Closed Cell Spray Foam 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.

Closed cell spray foam r value chart.

It has a lower r value per inch than closed cell foam and is vapor permeable. The r value is r 3 5 to r 3 6 per inch so filling a 2 4 cavity yields about an r 13. Closed cell spray foam insulation. The r value for closed cell is typically around 6 7 at 1 thick and varies by.

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. 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. Closed cell spray foams are between 2 and 4 lbs. Just like for open cell foam r values are additive.

For example closed cell spray foam depending on brand can offer an r 6 or r 7 per inch. For 6 inches r 15 or r 19 etc. Closed cell spray foam r values. Closed cell foam r6 r8.

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. 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. 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. The r value for open cell is typically around 3 7 at 1 thick and varies by manufacture.