Cellulose Versus Fiberglass Attic Insulation

You can get to the same place with either material.

Cellulose versus fiberglass attic insulation.

If paired with a vapor barrier in a high moisture environment like your basement it can be problematic. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. So it seems to me the real debate. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass.

When using cellulose blown in dry insulation it requires a machine to achieve its purpose and a training session from wherever you rent the blower from. Fiberglass insulation is the easiest insulation product on the market to install and if installed correctly the most effective product on the market for home attic insulation. Or 7 inches of cellulose. Both fiberglass and cellulose insulation can be installed to completely fill the space inside of wall floor or ceiling cavity.

Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass. 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. Cellulose insulation blown in wall r 3 8 r3 9. Lastly when blown onto the floor of an attic with vented soffits both loose fill cellulose and fiberglass are susceptible to wind.

Cellulose and fiberglass are fibrous insulation which can easily trap moisture. 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.