Polyiso Rigid Insulation R Value

Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness.

Polyiso rigid insulation r value.

Rigid polyisocyanurate thermal insulation board. Some products have reinforced facing to make them sturdier. Choose this option for areas that need a good amount of strength and water resistance. 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.

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. R value chart for enerfoil tm rigid foam faced insulation. Polyiso rigid insulation r value chart. Conditioned per atsm c1289 test method astm c518 1 2.

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 insulation board made with recycled content that is widely used in commercial roofing. It provides about r 5 per inch. Polyiso insulation is the best choice as a cost effective energy efficient and environmentally responsible insulation product.

The results also are somewhat lower than the results at 25 f 40 f 75 f and 110 f mean test tem peratures from nrca s 2009 testing. This material offers the highest r values about r 6 to 6 5. Written by kupis on may 7 2020 in chart. Updated recommendations although the lttr method for determining and reporting the.

Value testing of polyisocyanurate insulation and found r values lower than the current lttr values. Rigid insulation r value per inch chart hoskin. For the united states market the applicable standard is astm c1289 standard specification for faced rigid cellular polyisocyanurate thermal insulation board. As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr.

The requirements for measuring and reporting thermal resistance as well as minimum r values for polyiso products are described in two relevant product standards. R value chart caflei closed cell and open insulation r values in pir roof insulation embly 5 interior insulated cmu wall gm 0702 to insulating sheathing. As foam ages over time air and blowing agents diffuse in and out of the foam structure resulting in reduced r value. Benefits of energyguard polyiso roof insulation include.

What is polyiso insulation. Thickness inches r value in i p imperial rsi r value in metric 0 5. Let s use the r value of iko s polyiso insulation enerfoil tm as an example.