One of the benefits of blow insulation when compared to types like fiberglass batts, is that blow-in insulation is more efficient. Loose-fill insulation is a monolithic layer of insulation without seams as are found in batts, studies have shown that loose-fill insulation performs up to 22% better than batts of the same R value. Adding loose-fill insulation to your attic is one of the fastest paybacks of any home improvement project. The amount of money you save on energy cost will add up quickly over the next couple of years, more than paying for itself, and even bringing return on your investment.