Best Fiberglass Insulation For Attic

If you check with the cellulose insulation manufacturers association they ll assure you that cellulose is definitely your best choice for insulation.

Best fiberglass insulation for attic.

Some installations can yield a higher r value than traditional batt insulation for the same thickness and can fill even the smallest cavities creating an effective air barrier. The big disadvantage with spray foam is cost. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Loose fill fiberglass seems to dominate attic insulation in new construction homes and has an r value of approximately 2 5 per inch.

There are other materials and systems that you can use to insulate your attic. The type of insulation you need depends on which type is currently installed and the required r value. Both can be added to uninsulated attics or layered over existing material. Blown fiberglass attic insulation loses half its r value because of convective loops.

Proper attic insulation is the best way to prevent heat loss in the winter and retain cool air in the summer. Find your zone on the map and then use the chart to determine the level of insulation you need to properly insulate your attic walls floors and crawlspaces. So it s time to pay close attention to what s happening up there. Achieving greater r values in attics the higher the r value the better the thermal performance of the insulation.

Insulation types include loose fill batts rolls foam board spray board and vapor barriers. The most common insulation materials are fiberglass cellulose and foam. Rolls and batts are produced of mineral wool and fiberglass. I d blow insulation on the attic floor after air sealing of course.

Among commonly used types of insulation there are mineral wool or fiberglass rolls and batts rigid fiberglass board loose fill materials cellulose mineral wool etc. Yes there was a study from the early 1990s that showed blown fiberglass in attics could lose 50 of its r value when the attic temperature dropped. For diy attic insulation you ve got two choices. Foam in place insulation can be blown into walls on attic surfaces or under floors to insulate and reduce air leakage.

It s generally 3 to 4 times what you ll pay for blown cellulose or fiberglass. Modern technology of blanket insulation today is considered the best insulation for attic. Pros and cons of loose fill fiberglass attic insulation. I heard this one for many years before i finally wrote about it.