When it comes to insulating your attic, there are a few options to choose from. Foam insulation is one of the most effective, providing a comprehensive air, vapor and water barrier. Blown fiberglass insulation is another popular choice, as it can fill any gap and keep the heat inside your home. Cellulose insulation is also a great option, as it has a higher R-value than other materials.
Before you decide on the best type of insulation for your attic, it's important to consider the R-value recommended by the U. S. Department of Energy and to hire a professional to inspect existing insulation for asbestos.
Foam InsulationFoam insulation is one of the most effective types of insulation for attics.
Closed-cell foam provides the most insulation and offers a comprehensive air, vapor and water barrier. Sealing and insulating your home can save you up to 10% on your annual energy bills and, at the same time, improve your home comfort in winter and summer. The first step is to check the attic and confirm that you need more insulation and, probably, some airtight sealing.
Blown Fiberglass InsulationBlown fiberglass insulation is another popular choice for attic insulation.
The material used for blown fiberglass insulation is the same as that of foam insulation. However, it differs depending on the distribution method. The cellulose is then inflated, reflecting the blown fiberglass insulation method. It is blown to fill any gap, keeping the heating inside and preventing cold air from entering the house.
Cellulose InsulationCellulose insulation is also a great option for attics. It generally has a higher R-value than other materials and can be shredded and recycled with cellulose and boric acid addition for insect control and fire resistance. A well-publicized study carried out by Oak Ridge Laboratories in 1991 revealed that fiberglass insulation for loosely filled attics lost much of its insulating value when temperatures dropped below 20 degrees, making loosely filled fiberglass an inferior product compared to cellulose.
R-Value ConsiderationsRegardless of the insulation product you choose, find out what the R-value is recommended for the attic by the U.
Department of Energy. At the end of the work, the contractor must provide you with documentation that demonstrates how much insulation has been added and what the new R-value of insulation is for your attic. In addition, a professional can examine existing insulation to determine if it contains asbestos, which may be present in older homes that haven't been insulated recently.
ConclusionWhen properly installed, both types of insulation fill every nook and cranny of a space and form a perfect air barrier.
But if you feel a noticeable drop in temperature soon after you turn off the heating, you probably have a problem with the attic's insulation (or lack of it). Before installing new attic insulation, consider hiring a professional to inspect the existing insulation. We believe that the best type of insulation for attics is blown cellulose, since it generally has a higher R-value than other materials. Then, once you've finished reading, you'll be able to evaluate what the best attic insulation is for you and your family.