Fiberglass Insulation Vs Cellulose Insulation For Attic

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

Fiberglass insulation vs cellulose insulation for attic.

Cellulose wins last update. Cellulose has 38 better air infiltration than fiberglass. Fiberglass batt or roll insulation r3 2. Don t let money fly out of your roof.

Attic insulation keeps the desirable temperature in and the undesirable temperature out. So what are the advantages and disadvantages of each of these. Posted september 19 2019 by lewis insulation filed under attic insulation. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

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 is green cellulose is made of 80 post consumer recycled newsprint. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic. Or 7 inches of cellulose.

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 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. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall.

The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. Dirty fiberglass batts have a significantly reduced r value. Attic insulation contrast compare.

Fiberglass insulation and cellulose insulation offer similar r values. Cellulose insulates better than fiberglass especially in very cold weather. This is called wind washing. 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.

Air moving through a vented attic deposits dirt and dust into fiberglass batts. Thus creating a more energy efficient home. 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 blown in attic r2 2 r4 3.

You can get to the same place with either material. Cellulose is more difficult to cheat than fiberglass.