When I wanted to add insulation to the attic in my home I called around for estimates. Cochran & Son's Insulation not only came in a lot cheaper, they were a lot more professional than the other companies. They specialize in blown-in attic insulation and will use fiberglass and cellulose. They do batts and will blow-in walls. They will insulate new or existing structures. Give them a call and they will give you a free estimate.