Sealing the air leaks in your home is often the best first step toward reducing your energy bills and increasing the comfort of your home. What good is a high efficiency HVAC system or energy efficient windows if your home is leaking lots of air?
Most homes have significant air leaks throughout the home, which means dollars are leaking out of your home every day.
Air that leaks through your home’s envelope; the outer walls, windows, doors, and other openings waste a lot of energy and increases your utility costs. Air leakage also contributes to moisture problems that can affect your family’s health and the home’s durability.
A well-sealed envelope, coupled with the right amount of insulation, can make a real difference on your utility bills and your comfort. It not only greatly reduces heating and cooling costs, but also helps reduce outside noise, control humidity, reduce pollen inside the home, and helps keep insects and rodents out of your attic.
Caulking and weatherstripping around doors and windows are two simple and effective air-sealing techniques you can do yourself. It’s smart to check around windows and doors annually for cracks and gaps that need attention.
Seal & Insulate the Attic
In the attic air leaks through many areas:
- Behind and under kneewalls
- Attic hatch
- Wiring holes
- Holes for plumbing and pipes
- Dropped soffits that are open to the attic
- Recessed lights
- Furnace flue or duct chaseway (the hollow box or wall feature that hides ducts)
Once all gaps are sealed the next step is to properly insulate the attic. Adding insulation to the attic is a project whose benefits can be substantial.
Watch this video for more information about air sealing and insulating your attic.