Fibreglass Vs Cellulose Attic Insulation

This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic.

Fibreglass vs cellulose attic insulation.

Cellulose is more difficult to cheat than fiberglass. Or 7 inches of cellulose. Cellulose has 38 better air infiltration than fiberglass. Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation.

This is called wind washing. Because it is denser than fiberglass cellulose is much more resistant to wind washing. 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. Fiberglass batt or roll insulation r3 2. You can get to the same place with either material. Batt insulation take time to read this column.

Cellulose and fiberglass have similar insulating values. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Thus creating a more energy efficient home. Cellulose and fiberglass are the two most popular types of blown insulation and they each have some pros and cons.

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. 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.

Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass. Cellulose insulates better than fiberglass especially in very cold weather. Cellulose wins last update. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall.

Here are some details on the differences between these kinds of insulation. Fiberglass insulation and cellulose insulation offer similar r values. Fiberglass insulation blown in attic r2 2 r4 3. 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.

Batt insulation is available at home centers and lumberyards. 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. So what are the advantages and disadvantages of each of these.