Cellulose is more difficult to cheat than fiberglass.
Better for attic insulation fiberglass or cellulose.
The two main least expensive and most commonly used residential insulation materials is cellulose and fibreglass.
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.
Cellulose insulates better than fiberglass especially in very cold weather.
R values of fiberglass and cellulose insulation.
Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic.
Both cellulose and fiberglass insulation have their pros and cons but i feel that cellulose is the better bet overall.
What does matter is the type of fiberglass or cellulose and how well it was installed.
Cellulose has 38 better air infiltration than fiberglass.
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.
This keeps the air from moving within the insulation and from penetrations between the air conditioned space and the attic.
A given sample of cellulose insulation will provide better thermal performance than an identically sized sample of fiberglass insulation.
Blown cellulose is typically the preferred choice of insulation for attics.
Per square inch of insulation cellulose has a higher r value than.
Cellulose wins last update.