Attic Insulation Vs Cellulose

Don t let money fly out of your roof.

Attic insulation vs cellulose.

Cellulose wins last update. Cellulose insulates better than fiberglass especially in very cold weather. Cellulose can slow down air flow particularly in walls. When a paper based cellulose mix is utilized by builders it is treated with something called boric acid to give it fire resistance properties.

This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass. You can get to the same place with either material. As an asbestos alternative cellulose insulation is made from many different materials including cardboard hemp straw newspaper and many other different materials.

Cellulose forms a dense continuous mat of insulation in your attic. When used in an attic space however both types of insulation are ineffective at air flow across the attic floor such as a strong gust of wind. Assuming your current attic insulation is made from fiberglass and has a value of r 13 you d have to add roughly 10 inches of additional fiberglass to hit r 38. Posted september 19 2019 by lewis insulation filed under attic insulation.

The air trapped in the pockets of the insulation is part of what insulates your home. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Or 7 inches of cellulose. Wet insulation of any type is bad.

Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. This prevents liquid from accumulating in any one area. Attic insulation contrast compare.

Attic insulation keeps the desirable temperature in and the undesirable temperature out. But cellulose is hygroscopic meaning any moisture it encounters is dispersed throughout the material. Cellulose is more difficult to cheat than fiberglass. Cellulose can help dry out other materials in contact with it and does not support mold growth.