Closed Cell Spray Insulation R Value Per Inch

Contractors often use it to insulate under slabs ceilings walls and roofs.

Closed cell spray insulation r value per inch. 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. Closed cell spray foams are between 2 and 4 lbs. 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. They sport an r value of 6 0 8 0 per inch of insulation about double their open cell foam counterparts.

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. 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. Just like for open cell foam r values are additive. Comparing fiberglass to foam fiberglass is the less expensive choice for wall insulation and is the.

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 cavity would be r 24 5. Two inches of closed cell foam will provide r12 r14 of insulation. Installing quality insulation is the best thing you can do to improve the energy e closed cell foam r values spray with an r value of 3 5 per inch per inch of thickness. 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 r value of closed cell foam is r 6 5 7 per inch. All these have r values ranging from r 3 2 to r 3 8 per inch.