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Top Causes of Window Seal Failure

A window is an important part of any home. Not only do they grant you a beautiful view outside, but they also give your home access to natural light, which enhances your energy efficiency. However, there are times when they won’t perform as they’re supposed to due to window seal failure, which is a common problem homeowners face. Your window seals keep the gasses in your windows in place, thus, improving your home’s insulation. Having a faulty window seal will make your home feel uncomfortable during the winter and waste cool air during the summer. Here are the top causes of failure.

Old Window Seals

Windows have an expected lifespan, so does your window seals. This is especially true if your home uses dated window models that aren’t up to standard with modern window advancements. If you choose to keep your old windows running, be sure to replace the weatherstripping regularly for them to perform better.

Trapped Moisture

Modern windows offered by window companies are built according to industry standards that make them sufficiently resilient against nature’s elements. As your window ages, water creeps into the window seal, making it loose, which lets in more air and water. This then creates moisture that causes your frame to rot, promotes mold growth and causes the metal components to rust.

Extreme Temperature Changes

Extreme shifts in the weather can lead to your window seals failing prematurely. The heat during the day gets trapped in the window and causes it to expand. Once night falls, the cold air enters your home bringing along humidity. This phenomenon is known as solar pumping, which wears down your window seals, leads to moisture buildup and causes premature deterioration.

Poor Installation Job

Residential windows can last anywhere from 15 to 20 years or more, with proper maintenance and repairs conducted. However, if your windows are failing a few years after installation, it could be the result of a manufacturing defect or faulty workmanship. The sealant used could be made of subpar material or that the sealant wasn’t cured correctly.

Searching for the best window contractor in San Francisco? Look no further than Renewal by Andersen® of San Francisco! We’re the trusted names when it comes to providing the best windows and doors on the market. Contact us at (510) 263-3210, or fill out our contact form for a FREE virtual consultation. We serve clients in San Francisco and the rest of the Bay Area.


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