In many homes, spray foam insulation is the biggest energy-saving opportunity. It reduces heating and cooling costs by keeping conditioned air from escaping through the roof, especially in colder climates. It helps create more consistent temperatures throughout the home, and it can cut noise levels as well. The Department of Energy recommends that you install an R-30 or higher rating of attic insulation.

The type of insulation you choose will depend on the size of your attic and the climate where you live. It is also important to properly air seal the attic before adding insulation, as this can help improve performance. ENERGY STAR offers rebates and special financing for attic sealing and insulation as part of its Home Upgrade program, and assistance is available for low-to-moderate income families through the Weatherization Assistance Program.

How Proper Attic Insulation Lowers Heating and Cooling Costs

Fiberglass batts are a popular DIY choice because they are pre-cut to fit between attic joists and can be installed with simple hand tools. However, they are not as effective as other types of insulation and may be reduced in effectiveness by gaps or compression.

Loose-fill cellulose insulation, made from recycled paper and wood products, is another option. It can be easily shaped and conformed to oddly-shaped spaces, and it is typically treated with the mineral borate to boost fire and pest resistance. This material is more expensive than fiberglass and is more difficult to install, but it has a higher R-value of R-3.6 to R-3.8 per inch of thickness.

Noble Insulation Inc
1201 Pennsylvania Ave Unit D, Richmond, CA 94801
650-686-2965