyisocyanurate Insulation R Value

A higher r value means that the insulation will do a better job of holding in conditioned air whether that s heat in the winter or cool air in the summer.

Polyisocyanurate insulation r value.

As foam ages over time air and blowing agents diffuse in and out of the foam structure resulting in reduced r value. Fm approved subject to the conditions of approval as a roof insulation when installed as shown in the current edition of the factory mutual research approvals guide. Polyisocyanurate polyiso is a closed cell rigid foam board insulation that is bonded to facers on both sides which are composed of various organic and inorganic materials. Rigid polyisocyanurate thermal insulation board.

Polyiso is used in roof wall ceiling and specialty applications within commercial and residential buildings of all types. Polyiso is unique in that the r value increases with the thickness of the foam so three inches of polyiso has a higher r value per inch than two inches. Understanding r value thursday december 13 2018 what does r value mean. Benefits of energyguard polyiso roof insulation include.

And nrca s r value recommendations associated with the use of polyisocyanurate insulation used in roof systems. Polyiso insulation thickness r value chart. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. Polyiso has a high r value per inch compared to other insulation products.