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How Spray Foam Insulation Can Be Used In Your Home

by April Carlson

Improving the insulation in your home is the first step to decreasing your monthly power bills and staying more comfortable during extreme cold or hot weather. Improving insulation takes a combination of adding insulating material and sealing gaps where air can escape. Spray foam insulation does an excellent of both. Here's how you can use this type of insulation in your home.

The Attic

The attic is probably the first place that pops into mind when you think of adding insulation. You may have fiberglass batt insulation in there now since it has been a popular type of insulation for many years. Spray foam has a few advantages over fiberglass, and you may want to consider switching. For one thing, the foam expands and molds itself around the various shapes in your attic so there is no place for air to leak. All the cracks get covered with insulation. Also, spray foam becomes hard when it cures, so there is no fluffy material to attract rodents and other pests for nesting. Spray foam withstands water without deteriorating too. When fiberglass batt insulation gets wet from a roof leak, it mats down. This causes it to lose insulating power and encourages the growth of mold.

The Crawlspace

Spray foam insulation is an excellent material for the crawlspace since it clings to walls and the ceiling to form a complete barrier against air and moisture leaking into your home above. The type of spray foam used in exterior applications like a crawlspace is usually the waterproof variety. That can help keep water out of your home too. Spray foam can be used along with vapor barriers to encapsulate the crawlspace to keep it dry and free from mold and foul odors from dampness.

Exterior Walls

You can also add spray foam to exterior walls to improve the energy efficiency of your home. In addition, the material can act as a sound barrier to keep outside noise from being so noticeable inside your house. It also acts as a water barrier to keep your home drier. The foam expands inside the wall cavity and then hardens and dries. This provides additional structural support as well as improving insulation.

Spray foam may be easier to apply to a home when it is being built, but it is possible to add it to an existing home too. It can be done without tearing out drywall since the foam is pumped through an access hole. The foam adds superior insulation while filling gaps, so your HVAC will be more efficient and you'll have fewer chilly drafts.

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