Rolled Attic Insulation Fiberglass Vs Cellulose

Which means cellulose insulation can be compressed into a space and offer additional r value.

Rolled attic insulation fiberglass vs cellulose.

Attic insulation is accomplished with either fiberglass blankets batt or blown in insulation. It does not pollute the air during manufacture or use as much energy to produce as fiberglass. Cellulose has 38 better air infiltration than fiberglass. It is made from paper that has a minimum of 85 recycled content such as newspaper.

Blown in insulation requires a professional. Or 7 inches of cellulose. Before choosing blown vs. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic.

Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. You can get to the same place with either material. Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation.

Batt insulation take time to read this column. In contrast to fiberglass insulation cellulose insulation does not trap air in between it s fibers to control heat. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to. Both of these insulation materials share common characteristics and both of them are directly competitive in the residential insulation market offering distinct options when deciding what product to pick from the two.

Cellulose insulation is considered a greener material than fiberglass. Fiberglass fibers may become airborne which can be considered a pollutant. Fibreglass is perhaps the most common product available in the market for insulation outpacing its close competitor cellulose by 50 1. By nature the cells inside the cellulose insulation have their own insulating power.

Batt insulation is available at home centers and lumberyards. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Of these cellulose has a better r rating and is not as expensive as fiberglass. 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.