Fiberglass Vs Cellulose Insulation For Attics

The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass.

Fiberglass vs cellulose insulation for attics.

The attic is one of the most essential areas of the home to ensure proper insulation in. Cellulose wins last update. Fiberglass insulation and cellulose insulation offer similar r values. Pros and cons of loose fill fiberglass attic insulation.

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. Attic insulation keeps the desirable temperature in and the undesirable temperature out. Blown in insulation is used for new constuction and retrofitting existing attics with additional insulation. Loose fill fiberglass seems to dominate attic insulation in new construction homes and has an r value of approximately 2 5 per inch.

See below for homeowner vs. Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall. When used in an attic space however both types of insulation are ineffective at air flow across the attic floor such as a strong gust of wind. If fiberglass batts become compressed losing some of their air pockets then this insulation may be more affected by air flow than cellulose which performs well regardless of density.

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. R values for blown in are determined by the material installed settled depth and density. Don t let money fly out of your roof. Installer benefits for cellulose and fiberglass.

Or 7 inches of cellulose. Fiberglass batt or roll insulation r3 2. Blown cellulose is typically the preferred choice of insulation for attics. Both cellulose and fiberglass insulation provide about the same level of insulating power or r value per inch with slightly different results based on the installation procedure.

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. So what are the advantages and disadvantages of each of these. Fiberglass insulation blown in attic r2 2 r4 3. Posted september 19 2019 by lewis insulation filed under attic insulation.

If you check with the cellulose insulation manufacturers association they ll assure you that cellulose is definitely your best choice for insulation. Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic. Unless you opt for spray foam then the insulation choices normally come down to cellulose and fibreglass.