As the seasons change and winter approaches, many homeowners are left to deal with the consequences of draughty windows - increased heating bills and a chilly, uncomfortable living space. Fortunately, fixing leaky window seals is a DIY project that can be completed in a matter of hours, saving you money and making your home increasingly more energy-efficient.

The first step in fixing a leaky window seal is to assess the situation. Check the windows for any signs of water damage or moisture around the frames, sills, and seals. You should also look for any gaps or cracks in the seals, as these are most likely the culprits behind the leaks.

To fix the leaky window seal, you will need a few common household tools, including a utility knife, a screwdriver, and some weatherstrip materials. If your window has removable panels or sashes, you may be able to access the seal from the interior of the replace rotted window sill. If not, you may need to remove the window from its frame to repair the seal.

Start by cleaning the area around the seal with a damp cloth to remove any dirt, dust, or debris that may be exacerbating the leak. Next, use a utility knife to carefully pry the old seal away from the surrounding frame. Be careful not to damage the frame or any of the surrounding materials.

Once you have removed the old seal, use a screwdriver to scrape away any remaining adhesive or debris. This will give you a clean surface to work with and ensure that the new seal adheres properly.

Next, apply a bead of moldable sealant to the area where the old seal was located. Use a caulk gun to extrude a small amount of caulk into the gap, making sure to fill the entire area. Use a damp cloth to wipe away any excess caulk, smoothing the bead as you go.

Allow the moldable sealant to dry completely, following the manufacturer's instructions for drying time. Once the moldable sealant is dry, reassemble the window, if necessary, and test the seal to make sure it is airtight.

In addition to fixing the seal, you may also want to consider applying a clear coat of caulk to the surrounding frame to help seal any remaining gaps or cracks. This will further improve the energy efficiency of your windows and make them more resistant to the elements.

Finally, be sure to test the seal regularly to ensure that it remains watertight. Check for any signs of moisture or water damage, and make any necessary repairs promptly to prevent further damage.

By following these simple steps and using a few common household tools, you can fix a leaky window seal and enjoy a warmer, increasingly more energy-efficient home all year round.