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Why Are My Windows Fogging Up?

Have you ever wondered, “Why are my windows fogging up?” Foggy windows can interfere with the enjoyment and comfort of your home by reducing the amount of natural light that comes in.
This mainly occurs because of poor insulation. However, this is not always the case, as there may be other factors causing your windows to fog up. For instance, condensation can also occur when your windows are new. This is why manufacturers and contractors often recommend waiting to install new windows until after winter.
This blog will delve deeper into why you might be experiencing fog in your windows and what to do to stop it.
why are my windows fogging up

What Are the Causes of Windows Fogging Up in a House?

Windows fogging up in a house can signify multiple different things. If you see fog inside your windows, there is likely an issue with the seal around the glass. That’s because most houses use insulated windows.
This air (argon or krypton) helps keep temperature-controlled air inside your home. The seal failure around your window or insulated glass unit (IGU) can cause the temperature-controlled air to leak out of your home, causing fog on your windows.

What Are the Causes of IGU Seal Failure?

If you’re constantly asking yourself, “Why are my windows fogging up?” one of the main contributing factors is the failure of the insulated glass unit (IGU seal failure).
IGU seals may break due to several reasons. Here are some of the most common causes:
  • Exposure to excess heat: Since warm air expands and cool air contracts, the air inside a double pane window could constantly undergo these processes, stretching your seals and eventually breaking them.
  • Exposure to water: Check your window seals after a storm, heavy rainfall, heavy snowfall, or a flood. The seal in your windows protects against water getting into your home through the windows. However, this seal can break if exposed to water for too long, especially after stormy or snowy conditions.
  • Wear and tear: After a couple of decades, your seal may fail due to extended wear and exposure to water and sunlight. You may notice this failure if the fog in your double pane windows can’t seem to wipe off. This means you may need to call a professional to replace the seal.
condensation build up on bottom of window

How Does Condensation Cause Foggy Windows?

Moisture from air escaping through the glass panels causes fogging. This moisture forms into water droplets (exterior condensation) on the cold glass surfaces.
You’ll notice this most as the weather cools. Why? The heat and high humidity levels inside of your home mix with the cold outside air, condensing the moisture in the air into water droplets.
Your windows may also turn foggy due to extreme temperature differences inside and outside your home. This process can also occur when there are sudden temperature changes.
The best way to fix this problem is to call in a professional window company that specializes in repairing insulated windows. They can help determine if your seal has a problem and fix it so that no more heat escapes your home.

How to Get Rid of Foggy Windows in the House

Are you wondering how to get rid of foggy windows in your house? Here are some ways you can attempt to repair your foggy windows:

1. Cleaning the glass with vinegar and water
2. Repair any cracks in your windows before they worsen to prevent moisture infiltration and loss of insulation.
3. Replacing the IGU unit. You can do this by replacing the second pane of glass or the seal inside your insulated window. However, this process can be expensive.
4. Use a defogging spray to prevent your windows from fogging up. Your windows will be clean for a while, but the problem won’t disappear as the window insulation is still poor.

Ultimately, replacing foggy windows is the best way to get rid of them. Consult with your window manufacturer about a warranty for replacing your windows, ensuring there’s a lifetime warranty on IGU seal failure.

How to Prevent Your Windows from Fogging Up

There’s nothing worse than sitting at home and seeing your windows start to fog up. It’s an annoying problem that can be a real pain to fix.
Here are some tips for preventing your windows from fogging up:

1. Make sure that your windows have proper ventilation. If they don’t, the moisture inside the house will have nowhere to go and collect on the glass.

2. Purchase energy-efficient windows. These will help keep your home warmer in the winter and cooler in the summer, which means less moisture will condense on them.

3. Check with your manufacturer to see if your windows come with a lifetime guarantee. If they do, they’ll be more likely to last longer than without this guarantee.

4. Install your windows correctly using an experienced professional who knows how to avoid failure in direct-set glass and seals.

5. Install a dehumidifier in your home or set your thermostat to a lower temperature for those hot summer months.

6. Clean the window frames thoroughly with vinegar or an ammonia-based cleaner. This will remove any dirt or grime trapping moisture inside the frame.

7. Use blinds and curtains to reduce heat inside your home during hot summer days. This will help keep cool air circulating throughout your home and prevent condensation from forming on your windows.

Need Window Fogging Repair or Window Replacement? Contact the Experts in Vaughan, ON

If you’re fed up with asking, “Why are my windows fogging up?” it may be time to contact the window installation professionals at The Window Experts.

We pride ourselves on hard work and dedication as a professional window replacement company in Vaughan, ON. We have a wide variety of replacement windows for your selection.

If you need a window replacement, you can count on us to do the job professionally and affordably. For more information about getting a window replacement or window fogging repair, contact us at 416-844-0099 (GTA) or 866-566-9686 (Toll-Free) for a free estimate.
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