How to Keep a Draft Out of a Window
Windows that leak air and let in drafts make you uncomfortable. They also raise the costs of heating and cooling your home. Although replacing your leaky windows will solve the problem, the California Energy Commission estimated, as of the time of publication, that new energy-efficient windows averaged $500 each. It also takes five years or more to recoup their cost from the money you save on energy. For a less expensive solution, eliminate drafts by weatherstripping and caulking your existing windows. Does this Spark an idea?
Things You'll Need
- Measuring tape
- Weatherstripping
- Rags
- Scissors
- Utility knife
- Staples and staple gun
- Tacks and tack hammer
- Solvent
- Putty knife
- Firm brush
- Caulking gun
- Caulk
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Instructions
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Weatherstripping
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Measure and add up the perimeters of all your windows. Purchase 5 to 10 percent more weatherstripping than the total measurement to make sure you have enough.
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Prepare the surface by cleaning it and then drying it so your weatherstripping adheres better. Apply weatherstripping only when the surface temperature exceeds 20 degrees Fahrenheit.
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Measure the window perimeter twice before cutting to prevent errors. Cut the weatherstripping to fit your measurements. Use scissors or a utility knife.
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Apply and fix the weatherstripping in the window gaps. The exact technique depends upon which of the many available materials you choose. Simply press adhesive-backed tape, adhesive-backed foam or V-strip into position. Staple or tack reinforced felt, tubular vinyl or rubber gaskets into place.
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Check that the window slides freely with the weatherstripping in place.
Caulking
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Remove old paint and caulk with a solvent, putty knife or firm brush.
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Wipe the area clean with a rag. Allow it to air-dry if it is damp.
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Caulk evenly between the wall and frame and between joints in the window frame using a caulking gun. The best technique is to hold the gun at 45 degrees to the crack and caulk continuously without interruption. Take care to fill each crack completely.
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Correct any flaws in the seal before the putty dries. Using a putty knife, push in any caulk that comes out. Add another layer with the caulking gun to areas that shrink, making a seamless seal.
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Tips & Warnings
Felt and adhesive-backed foam or tape weatherstripping need replacement after only one to two years. Tubular gaskets normally last at least five years.
The best time to caulk is during warm, dry weather.
Insulated draperies or other window treatments can help you control your home's temperature and help you stay more comfortable.
Keep your home air quality safe by assessing your home's ventilation before sealing your windows. A home with insufficient ventilation can accumulate dangerous levels of indoor pollutants, according to the U.S. Department of Energy.
References
Resources
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