You can even place it under the foundation slab.
Iso rigid insulation r value.
As part of that standard the products must meet r value requirements presented as long term thermal resistance lttr.
Because of this i often get questions about which type of foam board insulation to use and what r values these products provide.
Install it anywhere from the roof to the foundation.
The lttr test is a technically supported more.
See also material data sheet msds 1511 or msds 1911.
The information on this page is based on data considered to be true and accurate based on periodic internal.
Foam board insulation types.
Rigid insulation is one of the best tools to reduce your energy costs.
Select 2 to 4 items to compare.
Rigid foam insulation also known as insulating boards provide high r values.
Get free shipping on qualified iso foam board insulation or buy online pick up in store today in the building materials department.
As foam ages over time air and blowing agents diffuse in and out of the foam structure resulting in reduced r value.
Firestone iso 95 gl insulation the highest thermal ratings.
They keep your home at a comfortable temperature without the need to crank your heat.
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.
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 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.
Rigid polyisocyanurate thermal insulation board.
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.
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.