Is My Attic Insulation Is Cellulose Or Fiberglass

This problem has been successfully solved by installing fiberglass batt insulation over the top of loose fill or blown insulation.

Is my attic insulation is cellulose or fiberglass.

Like cellulose you need a big machine to blow it in. The bottom line is that cellulose can burn but fiberglass will not support combustion. Thus creating a more energy efficient home. Cellulose provides better sound insulation than fiberglass i e homes are less noisy with it.

Loose fill fiberglass seems to dominate attic insulation in new construction homes and has an r value of approximately 2 5 per inch. Fiberglass is a suspected carcinogen. Inspecting your attic insulation. Pros and cons of loose fill fiberglass attic insulation.

Fiberglass batts however are less expensive costing on average 0 30to 0 40a square foot for 6 inches of insulation. Cellulose cellulose insulation offers many advantages to your home such as its r value of r 2 6 per 100mm metric which is better than glass wool or rock wool. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic. Cellulose is more difficult to cheat than fiberglass.

If you check with the cellulose insulation manufacturers association they ll assure you that cellulose is definitely your best choice for insulation. Sources many fiberglass installers fluff the fiber with extra air so you don t get as much insulation as you re supposed to. First things first you need to go up into your attic inspect the condition of the insulation and calculate the current level of insulation. Cellulose forms a dense continuous mat of insulation in your attic.

Your attic should have a certain amount of insulation in it and the recommended level of insulation for your attic is dependent on where you live. In addition to its great r value cellulose also provides sounds insulation by providing mass and dampening. The trapped air molecules in the insulation are pulled up through the insulation into the colder attic air. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to.

You can get to the same place with either material. 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. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

Cellulose has 38 better air infiltration than fiberglass.