Attic Cellulose Insulation Vs Fiberglass

Cellulose insulates better than fiberglass especially in very cold weather.

Attic cellulose insulation vs fiberglass.

Fiberglass insulation blown in attic r2 2 r4 3. Cellulose forms a dense continuous mat of insulation in your attic. When using cellulose blown in dry insulation it requires a machine to achieve its purpose and a training session from wherever you rent the blower from. Cellulose has 38 better air infiltration than fiberglass.

Air moving through a vented attic deposits dirt and dust into fiberglass batts. You can get to the same place with either material. 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. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic.

Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Or 7 inches of cellulose. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

Batt insulation is available at home centers and lumberyards. Batt insulation take time to read this column. Before choosing blown vs. Thus creating a more energy efficient home.

Cellulose is more difficult to cheat than fiberglass. Dirty fiberglass batts have a significantly reduced r value. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to. So what are the advantages and disadvantages of each of these.

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. Cellulose wins last update. This is called wind washing. Fiberglass insulation and cellulose insulation offer similar r values.

Compared to fiberglass cellulose is a superb air blocker. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall. 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. Blown in insulation requires a professional.

Both cellulose and fiberglass insulation provide about the same level of insulating power or r value per inch with slightly different results based on the installation procedure. Because it is denser than fiberglass cellulose is much more resistant to wind washing.