Unbonded Blown-in Fiberglass Insulation
This information reflects our best understanding of product composition in 2016.
Blown-in fiberglass insulation can be either bonded or unbonded. Bonded types are made from cut or pulverized blanket or batt insulation and so contain a binder. This type of insulation is outside the scope of this CP. Unbonded insulation does not...
Blown-in fiberglass insulation can be either bonded or unbonded. Bonded types are made from cut or pulverized blanket or batt insulation and so contain a binder. This type of insulation is outside the scope of this CP. Unbonded insulation does not contain a binder and consists primarily of glass fibers with a lubricant to protect the fibers from damage, a dedusting agent and an anti-static agent to keep dust and static levels down during processing and installation. This type of insulation is most often used in open attic spaces or in retrofit applications within enclosed walls. It can also be installed in open wall cavities with the use of netting to hold it in place. The insulation is installed by using a blowing machine. In wall applications, the insulation is dense-packed to decrease the potential for settling. These products often have GreenGuard Gold certification and a wide range of recycled content between products - both pre and post-consumer. Post-consumer recycled content ranges from 8-62%.