The big disadvantage with spray foam is cost.
Spray foam insulation vs blown insulation.
Spray foam expands up to 100 times its original size to fill every corner of your home s envelope for thermal insulation and air sealing.
Fiberglass insulation is significantly cheaper than spray foam insulation but it is also less effective especially in extremely cold conditions.
Fiberglass insulation vs spray foam insulation comparison.
In general spray foam insulation will cost more than blown in blanket wall insulation with loose fill attic insulation r 40 as a standard.
Spray foam insulation is an air barrier material that creates a seal against air movement.
The attic roofline is typically insulated with 5 nominal fill foam resulting in an r value close to 20.
Of course it costs more.
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.
For the average 2 400 square foot home it will cost 3 000 to 8 400 to do the.
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.
Used in roughly 85 of american homes fiberglass insulation is the most common form of home insulation.
Depending on the region and market spray foam insulation can sell for 1 30 to 3 50 per square foot.
If you don t have hvac and ducts in the attic spray foam on the roofline isn t really necessary.
I d blow insulation on the attic floor after air sealing of course.
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.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
It s hard to perfectly install fiberglass and cellulose.
In most home markets this type of insulation is considered an added home value that will pay.
Spray foam insulation s main ingredients are water blown and organic chemical compounds derived from petroleum.
Icynene spray foam because of its specific type of material is able to create an effective air barrier wherever it is applied.
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.
Spray foam insulation prices spray foam insulation is the new thing in insulation and is going to be the future of insulating homes.
Considering diy blown fiberglass insulation vs spray foam both require care to get the thickness right.