Sealing Attic Air Leaks

Imagine that you have a small boat and steered it into a cluster of jagged rocks. Small air leaks into uninsulated attic space are a major source of heat loss in many homes. Attics are like a superhighway for unwanted air and pests.

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Sealing attic air leaks.

These cutouts can leak small amounts of air if they are not sealed properly. Again look for signs of dirty insulation to indicate air is moving through. Air sealing the attic perimeter air sealing the wall plate around the perimeter of your attic blocks air from escaping around the outer edges of your home. Sealing duct leaks can improve the efficiency of your hvac system by around 20.

Lights and fans require electricity to function therefore holes are cut into your ceiling s drywall. If you have ducts that aren t sealed you are probably leaking a lot of conditioned air into your attic space. Even though insulation may be piled against or stuffed into these spaces they can still leak air. Attics are often under insulated and under sealed leading to wasted energy and wasted spend by the homeowners.

It s usually the hardest place to air seal because the cramped space underneath the eaves where the roof rafters rest on the outer wall makes it hard to move your hands and head. If you have a finished attic seal behind the kneewalls finished rooms built into attics often have open cavities in the floor framing under the side walls or kneewalls. While you are in the attic sealing air leaks look for any ductwork that may be up there. Keep your home comfortable and critter free by air sealing attic hatch doors which can be real air leakers between a bedroom ceiling and the attic.

When standing under your attic look at the ceiling and check where your light fixtures and fans are located. Attic air sealing is the priority your focus should be on the attic when you begin air sealing. Chances are your ceiling has the equivalent of a 2 ft. Here s how to locate the leak spots and plug them without spending a lot of money.

Usually air leaks occur in these spaces.