Cellulose Vs Fiberglass Blown Attic Insulation

Because it is denser than fiberglass cellulose is much more resistant to wind washing.

Cellulose vs fiberglass blown attic insulation.

How are they similar and how are they different from blown fiberglass vs. Blown in cellulose homeowner benefits. Batts or loose fill. This is called wind washing.

Cellulose insulation blown in wall r 3 8 r3 9. The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Unless you opt for spray foam then the insulation choices normally come down to 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.

Very common very problematic. Cellulose retains more of its r value through a wider range of temperatures compared to fiberglass. Fiberglass insulation cannot stop air from passing through it meaning that more than 30 of heat or air conditioning can escape. Types of fiberglass and cellulose insulation.

Cellulose insulation blown in attic r 3 6 r3 7. Air moving through a vented attic deposits dirt and dust into fiberglass batts. 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.

There are two ways to get your insulation whether fiberglass or cellulose. So it seems to me the real debate. Blown cellulose is typically the preferred choice of insulation for attics. So what are the advantages and disadvantages of each of these insulation materials.

Both fiberglass and cellulose insulation can be installed to completely fill the space inside of wall floor or ceiling cavity. Cellulose insulation like spray foam insulation limits air movement a study by the university of colorado found that cellulose insulation reduced air leakage by 38. Dirty fiberglass batts have a significantly reduced r value. Properly installed they will both remain in place for the life of the home.

Compared to fiberglass cellulose is a superb air blocker. Fiberglass batts however are less expensive costing on average 0 30 to 0 40 a square foot for 6 inches of insulation. Sometimes loose fill insulation is referred to as blown in insulation because an installer literally blows it into your home with a special machine.