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Why Your Windows Frost and Fog

We have all experienced the phenomenon of our car windows fogging up and frosting over. Many of us know that the car windows might fog up when it’s warm inside the car, and we expect frost on our windshields after a cold night. But some glass windows in homes and businesses experience condensation, fogging, and frosting as well. This can be a little more frustrating because you might worry about the moisture damaging your windows, frames, and even your home. So why do your windows frost and fog? We will explore the causes and share how Sunbeam Window and Door can help you find windows to withstand the extra moisture.

Replacing frosted and fogged windows near Pennsauken, New Jersey (NJ) and the reasons why this happens.

The first thing to note is that windows themselves do not cause or prevent condensation, fogging, and frosting. Instead, it all comes down to temperatures and humidity. The root of window fog and frost is that conditions are right for condensation to form on the glass. Depending on the temperature, that condensation either remains as fog or freezes into frost.

You might have noticed that condensation is more of a problem when it's colder outside, often in the early morning. When the outside temperature lowers, it causes the surface temperature of your windows to drop as well. When the warmer air in your home comes into contact with the cold glass, condensation can form. This is more likely if the air inside your home is moist. If you’re experiencing a lot of condensation on the inside of your windows, your home probably has too much humidity.

So why does warm air meeting a cold window cause fog and frost? The humid, warm air inside your home carries moisture in the form of water molecules. When it comes into contact with a colder surface, the moisture reaches a dew point and forms water droplets. If this happens frequently, the areas around your window are at risk of forming mold. If it is winter, the water droplets can freeze if it is cold enough, causing frost. When this melts, the moisture can affect the window frame.

While well-insulated windows are a great benefit for your home’s energy efficiency, you might experience more condensation since less of the humid air in your home can escape. However, there are a few steps you can take to minimize condensation. The first is to use a dehumidifier. Since condensation is often a result of humid air, removing some of the moisture from the air inside your home can help reduce the issue. The next option is installing double-paned windows. These windows create air space between the two panes, helping keep the glass on the inside from cooling so much that the humid air will create condensation.

Condensation causing frost and fog on windows is not uncommon, but you can take steps to reduce the moisture. Plus, with durable windows from SunBeam Window and Door, you can relax knowing that your window can handle occasional moisture. Located in Pennsauken, New Jersey, we serve the surrounding areas in New Jersey and Philadelphia. Contact us today to learn more about the different types of windows we offer.