Cellulose Or Fiberglass In Attic

Or 7 inches of cellulose.

Cellulose or fiberglass in attic.

Cellulose vs fiberglass insulation. 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. 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. It is made from paper that has a minimum of 85 recycled content such as newspaper.

Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass. It does not pollute the air during manufacture or use as much energy to produce as fiberglass. You can get to the same place with either material. Oct 1 2018 cellulose can slow down air flow particularly in walls.

Dirty fiberglass batts have a significantly reduced r value. Cellulose insulation is considered a greener material than fiberglass. Cellulose is a loose fill product composed of small particles of pulverized paper and cloth treated with a fire retardant. Thus creating a more energy efficient home.

With varying locations and building code requirements fiberglass and cellulose insulation can be beneficial for homeowners builders and remodelers. Because it is denser than fiberglass cellulose is much more resistant to wind washing. Cellulose produces much less static than fiberglass. Once installed in the attic cellulose loose fill insulation looks like mounds of freshly fallen snow covering the attic floor.

Compared to fiberglass cellulose is a superb air blocker. 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. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. It s blown into the attic and wall spaces under air pressure through hoses.

Local source provides consistent deliveries. Fiberglass fibers may become airborne which can be considered a pollutant. More consistent pricing from cellulose manufacturers than fiberglass. The two insulations have successfully improved energy efficiency in homes over the years.

Loose fill blown fiberglass insulation has another slight problem. This is called wind washing. Cellulose resists blowing when installed fiberglass tends to blow around stick to the attic ceiling and drift. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass.

Air moving through a vented attic deposits dirt and dust into fiberglass batts.