Attic Insulation Blown In Fiberglass Vs Cellulose

Cellulose insulation blown in attic r 3 6 r3 7.

Attic insulation blown in fiberglass vs cellulose.

Blown in cellulose homeowner benefits. There are three types of blown in insulation. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. So it seems to me the real debate.

Compared to fiberglass cellulose is a superb air blocker. Blown in insulation sometimes referred to as loose fill insulation is insulation literally blown in with a blowing machine. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Blown cellulose is typically the preferred choice of insulation for attics.

Dirty fiberglass batts have a significantly reduced r value. Higher r value per inch. Blown fiberglass on the other hand is made up of very fine strands of glass and these tiny fibers are a carcinogen that can easily be inhaled into your lungs. Air moving through a vented attic deposits dirt and dust into fiberglass batts.

So what are the advantages and disadvantages of each of these insulation materials. This is called wind washing. Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass. How are they similar and how are they different from blown fiberglass vs.

Properly installed they will both remain in place for the life of the home. There are two ways to get your insulation whether fiberglass or cellulose. 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.

Because it is denser than fiberglass cellulose is much more resistant to wind washing. Batts or loose fill. Cellulose insulation blown in wall r 3 8 r3 9. Sometimes loose fill insulation is referred to as blown in insulation because an installer literally blows it into your home with a special machine.

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. Very common very problematic. Types of fiberglass and cellulose insulation.

Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation.