Fiberglass fibers may become airborne which can be considered a pollutant.
Cellulose insulation in attic vs fiberglass.
Per square inch of insulation cellulose has a higher r value than fiberglass.
Both fibreglass and cellulose are the two most inexpensive insulation products that you could use.
It does not pollute the air during manufacture or use as much energy to produce as fiberglass.
Rather than trying to meticulously lay fiberglass insulation over the attic homeowners and builders can simply blow cellulose insulation throughout the attic.
Attic blown cellulose is typically the preferred choice of insulation for attics.
Cellulose insulation is considered a greener material than fiberglass.