Cellulose Vs Fiberglass Attic

Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass.

Cellulose vs fiberglass attic.

Both fiberglass and cellulose insulation can be installed to completely fill the space inside of wall floor or ceiling cavity. Cellulose insulation blown in attic r 3 6 r3 7. Cellulose insulates better than fiberglass especially in very cold weather. You can get to the same place with either material.

Blown cellulose is typically the preferred choice of insulation for attics. Cellulose has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch. 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. So it seems to me the real debate.

More comfortable and energy efficient. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the 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.

Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall. So what are the advantages and disadvantages of each of these. Higher r value per inch. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

Cellulose wins last update. Since cellulose is blown in it fills all the gaps crevices nooks and crannies in your attic unlike batts that can leave gaps. Properly installed they will both remain in place for the life of the home. Or 7 inches of cellulose.

Air moving through a vented attic deposits dirt and dust into fiberglass batts. This is called wind washing. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. Cellulose insulation blown in wall r 3 8 r3 9.