The big disadvantage with spray foam is cost.
Which insulation is best for attics.
Spray foam attic insulation.
Choose from two types.
They sport insulation values of approximately r 6 5 and r 3 6 per inch respectively.
Modern technology of blanket insulation today is considered the best insulation for attic.
Both can be added to uninsulated attics or layered over existing material.
Rolls and batts are produced of mineral wool and fiberglass.
Loose fill or batt the common term for blanket insulation.
Once you ve decided which type is best for you examine the material options and prices to home in on the right product.
It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass.
For diy attic insulation you ve got two choices.
Closed cell and open cell aka 2 pound and pound respectively.
The majority of homes in california for example require r 38 insulation in the.
Spray foam offers the best attic insulation performance available.
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.
Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer.