Cellulose Or Fiberglass Attic Insulation

This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to.

Cellulose or fiberglass attic insulation. You can get to the same place with either material. Cellulose forms a dense continuous mat of insulation in your attic. 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 across the attic floor such as a strong gust of wind.

Cellulose is more difficult to cheat than fiberglass. Thus creating a more energy efficient home. Cellulose wins last update. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall.

Or 7 inches of cellulose. If fiberglass batts become compressed losing some of their air pockets then this insulation may be more affected by air flow than cellulose which performs well regardless of density. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Cellulose insulates better than fiberglass especially in very cold weather.