As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr.
Iso rigid insulation r value.
Install it anywhere from the roof to the foundation.
You can even place it under the foundation slab.
Get free shipping on qualified iso foam board insulation or buy online pick up in store today in the building materials department.
Because of this i often get questions about which type of foam board insulation to use and what r values these products provide.
See also material data sheet msds 1511 or msds 1911.
The lttr test is a technically supported more.
Rigid insulation is one of the best tools to reduce your energy costs.
The information on this page is based on data considered to be true and accurate based on periodic internal.
Rigid foam insulation also known as insulating boards provide high r values.
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.
R 3 2 polyisocyanurate rigid foam insulation board model 754404 13 82 13 82.
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.
As foam ages over time air and blowing agents diffuse in and out of the foam structure resulting in reduced r value.
2 stated thermal resistance values are based upon conditioning requirements and test methodology found in astm c1289 and astm c518 for foil faced polyisocyanurate insulation.
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.
Select 2 to 4 items to compare.
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.
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.
There are three basic foam insulation board products on the.
Rigid polyisocyanurate thermal insulation board.
1 when joints penetrations detailed appropriately.