Polyisocyanurate Roof Insulation R Value Per Inch

Let s use the r value of iko s polyiso insulation enerfoil tm as an example.

Polyisocyanurate roof insulation r value per inch.

R 6 polyisocyanurate rigid foam insulation board. Rmax thermasheath 3 2 in. As a reasonable estimate of the actual thermal performance of polyisocyanurate insulation over the lifespan of a roof assembly. Membrane roof systems 2011 and the nrca roofing manual.

Jm is proud to be a pima member and have its product third party certified under the pima quality mark program. Polyiso still remains the highest r value per inch of any available insulation. Benefits of energyguard polyiso roof insulation include. Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness.

R5 radiant acoustic insulation kit stc 19 5 piece price. R value per inch comparison polyiso offers a r 6 5 and the highest r value per inch when compared to other insulation. Jm suggests that design professionals use 5 7 r inch as a design specification for its foam products. Membrane roof systems 2015 nrca had recommended designers use in service r values of 5 0 per inch thickness in predominant.

Since 1987 the national roofing contractor s association nrca has recommended designers use r 5 6 in. In the nrca roofing manual. Because it s highly energy efficient with the highest r value ratings per inch the use of iso 95 gl insulation in a firestone roofing system provides a cost effective solution for today s oof design r challenges and is preferred for any and every roofing system. This allows polyiso products to deliver more energy savings potential for buildings than other materials of the same thickness.

Dated its r value recommendations for polyisocyanurate insulation used in roof systems. Firestone iso 95 gl insulation the highest thermal ratings. 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. Polyiso has a high r value per inch when compared to other insulation products see chart below.

Polyiso has a high r value per inch compared to other insulation products. R 13 1 polyisocyanurate rigid foam insulation board. Rmax thermasheath 3 1 in. Jm revised lttr values.