Leaking windows can be hard to troubleshoot if you don’t know what you’re looking for, and it needs to be fixed as soon as possible to avoid other problems, such as increased indoor humidity. Today, we talk about the most common sources of window leaks and how to fix them.
Types of Window Leaks
When you notice a leak, it’s important to note from where the water is coming. Not just to stem the flow of water, but also to find the source. The following are some of the most common types:
- Moisture on the Glass When It’s Not Raining — The good news is, this is not a window leak at all. In fact, it’s the reverse: condensation on the indoor-facing glass surface is indicative of a perfectly working seal. However, this means you have high indoor humidity, which needs to be addressed.
- Water Leaking From All Sides — This is usually indicative of gaps between the wall and frame. However, if rain isn’t falling directly on the windows and water keeps coming in, it could be a roof leak coming through the exterior wall.
- Water at the Bottom of the Frame — This is one of the most common types of window leaks, often caused by an improper fit between sash and frame. This happens when the sash and/or frame is warped, and may be accompanied by difficulty in opening and closing. In many cases, window replacement may be necessary.
Solutions to Window Leaks
- Control Indoor Humidity — In case of window condensation, you should look into controlling humidity levels. An whole-house humidifier/dehumidifier allows full control of indoor humidity all year round. If the condensation appears to be concentrated in one room, use a standalone dehumidifier.
- Reapply Caulking — Leaks around the frames may need a new seal. Make sure the old caulking is scraped off and the working surfaces are clean before applying caulking. You may want to practice getting a good bead before applying caulking to the windows.
- Replace Weatherstripping — If the water appears to be leaking through the gaps between window sash and frame, your windows may need new weatherstripping. Rubber weatherstripping can be easily replaced; however, you may need a professional to replace metal ones.
Should your windows require replacement, Renewal by Andersen® of Houston offers popular replacement window styles, including casement windows. Give us a call at (281) 547-6177, or fill out our contact form. We serve customers in Katy, TX, and the surrounding areas.