Weatherproofing Your Windows

There are a lot of ways that you can fix leaky windows. Such problems could come from rotten wood around the window frame, cracked caulking, or even gaps around the windows. According to the United States Environmental Protection Agency, as much as 10-15% of a home’s energy is lost through the windows. The U.S. Department of Energy states windows can be responsible for up to 25% of your heating bill. Some examples:

• Use sealant foam around the edges.
• Apply window insulation film.
• Use snakes to manually stop air.
• Hang heavy drapes around the windows.

We recommend that you contact our professionals to see where we can keep your home airtight and prepared for the winter.

Weatherproofing windows can be easy. Try using window insulation film, a clear plastic sheet that can shrink into place with a hairdryer. It creates an extra layer between your home and the chilly air outside without blocking your view. Draft stoppers or removable thermal curtains can also work wonders for a quick fix, adding an insulating barrier that traps warmth inside.

Another popular choice is applying weatherstripping around the edges of your windows to create a snug seal that keeps drafts from sneaking in. Combine that with a good set of caulk to seal any cracks, and your windows will be ready to handle whatever winter throws your way.

When it comes to window weatherproofing, the best weather stripping depends on your window type and how much sealing power you need. Adhesive-backed foam tape is a popular and affordable choice for double-hung or sliding windows. It’s easy to install, provides a good seal, and works well for smaller gaps. If you need something more durable, a V-strip (also called a tension seal) is a flexible plastic or metal strip that presses against the window to block drafts—perfect for creating a long-lasting seal on moving parts.

To weatherproof windows, clean the frame thoroughly. Dirt and dust can prevent the weatherstripping from sticking properly. Once the surface is clean and dry, measure the areas where the window meets the frame to determine how much weatherstripping you’ll need. Next, choose the right type of material for your window.

Adhesive-backed foam tape is a great option for smaller gaps, while V-strip or silicone weatherstripping is good for sealing around moving parts. Cut the weatherstripping to size, then carefully press it into place along the window’s edges. Once it’s applied, test your window to ensure it still opens and closes smoothly.

Begin weatherproofing by inspecting the edges of the window frame for gaps or cracks. These are the spots where air, water, or pests can sneak in. Clean the area thoroughly to remove dirt, old caulk, or peeling paint. A clean surface helps the sealant stick better.

Once the frame is prepped, apply a high-quality exterior caulk—silicone or polyurethane-based sealants that best withstand the elements. Use a caulk gun to carefully fill the gaps, running a smooth bead along the seams between the window frame and the siding. Consider using expanding foam for extra insulation before sealing with caulk for larger openings.