How To Prevent Condensation on Aluminum Window Frames

How To Prevent Condensation on Aluminum Window Frames

Condensation is a common problem in windows and usually not too serious. It can become a major problem when sweat from the condensation pools on the window sill. Excessive condensation can lead to mold, wood rot, and drywall damage. While reducing internal humidity helps alleviate this issue, there are several other routes worth taking. We’ll talk more about the causes of condensation and prevention tactics in this post.

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What causes condensation on windows?

Condensation occurs when warm, moist indoor air collides with a cooler surface. And since glass (primarily on windows) can be one of the coldest materials in your home, it attracts excess water vapor. Over an extended period of time, this causes an all-too-familiar fog effect.

When it comes to aluminum window frames, ‘window sweating↗’ is a natural occurrence. Since they readily transfer heat, when the outdoor temperature drops, any indoor heat present in a conditioned space, escapes through your aluminum windows and the frame of your window becomes colder. As the inside warm air comes in contact with the cold window frames, the temperature drop results in the release of moisture which is then seen in the form of droplets on your window.

How to Prevent Condensation in Aluminum Window Frames

Below are some steps you can take to prevent condensation↗ from building up on your windows.

Ventilate Excess Moisture Through Exhaust Fans

Bathrooms and kitchens are the major sources of humidity inside your house. Therefore, letting out the excess humidity through vents and/or exhaust fans can help prevent condensation on window frames by creating a dryer atmosphere.

Moreover, the implementation of kitchen and stove fans when you're cooking is even more effective if they’re left to run for an extra 15-20 minutes after you’re done in the kitchen. Similar logic should be used for bathroom vents or fans, in order to get good results.

Weather Stripping

Irrespective of the presence of a bad seal on the window system, preventing condensation on windows always begins with decent and effective insulation. Weather stripping↗ is one such avenue which can be explored in this respect. It is basically a protective strip that can be applied on the windows to prevent cold air from seeping in through joints and frames. This will prevent cooling walls and windows, and in turn, reduce condensation. 

If Window Replacement isn’t an option consider installing storm windows

If you have older window systems installed at your place, using storm windows during the winter months can really make a huge difference. It can help reduce condensation on your interior windows and boost your home’s energy efficiency.

While it has been observed that storm windows themselves can have condensation on them, they do reduce frost buildup on the interior windows. Moreover, the air space between the two windows allows the interior window to stay warmer. One such alternative can also be seen by replacing older single-pane windows with double, triple or quadruple glazed window systems as well.

Storm windows aren't the right choice for everyone

Storm windows are becoming less common because modern replacement windows offer more energy efficiency and aesthetic benefits but if you live in a historic home, storm windows could be a solution for you.

What if the condensation is between the window panes?

Condensation between the window panes↗ is a tell-tale sign of seal failure. This points to the glaring fact that the desiccant inside the window is becoming saturated. The most effective and long-lasting solution is to replace the window. If replacing the window is out of budget, the glass in the sash can also be replaced. Keep in mind that glass replacement is sometimes as expensive as window replacement and may not last as long as a full window replacement. Reach out to a professional to learn more about your options.

Vinyl & Fiberglass windows are better options

If you decide to replace your windows choose windows made from vinyl or fiberglass. Window frames made from vinyl or fiberglass transfer less energy than aluminum frames so they are less likely to experience condensation on the frame and between the glass.

The keys to preventing condensation

All the procedures put in place to avoid condensation on windows fall under certain categories. The foremost keys are managing the temperature and air flow inside, controlling the humidity and moisture levels in the house, and lastly, keeping cold air away from your house. 


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