What is the Best Attic Insulation? (Spray Foam vs. Fiberglass vs. Cellulose) Cellulose Vs Fiberglass Blown In Insulation
Fiberglass' main advantages are that it is lighter weight per unit R value, and it can 'dry out' if it gets wet -- cellulose usually needs to be How to Beef Up Attic Insulation | This Old House ...