Closed Cell Spray Foam Insulation R Value Chart

In comparison an inch of blown fiberglass insulation has an r value of 3 1 3 4 and.

Closed cell spray foam insulation 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. They sport an r value of 6 0 8 0 per inch of insulation about double their open cell foam counterparts. It measures the effectiveness at stopping energy loss by way of conduction one of the 3 forms of energy transfer. R value is an important insulation term about measurement.

As a benchmark one inch of solid wood has an r value of 1. 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. Most spray polyurethane foam is called two component foam. 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. 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. 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 spray foam provides a higher r value per inch 6 5 than less expensive insulation types like cellulose and fiberglass 3 5 to 3 7.

The closed cell spray foam stops air infiltration and provides about an r 5 per inch. Closed cell foam r6 r8. With foamed in place insulation it is relatively easy though not inexpensive to fill wall and ceiling cavities completely. Use the following chart to estimate an ideal r value for your insulation project.

Two inches of closed cell foam will provide r12 r14 of insulation. Insulate rim joists and other large areas with this product meant for big jobs. 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. It has a lower r value per inch than closed cell foam and is vapor permeable.

The r value for closed cell is typically around 6 7 at 1 thick and varies by manufacturer. 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. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13. 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.

Products with a higher r value provide greater insulation. Closed cell spray foam insulation. Made with plant based products such as soy eco spray foam is more eco friendly. Just like for open cell foam r values are additive.