Spray Foam Insulation Vs Blown Insulation

Spray foam insulation is an air barrier material that creates a seal against air movement.

Spray foam insulation vs blown insulation.

While blown in insulation is generally made from some kind of fibrous material such as cellulose fiberglass or mineral wool spray foam insulation like icynene is made from spray polyurethane foam. If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary. Fiberglass insulation is significantly cheaper than spray foam insulation but it is also less effective especially in extremely cold conditions. It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.

The big disadvantage with spray foam is cost. It s hard to perfectly install fiberglass and cellulose. Considering diy blown fiberglass insulation vs spray foam both require care to get the thickness right. In general spray foam insulation will cost more than blown in blanket wall insulation with loose fill attic insulation r 40 as a standard.

Any spaces and gaps that aren t filled can equate to the size of a basketball with enough air leakage everyday to fill two air blimps. I d blow insulation on the attic floor after air sealing of course. Spray foam insulation s main ingredients are water blown and organic chemical compounds derived from petroleum. So the following is a list of their various key features along with strengths and drawbacks to help you better understand which method will benefit you.

Used in roughly 85 of american homes fiberglass insulation is the most common form of home insulation. The attic roofline is typically insulated with 5 nominal fill foam resulting in an r value close to 20. In most home markets this type of insulation is considered an added home value that will pay. Depending on the region and market spray foam insulation can sell for 1 30 to 3 50 per square foot.

Open cell spray foam insulation can expand up to 100 times its original size to fill every nook and cranny in the cavity where it is applied. Blown in insulation vs spray foam there are various methods of insulating your house among which blown in and spray foam techniques are more common and known to be effective. Icynene spray foam because of its specific type of material is able to create an effective air barrier wherever it is applied. Fiberglass insulation vs spray foam insulation comparison.

It costs 1 25 to 3 50 per square foot to install spray foam insulation into your walls ceiling and attic. Of course it costs more. For the average 2 400 square foot home it will cost 3 000 to 8 400 to do the.