Cellulose Or Fiberglass In Attic

When used in an attic space however both types of insulation are ineffective at air flow fiberglass batts can be found jammed into floor attic maine cellulose is a great product because it goes everywhere you want the insulation to be.

Cellulose or fiberglass in attic.

Or 7 inches of cellulose. Once it has settled fiberglass has an r value of 2 1 2 7 per inch while cellulose has an r value of approximately 3 0 per inch. Cellulose is a loose fill product composed of small particles of pulverized paper and cloth treated with a fire retardant. Air moving through a vented attic deposits dirt and dust into fiberglass batts.

Both cellulose and fiberglass are two most commonly used insulations. More consistent pricing from cellulose manufacturers than fiberglass. Because it is denser than fiberglass cellulose is much more resistant to wind washing. The two insulations have successfully improved energy efficiency in homes over the years.

Thus creating a more energy efficient home. It is made from paper that has a minimum of 85 recycled content such as newspaper. Compared to fiberglass cellulose is a superb air blocker. Cellulose vs fiberglass insulation.

Cellulose insulation is considered a greener material than fiberglass. Fiberglass fibers may become airborne which can be considered a pollutant. With varying locations and building code requirements fiberglass and cellulose insulation can be beneficial for homeowners builders and remodelers. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

Cellulose resists blowing when installed fiberglass tends to blow around stick to the attic ceiling and drift. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. This is called wind washing. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to.

It s blown into the attic and wall spaces under air pressure through hoses. Once installed in the attic cellulose loose fill insulation looks like mounds of freshly fallen snow covering the attic floor. Loose fill blown fiberglass insulation has another slight problem. It does not pollute the air during manufacture or use as much energy to produce as fiberglass.

Dirty fiberglass batts have a significantly reduced r value. Cellulose produces much less static than fiberglass. You can get to the same place with either material. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass.

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.