Condition of Existing Insulation: If the fiberglass insulation is in good shape—dry, fluffy, and evenly distributed—it may not need to be removed; however, attic insulation that's compressed ...

cellulose can cost under $1.00 per square foot. “Our cellulose insulation runs about 84 cents per square foot,” says Harrah. “If I had a choice between fiberglass, foam, and cellulose ...

Adding blown-in insulation to your attic space is a popular way to improve energy efficiency and reduce heating and cooling costs. But what if you already have fiberglass insulation? Do you need ...