types of blown in attic insulation
The most common insulation materials are fiberglass, cellulose and foam. Insulation types include loose fill, batts, rolls, foam board, spray board and vapor barriers. Tip: The type of insulation you need depends on which is currently installed and the required R-value. Blown-in/loose fill. 1  Usually made of fiberglass or cellulose (recycled paper fiber) 2  Blown or sprayed into place with pneumatic equipment. 3  Ideal for hard-to-reach areas such as attics.  Can fill wall cavities and installed over existing insulation.