What are the Causes of Window Leaks and How Do I Fix It?

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Dealing with bothersome window leaks that permit drafts to infiltrate your home can be incredibly frustrating. In this blog, we will thoroughly explore the various causes of window leaks and provide you with practical and enduring solutions to combat this issue. We fully comprehend the significance of maintaining a comfortable and energy-efficient living environment. That’s why we’re here to assist you in finding long-lasting remedies for those persistent window leaks that have been affecting your home’s comfort and energy efficiency.

Air Infiltration: A Common Culprit

Air infiltration is one of the primary culprits behind window leaks. It occurs when there are gaps or openings around your windows, allowing outside air to enter your home and indoor air to escape. This phenomenon is more common in certain types of windows, such as wood and vinyl windows.

Wood Windows

Wood windows are particularly susceptible to air infiltration because they are affected by humidity. Over time, wood can shrink and expand due to changes in moisture levels. As a result, the frames of wood windows may no longer fit properly together, creating gaps that allow air to infiltrate your home.

Vinyl Windows

Vinyl windows, on the other hand, can experience warping and sagging from their original form. This distortion can occur within just a few years, causing the vinyl frames to no longer fit properly. When your windows can’t close tightly or seal correctly, you’ll experience air infiltration.

Temporary Solutions

Many homeowners resort to temporary solutions to combat air infiltration, but these are far from ideal. Solutions like window kits with cellophane or sticky tape may provide a short-term fix, but they are not long-lasting or effective in the long run. We’ve seen homeowners use towels, plush toy snakes, bean bags, socks, and other creative measures to block drafts from their windows. However, these makeshift solutions are not the answer to your window leak problems.

Permanent Solutions for Window Leaks

If you’re tired of dealing with window leaks and drafts, it’s time to consider permanent solutions. At Thermal King, we offer high-quality, energy-efficient windows that can address the root causes of air infiltration.

Replacement Windows

One effective solution is to invest in replacement windows. Our windows are engineered to resist the effects of humidity, warping, and sagging, ensuring a tight and secure fit for years to come. With our lifetime-guaranteed windows, you can enjoy peace of mind knowing that your investment is protected.

Energy-Efficient Windows

Our energy-efficient windows are designed to keep your home comfortable year-round. They feature advanced insulation and sealing technologies to minimize air infiltration and prevent drafts. By reducing heat transfer, these windows can also lead to significant energy savings.

Vinyl Windows Done Right

If you prefer vinyl windows, we offer vinyl windows that are engineered to last. Unlike low-quality vinyl windows that warp and sag, our vinyl windows are built to maintain their shape and functionality over time. Say goodbye to the hassle of constantly readjusting your windows to keep drafts at bay.


Don’t allow window leaks and air infiltration to compromise your comfort and inflate your energy bills. Discover the causes of window leaks and learn how to fix them. At Thermal King, we specialize in delivering high-quality windows and doors that are engineered for perfection.

If you’re ready to transform your home with our energy-efficient and lifetime-guaranteed windows, contact us today. Our team of experts is here to help you choose the right windows for your home and ensure a hassle-free installation process.