Polyiso Insulation R Value Per Inch

Polyiso has a high r value per inch compared to other insulation products.

Polyiso insulation r value per inch.

It has one of the highest r values per inch of thickness among common insulations. A true environmental winner polyiso is a good choice for leadership in energy and environmental design leed credits. 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. For example a two inch polyiso product has more than twice the insulating value than a one inch product.

Polyiso insulation is the best choice as a cost effective energy efficient and environmentally responsible insulation product. Keep in mind that polyiso s r value increases with thickness. Jm is proud to be a pima member and have its product third party certified under the pima quality mark program. Silverboard acoustic rigid foam insulation is a high silverboard acoustic rigid foam insulation is a high performance flat sheet insulation material made from expanded polystyrene eps which is coated with a layer of reflective film laminated on both sides.

A high r value per inch compared to other insulation products used in commercial and residential construction. Let s use the r value of iko s polyiso insulation enerfoil tm as an example. R value chart for enerfoil tm rigid foam faced insulation conditioned per atsm c1289 test method astm c518 1 2. Polyiso has the highest r value per inch of any rigid board insulation.

This month nrca has revised and updated its recommen. An exclusive third party thermal performance certification. 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. Polyiso still remains the highest r value per inch of any available insulation.

In service r values of 5 0 per inch thickness in predominant. Building science corporation bsc and others have been examining this difference. Polyiso s unique benefits include highest r value per inch. Of polyisocyanurate insulation used in roof systems.

With the publication of this interim update nrca has revised its design in service r value rec ommendation to 5 0 per inch thickness in all climate conditions. 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. This highly effective combination of materials offers a higher r value per inch compared to traditional flat sheet rigid foam insulation. However labeled r value differs from in service r value for many insulations.