How to Weather Seal Your Windows

Weather sealing windows is important for several reasons including energy efficiency, comfort, moisture control, and noise reduction. Air leaks through windows can cause your home's heating and cooling system to work harder to maintain a comfortable temperature. This can lead to increased energy consumption and higher utility bills.

Drafts and air leaks around windows can create uncomfortable conditions inside your home, making it difficult to maintain a consistent temperature. Air leaks can also allow moisture to enter your home, leading to condensation and potential water damage.Weather sealing can also help reduce noise from outside, creating a more peaceful living environment.

Do you feel a draft coming through your windows, even on warm days? Do you notice moisture or condensation build up around the edges of your windows? If so, it may be time to weather seal them. Here are the steps to follow, but of course, follow any instructions from the manufacturers of products and tools you use:

1. Clean the windows and surrounding areas.

Before starting, make sure the windows and the surrounding areas are clean and dry. Use a mild soap solution and a soft cloth to clean the surfaces, and then dry them thoroughly.

2. Check for air leaks.

Use a lighted incense stick or a handheld fan to check for air leaks. Move the incense stick or fan around the edges of the window and look for areas where the smoke or air flow is disturbed. This indicates an air leak, so you can see where to focus your attention when sealing.

3. Seal gaps with caulking.

Use a silicone or acrylic caulk to seal gaps around the window. Cut the tip of the caulk tube to fit the size of the gap and apply a steady, continuous bead along the gap. Smooth the caulk with a damp finger or a caulk smoothing tool.

4. Apply weather stripping.

Weather stripping is a flexible material that is applied to the moving parts of a window, such as the sashes, to block air leaks. There are several types of weather stripping including foam tape, V-strip, and felt. Choose the type that is best suited for your window and apply it according to the manufacturer's instructions.

5. Install window insulation film.

Window insulation film is a clear plastic film you apply to the interior of the window to reduce air leaks. Simply cut the film to size, remove the backing, and apply it to the window. Use a hairdryer to shrink the film and create a tight seal.

Time to save money!

By following these steps, you can significantly improve the energy efficiency of your windows and reduce the amount of air and moisture that can enter your home. The amount of money you can save by weather sealing your windows will depend on several factors including the size and condition of your windows, the climate in your area, and the cost of energy in your region. According to the U.S. Department of Energy, sealing air leaks and adding insulation can save homeowners an average of 15% on heating and cooling costs. However, the actual savings can vary widely depending on your specific situation.

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