Open Cell Spray Foam R Value Chart

The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13.

Open cell spray foam r value chart.

Open cell spray foam has an r value of about r 3 7 per inch while closed cell spray foam has an r value that may be as high as r 6 5 per inch. If you want to install spray foam in a stud wall and price is no object then it would seem to make sense to specify closed cell spray foam right. Open cell spray foam r values. Why r value is not as critical you paring insulation types insulation r value chart marine grade foam sheets closed cellwhat is the highest r value insulation ratings types chartsclosed cell spray foam iowaopen cell spray foam iowatiger foam spray insulation r value chartremodeling an insulation r value chart is only the firstopen cell vs read more.

Just like for open cell foam r values are additive. Use the following chart to estimate an ideal r value for your insulation project. The r value your insulation needs depends on your local climate. It performs much better than any form of batt for stopping air flow but it is not as complete of an air seal as closed cell spray foam.

Two inches of closed cell foam will provide r12 r14 of insulation. As always should you have any questions or require any assistance in planning your spray foam insulation job please contact us we are always happy to help. Closed cell spray foam insulation is vapor and air impermeable and is applied with a minimum of 2 on average with use on on interior and exterior building applications. The r value for open cell is typically around 3 7 at 1 thick and varies by manufacture.

Both closed cell spray foam and open cell spray foam insulation can be used effectively in commercial building designs to allow the building to achieve energy efficiency and consistent performance. Closed cell spray foam has a far better r value per inch than other less effective insulations like cellulose fiberglass or even open cell foam. They sport an r value of 6 0 8 0 per inch of insulation about double their open cell foam counterparts. The map above shows each region of the u s.

It has a lower r value per inch than closed cell foam and is vapor permeable. When applied on the interior open cell spray insulation provides performance advantages that differ from those of closed cell spray foam used on the exterior. Closed cell spray foam insulation. And the department of energy s corresponding climate zone.