Spray Foam Insulation Values Per Inch

Eco spray foam insulation.

Spray foam insulation values per inch.

Although spray foam insulation has been in use since the 1940s primarily for aircraft for the past 30 years continual product innovation has seen the increased adoption of spray foam insulation in residential and commercial construction. Open cell spray foams are between 5 and 1 lbs per cubic foot and have an r value of 3 0 4 0 per inch of insulation. Here are the installation methods from lowest to highest average r value per inch. For example closed cell spray foam depending on brand can offer an r 6 or r 7 per inch.

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. Radiant barriers and vapor barriers are not rated by. The average cost to have spray foam professionally installed is about 2 400 for a 1 600 sq. Foam board insulation.

Price varies on r value required and amount of sq footage being sprayed. Open cell spray foam which is usually 1 00 to 1 20 per square foot and closed cell spray foam which is about 1 25 to 1 50 per square foot 1 by 12 x 12 area of coverage. Why spray foam insulation is so effective in meeting code requirements is that it has a higher r value per inch of product used than batts. Insulate rim joists and other large areas with this product meant for big jobs.

Blown in or loose fill insulation. Open cell foam insulation values r3 r4. The rapid growth of sprayed foam insulation in building construction thanks in part to its immediate and long term. Welcome to g m c spray foam insulation 509 720 9954.

More inches applied will give you a higher r value. 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. Spray foam is available in two different types. Closed cell spray foam insulation.

The closed cell spray foam stops air infiltration and provides about an r 5 per inch. R value is a critical part when comparing spray foam to other types of insulation. Home if you need 3 inches of foam depth the price above would. Made with plant based products such as soy eco spray foam is more eco friendly.

Spray foam insulation r value. You will have an option of closed cell r value of 6 7 per inch or open cell r value 3 7 per inch. The insulation is blown into the wall or attic one layer 1 at a time. R values are additive so you can multiple the number of inches of insulation thickness times the r value to arrive at a total insulation value.

Note that the material the insulation is made from will change the r value as well. 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. Products with a higher r value provide greater insulation. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13.