Fibreglass Vs Cellulose Attic Insulation

This is called wind washing.

Fibreglass vs cellulose attic insulation. So what are the advantages and disadvantages of each of these. Cellulose forms a dense continuous mat of insulation in your attic. Cellulose wins last update. Cellulose and fiberglass are the two most popular types of blown insulation and they each have some pros and cons.

This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to. 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. Before choosing blown vs. Dirty fiberglass batts have a significantly reduced r value.

Cellulose is green cellulose is made of 80 post consumer recycled newsprint. Batt insulation take time to read this column. Because it is denser than fiberglass cellulose is much more resistant to wind washing. You can get to the same place with either material.

Fiberglass insulation blown in attic r2 2 r4 3. Cellulose and fiberglass have similar insulating values. Batt insulation is available at home centers and lumberyards. Air moving through a vented attic deposits dirt and dust into fiberglass batts.

Cellulose has 38 better air infiltration than fiberglass. Fiberglass batt or roll insulation r3 2. 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.

Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation. 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. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall.

Cellulose insulates better than fiberglass especially in very cold weather. Here are some details on the differences between these kinds of insulation. 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. Fiberglass insulation and cellulose insulation offer similar r values.

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. Blown in insulation requires a professional. Thus creating a more energy efficient home.