Cellulose Attic Insulation Vs Fiberglass

It does not pollute the air during manufacture or use as much energy to produce as fiberglass.

Cellulose attic insulation vs fiberglass. Cellulose has 38 better air infiltration than fiberglass. Per square inch of insulation cellulose has a higher r value than fiberglass. This allows the insulation to get into the small pockets and crevices that fiberglass wouldn t be able to. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.

Sources many fiberglass installers fluff the fiber with extra air so you don t get as much insulation as you re supposed to. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Thus creating a more energy efficient home. Cellulose provides better sound insulation than fiberglass i e homes are less noisy with it.

Cellulose forms a dense continuous mat of insulation in your attic. Fiberglass fibers may become airborne which can be considered a pollutant. The reality of installing cellulose insulation in contrast to fiberglass insulation cellulose insulation does not trap air in between it s fibers to control heat. Cellulose is more difficult to cheat than fiberglass.

A study by the university of colorado found that cellulose insulation reduced air leakage by 38. Fiberglass is a suspected carcinogen. 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. Cellulose insulation like spray foam insulation limits air movement.

By nature the cells inside the cellulose insulation have their own insulating power. It is made from paper that has a minimum of 85 recycled content such as newspaper. Which means cellulose insulation can be compressed into a space and offer additional r value. Fiberglass insulation cons air leakage fiberglass doesn t do much at all to slow the flow of air while cellulose has some success.

The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass. Cellulose insulation is considered a greener material than fiberglass. Fiberglass insulation cannot stop air from passing through it meaning that more than 30 of heat or air conditioning can escape. A given sample of cellulose insulation will provide better thermal performance than an identically sized sample of fiberglass insulation.

Not ideal for extreme cold the r value of fiberglass lowers considerably in extremely cold climates making cellulose a better choice. This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic.