Rolled Attic Insulation Fiberglass Vs Cellulose

Fibreglass is perhaps the most common product available in the market for insulation outpacing its close competitor cellulose by 50 1.

Rolled attic insulation fiberglass vs cellulose. Batt or rolled insulation or blown loose fill insulation fiberglass or cellulose can be installed on top of old insulation. Which means cellulose insulation can be compressed into a space and offer additional r value. This includes loose fill fiberglass which is made of 30 percent glass mineral wool which is 75 percent recycled content and cellulose which is made of recycled newspapers. Cellulose is more difficult to cheat than fiberglass.

Of these cellulose has a better r rating and is not as expensive as fiberglass. Cellulose has 38 better air infiltration than fiberglass. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Before choosing blown vs.

Fiberglass fibers may become airborne which can be considered a pollutant. Batt insulation take time to read this column. It is made from paper that has a minimum of 85 recycled content such as newspaper. Thus creating a more energy efficient home.

Insulation should be rolled out perpendicular to the joists and unfaced rolls should be used. Cellulose insulation is considered a greener material than fiberglass. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic. Blown in insulation requires a professional.

By nature the cells inside the cellulose insulation have their own insulating power. Or 7 inches of cellulose. It does not pollute the air during manufacture or use as much energy to produce as fiberglass. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to.

Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all. Attic insulation is accomplished with either fiberglass blankets batt or blown in 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. Batt insulation is available at home centers and lumberyards.

In contrast to fiberglass insulation cellulose insulation does not trap air in between it s fibers to control heat.