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 open cell spray foam r values. It measures the effectiveness at stopping energy loss by way of conduction one of the 3 forms of energy transfer. Just like for open cell foam r values are additive. The common denominator among varieties of insulation is the r value.

It has a lower r value per inch than closed cell foam and is vapor permeable. R value is an important insulation term about measurement. As a benchmark one inch of solid wood has an r value of 1. Two inches of closed cell foam will provide r12 r14 of insulation.

In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and. 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. They sport an r value of 6 0 8 0 per inch of insulation about double their open cell foam counterparts.

Closed cell spray foams are between 2 and 4 lbs. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13. Use the following chart to estimate an ideal r value for your insulation project. 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.

R value is a measurement of thermal resistance and measures the ability of heat to transfer from one side of an object to another. Closed cell foam r6 r8.