Attic Insulation Fiberglass Vs Cellulose

So what are the advantages and disadvantages of each of these.

Attic insulation fiberglass vs cellulose.

Batt insulation take time to read this column. Blown in insulation requires a professional. Cellulose is more difficult to cheat than fiberglass. Or 7 inches of cellulose.

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. Thus creating a more energy efficient home. Batt insulation is available at home centers and lumberyards. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic.

Before choosing blown vs. Fiberglass batt or roll insulation r3 2. Cellulose insulates better than fiberglass especially in very cold weather. Check out our many resources below.

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. Understanding what you are putting into your home is important to you as a homeowner a parent and an individual and its important to us that you know the facts. Cellulose wins last update. Cellulose forms a dense continuous mat of insulation in your attic.

Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. 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. You can get to the same place with either material. 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. Dirty fiberglass batts have a significantly reduced r value. Air moving through a vented attic deposits dirt and dust into fiberglass batts. Compared to fiberglass cellulose is a superb air blocker.

Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass. We have written many articles on the different types of insulation. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to.

This is called wind washing. Fiberglass insulation blown in attic r2 2 r4 3. Fiberglass insulation and cellulose insulation offer similar r values.