There are a few options for adding insulation to your attic. You want to consider how efficient each type is and how much it costs. Another thing you may want to think about is the method of installation, especially if you want to install the insulation yourself. Here are the common ways to install attic insulation.
Spread Out Fiberglass Batt Rolls
Fiberglass batt insulation is a common choice for attic insulation, because it is inexpensive and easy for DIY installation. The insulation comes in large rolls that you roll out on the attic floor. The drawback to this type of insulation is that it can't conform to different shapes and fill cracks, so you'll have to manually seal air leaks in the attic, before you put the insulation down.
Blow In Cellulose Insulation
Another installation method is blowing the insulation into the attic with a hose. Cellulose or fiberglass is used in this process. If you install the insulation yourself, you'll need to wear protective gear, to keep from breathing in fibers that float through the air during the installation. It's possible to rent equipment and install blown in insulation yourself, but it is more convenient to hire a contractor to do the job. Plus, it is easier to make mistakes, when working with this type of insulation. You'll need to seal all air leaks in the attic first, and place vents in the attic, so air can continue to circulate, with the insulation in place. Installing blown in insulation requires special equipment that you can rent from a home improvement store. The equipment consists of a large blower that sits on your lawn and a long hose that reaches to your attic. A helper fills the blower, and you control the hose, as it blows insulation pieces into your attic. You may not want to attempt working with blown in insulation yourself, unless you're pretty handy with home improvement projects.
Spray Insulation Foam In The Attic
Spray foam insulation is an excellent material for improving the energy efficiency of your home. The material sprays on as a foam and seals all the air leaks, as it molds around pipes and expands. You can have this foam sprayed on the walls and floor of your attic, to form a hard layer of insulation that also acts as a water barrier. You'll probably want a professional to install spray foam insulation, because it is difficult to work with and it needs to be applied while you wear full protective gear. You can buy spray foam insulation kits from a home improvement store, but those are generally for small areas. If you want to cover your entire attic, it's best to hire an experienced professional to do the job.
Since you're installing insulation to improve the energy efficiency of your home, you want to make sure the insulation installation is done correctly. Since things can go wrong with DIY installation, consider hiring a contractor to install whatever type of insulation you choose so you get the optimal results from having it placed in your attic.
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