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.

Spray foam insulation values per inch.

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. Foam board insulation. Blown in or loose fill insulation. Home if you need 3 inches of foam depth the price above would.

Insulate rim joists and other large areas with this product meant for big jobs. Spray foam is available in two different types. Note that the material the insulation is made from will change the r value as well. Price varies on r value required and amount of sq footage being sprayed.

R value is a critical part when comparing spray foam to other types of insulation. 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. 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.

Products with a higher r value provide greater insulation. For example closed cell spray foam depending on brand can offer an r 6 or r 7 per inch. 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. The closed cell spray foam stops air infiltration and provides about an r 5 per inch.

Open cell has an r value of 3 7 and closed cell has an r value of 6 5 based per inch of installed spray foam. Radiant barriers and vapor barriers are not rated by. Welcome to g m c spray foam insulation 509 720 9954. The average cost to have spray foam professionally installed is about 2 400 for a 1 600 sq.

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. Insulation blankets batts and rolls spray foam 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. More inches applied will give you a higher r value.

It has a lower r value per inch than closed cell foam and is vapor permeable. 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. The insulation is blown into the wall or attic one layer 1 at a time. You will have an option of closed cell r value of 6 7 per inch or open cell r value 3 7 per inch.

Closed cell spray foam insulation. Here are the installation methods from lowest to highest average r value per inch. Spray foam insulation 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.