Is There Too Much Insulation in Your Attic? For many homeowners, ensuring their attic space is well-insulated is one of the most cost-effective ways to maximize their home’s energy efficiency. No matter what insulation type you use, proper attic insulation should have the optimal R-value based on your location and home requirements. Whether you use blanket insulation, fiberglass insulation, spray foam insulation, or cellulose insulation, the goal is to achieve the proper depth and ideal R-value for your attic space.…