Cellulose Vs Fiberglass Blown Attic Insulation

So what are the advantages and disadvantages of each of these insulation materials.

Cellulose vs fiberglass blown attic insulation.

Cellulose insulation blown in wall r 3 8 r3 9. Blown cellulose is typically the preferred choice of insulation for attics. 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. Fiberglass insulation cannot stop air from passing through it meaning that more than 30 of heat or air conditioning can escape.

Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass. Batts or loose fill. Both fiberglass and cellulose insulation can be installed to completely fill the space inside of wall floor or ceiling cavity. Air moving through a vented attic deposits dirt and dust into fiberglass batts.

Types of fiberglass and cellulose insulation. Dirty fiberglass batts have a significantly reduced r value. Loose fill or blown cellulose insulation is manufactured primarily from recycled newspapers a very benign product so it poses virtually no ongoing health risk. Because it is denser than fiberglass cellulose is much more resistant to wind washing.

Blown in cellulose homeowner benefits. So it seems to me the real debate. Sometimes loose fill insulation is referred to as blown in insulation because an installer literally blows it into your home with a special machine. Cellulose insulation blown in attic r 3 6 r3 7.

Compared to fiberglass cellulose is a superb air blocker. Very common very problematic. Higher r value per inch. This is called wind washing.

Cellulose has an r value of 3 5 3 7 per inch where fiberglass has around 2 1 2 7 r per inch. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. 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. How are they similar and how are they different from blown fiberglass vs. 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.