Closed Cell Spray Foam Insulation R Value Chart

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.

Closed cell spray foam insulation r value chart.

Closed cell spray foams are between 2 and 4 lbs. The r value for closed cell is typically around 6 7 at 1 thick and varies by manufacturer. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13. R value is an important insulation term about measurement.

They sport an r value of 6 0 8 0 per inch of insulation about double their open cell foam counterparts. 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 open cell spray foam r values. Two inches of closed cell foam will provide r12 r14 of insulation.

It measures the effectiveness at stopping energy loss by way of conduction one of the 3 forms of energy transfer. R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and. 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.

As a benchmark one inch of solid wood has an r value of 1. Closed cell foam r6 r8. Just like for open cell foam r values are additive. Use the following chart to estimate an ideal r value for your insulation project.

It has a lower r value per inch than closed cell foam and is vapor permeable. 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.