Polyiso Insulation R Value Per Inch

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.

Polyiso insulation r value per inch.

Does not melt when exposed to flame versus other types of rigid foam board astm e84 the low permeability of foil facing coupled with polyiso s high thermal performance make it ideal for controlling condensation in walls. A high r value per inch compared to other insulation products used in commercial and residential construction. R value chart for enerfoil tm rigid foam faced insulation conditioned per atsm c1289 test method astm c518 1 2. Polyiso s unique benefits include highest r value per inch.

Polyisocyanurate insulation is a common commercial and residential roof and wall insulation. Outstanding installed cost advantages and economical cost per r value. The increase in thermal resistance for thicker products is due to the reduced contribution of more thermally conductive elements such as the facer and the denser cell. This highly effective combination of materials offers a higher r value per inch compared to traditional flat sheet rigid foam insulation.

For example a two inch polyiso product has more than twice the insulating value than a one inch product. Keep in mind that polyiso s r value increases with thickness. Polyiso still remains the highest r value per inch of any available insulation. Jm is proud to be a pima member and have its product third party certified under the pima quality mark program.

An exclusive third party thermal performance certification. Building science corporation bsc and others have been examining this difference. This month nrca has revised and updated its recommen. Polyiso has a high r value per inch compared to other insulation products.

In service r values of 5 0 per inch thickness in predominant. Of polyisocyanurate insulation used in roof systems. However labeled r value differs from in service r value for many insulations. It has one of the highest r values per inch of thickness among common insulations.

Polyiso insulation is the best choice as a cost effective energy efficient and environmentally responsible insulation product. A true environmental winner polyiso is a good choice for leadership in energy and environmental design leed credits. And the change in lttr values effective january 1 2014. Let s use the r value of iko s polyiso insulation enerfoil tm as an example.