Closed Cell Spray Insulation R Value Per Inch

Spray polyurethane foam spf is better than any other type of insulation at reducing air leakage.

Closed cell spray insulation r value per inch.

With foamed in place insulation it is relatively easy though not inexpensive to fill wall and ceiling cavities completely. 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.

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

The r value of closed cell foam is r 6 5 7 per inch. 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. 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.

All these have r values ranging from r 3 2 to r 3 8 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.