How Much Closed Cell Foam In Attic

Floor air seal closed cell 1 75 lb.

How much closed cell foam in attic.

The myth that open cell is more economical is bullshit. Cost to install spray foam insulation varies greatly by region and even by zip code. Roof top side flat roof closed cell 2 5 lb. Get free estimates from insulation contractors in your city.

Closed cell spray foam r values. But anything over r60 is probably overkill and not cost effective if using closed cell foam only 10 worth if done in open cell foam you could get to code minimum with there with 11 and with another 5 6 of blown fiberglass for igintion barrier you d be at r60. 3 inch closed cell spray foam insulation get local cost. Intumescent coatings are not always needed to coat spray foam in the attic in order to meet code thermal barrier requirements.

Roof attic side open cell open cell 0 75 lb. Open cell foam weighs 1 2 pound per cubic foot and closed cell weighs 2 lbs per cubic foot. Enter your information into the spray foam insulation estimate calculator to determine how much foam you need for your project. 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.

Invalid zip code find yours. For an average 2 200 square foot home open cell foam insulation costs 1 254 for the minimum 1 5 thickness and 2 926 to spray the maximum 3 5 thickness on average while a closed cell foam installation costs 6 776. The atlanta summer time attic is 130 140 degrees and i ve seen higher temperatures in tight restricted attics under certain conditions. Closed cell 1 75 lb.

However when we seal and insulate your attic deck using lapolla odorless open cell spray foam you re protecting that attic from tortuous high temperatures. There is 300 difference there but the cost they give you is about a third difference and open cell foam at 12 inches will not give you the performance of 2 inches of closed. 2 inch open cell spray foam insulation high. Open cell foam installed 2 inches deep typically has a perm rating of around 15 while closed cell foam typically has a perm rating around 1 perm for the same depth.

For example closed cell spray foam depending on brand can offer an r 6 or r 7 per inch. Since closed cell foam has a higher r value per inch installers generally spray 2 in walls and 3 in rooflines to meet the energy code requirements of r 13 and r 19 respectively.