Soy Spray Foam Insulation R Value Per Inch

However there are open cell spray foam insulation products actually offer r 3 7 per inch such as icynene classic and.

Soy spray foam insulation r value per inch. 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. Eco spray foam insulation. Products with a higher r value provide greater insulation. Open cell foam is impermeable to air and permeable to moisture.

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. Soy based insulation comes in open cell foam and closed cell foam. Insulate rim joists and other large areas with this product meant for big jobs. Rigid foam soy insulation is new on the market as well.

A higher r value prevents more heat from escaping through the insulation. Volga s d touts its soy therm as having a density of 1 2 pound per cubic foot of rigid foam insulation. The r value of spray foam insulation is approximately 6 per inch so those using spray foam as their insulator will need about 6 3 inches of thickness to reach r 38. For example closed cell spray foam depending on brand can offer an r 6 or r 7 per inch.

Closed cell spray foam insulation. Made with plant based products such as soy eco spray foam is more eco friendly. A typical 2 4 stud filled with open cell spray foam will have an r value. Focusing on spray foam insulation materials there is a difference between the two main types.

Homes generally try and reach an r value of 38 with their insulation. The higher the number the better the material insulates. 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. R value measures how a material resists heat transfer.

R value is the term given to thermal resistance to heat flow. All these have r values ranging from r 3 2 to r 3 8 per inch. According to green building advisor. 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.

One manufacturer urethane soy systems co. It has an r value. That means if you used foam it green closed cell which is r 7 per inch it s r value for a 3 5 deep wall. The closed cell spray foam stops air infiltration and provides about an r 5 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. 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. The latter has a higher r value per inch. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13.

The higher the r value of an insulation product the more effective the insulation properties.