Open Cell Spray Foam R Value Chart

The r value your insulation needs depends on your local climate.

Open cell spray foam r value chart.

And the department of energy s corresponding climate zone. Just like for open cell foam r values are additive. It has a lower r value per inch than closed cell foam and is vapor permeable. Open cell spray foam r values.

Two inches of closed cell foam will provide r12 r14 of insulation. 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. The r value for open cell is typically around 3 7 at 1 thick and varies by manufacture. Open cell spray foam typically has an r value of 3 5 per inch and it should be noted that open cell does not form a tight air seal.

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. Once you find your home s zone on this map you can use the below insulation r value chart to determine the minimum r value your insulation should have. They sport an r value of 6 0 8 0 per inch of insulation about double their open cell foam counterparts. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13.

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. Closed cell spray foam insulation. The map above shows each region of the u s. 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.

Closed cell spray foams are between 2 and 4 lbs. Use the following chart to estimate an ideal r value for your insulation project. 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. 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.