Attic Insulation Fiberglass Vs Cellulose

Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

Attic insulation fiberglass vs cellulose.

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. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Fiberglass batt or roll insulation r3 2.

We have written many articles on the different types of insulation. Air moving through a vented attic deposits dirt and dust into fiberglass batts. Check out our many resources below. 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 wins last update. So what are the advantages and disadvantages of each of these. Batt insulation is available at home centers and lumberyards.

Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. Thus creating a more energy efficient home. 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. This is called wind washing.

Batt insulation take time to read this column. Because it is denser than fiberglass cellulose is much more resistant to wind washing. Fiberglass insulation and cellulose insulation offer similar r values. 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.

Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. 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. Fiberglass insulation blown in attic r2 2 r4 3. Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation.

Before choosing blown vs. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic. Compared to fiberglass cellulose is a superb air blocker. Cellulose is more difficult to cheat than fiberglass.

Cellulose forms a dense continuous mat of insulation in your attic. Cellulose insulates better than fiberglass especially in very cold weather. Or 7 inches of cellulose.