Polyiso Rigid Insulation R Value Chart

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

Polyiso rigid insulation r value chart. Polyiso has a high r value per inch compared to other insulation products. Rigid foam insulation packs a lot of r value into a thin package but not all rigid foam performs the same. Rigid polyisocyanurate thermal insulation board. I ve written several posts about how to insulation basement walls in which i promote the use of foam board insulation as the first line of defense against moisture and mold.

Excellent lttr value compared to any other fm class 1 rated products of equivalent thickness. Value testing of polyisocyanurate insulation and found r values lower than the current lttr values. Benefits of energyguard polyiso roof insulation include. Polyiso insulation is the best choice as a cost effective energy efficient and environmentally responsible insulation product.

Polyisocyanurate polyiso is a closed cell rigid foam insulation board made with recycled content that is widely used in commercial roofing. 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. As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr. As foam ages over time air and blowing agents diffuse in and out of the foam structure resulting in reduced r value.

Rmax wall insulation r values. There are three basic foam insulation board products on the. 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. Choose rigid insulation wisely and consider the effect its characteristics will have on the performance of the your project overall product cost and the best way to get the bang for your buck.

Foam board insulation types. What is polyiso insulation. 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. Our comprehensive line of high quality polyiso based products continues to deliver maximum r values minimum environmental impact and efficiency in installation cost and design.

Because of this i often get questions about which type of foam board insulation to use and what r values these products provide. R value chart for enerfoil tm rigid foam faced insulation conditioned per atsm c1289 test method astm c518 1 2.