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.

Cellulose vs fiberglass insulation. As the temperature difference between the living space and attic increases the r value of blown fiberglass diminishes. Fiberglass fibers may become airborne which can be considered a pollutant. Cellulose insulation is considered a greener material than fiberglass.

With varying locations and building code requirements fiberglass and cellulose insulation can be beneficial for homeowners builders and remodelers. Cellulose is a loose fill product composed of small particles of pulverized paper and cloth treated with a fire retardant. It s blown into the attic and wall spaces under air pressure through hoses. Because it is denser than fiberglass cellulose is much more resistant to wind washing.

Oct 1 2018 cellulose can slow down air flow particularly in walls. Or 7 inches of cellulose. 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.

The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Thus creating a more energy efficient home. More consistent pricing from cellulose manufacturers than fiberglass. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

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. It does not pollute the air during manufacture or use as much energy to produce as fiberglass. It is made from paper that has a minimum of 85 recycled content such as newspaper. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to.

Dirty fiberglass batts have a significantly reduced r value. Compared to fiberglass cellulose is a superb air blocker. Air moving through a vented attic deposits dirt and dust into fiberglass batts. You can get to the same place with either material.

Cellulose resists blowing when installed fiberglass tends to blow around stick to the attic ceiling and drift. 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. Cellulose produces much less static than fiberglass.

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