Fiberglass Insulation Vs Cellulose Insulation For Attic

Fiberglass insulation and cellulose insulation offer similar r values.

Fiberglass insulation vs cellulose insulation for attic.

So what are the advantages and disadvantages of each of these. Cellulose is green cellulose is made of 80 post consumer recycled newsprint. Or 7 inches of cellulose. Air moving through a vented attic deposits dirt and dust into fiberglass batts.

Posted september 19 2019 by lewis insulation filed under attic insulation. Cellulose is more difficult to cheat than fiberglass. Thus creating a more energy efficient home. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic.

This is called wind washing. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to. Because it is denser than fiberglass cellulose is much more resistant to wind washing. Fiberglass insulation blown in attic r2 2 r4 3.

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. When comparing blown in insulation both fiberglass and cellulose are nearly identical in price both costing around 0 70 to 0 80 per square foot for 6 inches of insulation. 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. Fiberglass batt or roll insulation r3 2. Attic insulation contrast compare. 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.

Fiberglass insulation is the easiest insulation product on the market to install and if installed correctly the most effective product on the market for home attic insulation. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Dirty fiberglass batts have a significantly reduced r value. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation.

The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Cellulose has 38 better air infiltration than fiberglass. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall. Don t let money fly out of your roof.

The attic is one of the most essential areas of the home to ensure proper insulation in. Attic insulation keeps the desirable temperature in and the undesirable temperature out.