How to Fix Foggy Windows: Your Guide to the Basics


People in glass houses shouldn’t throw stones. They’ll let the fog in.

Americans used 12.3 million tons of glass products in 2018. One of the most common glass products is glass windows. Many people are constantly throwing out foggy glass, but you don’t need to.

What causes foggy glass to occur? How can you prevent your windows from getting foggy? How can you fix your foggy windows?

Answer these questions and you can have crystal clear windows for years to come. Here is your quick guide.

Causes of Foggy Glass

Glass windows have a seal around them while they are closed. Most windows have two panes of glass with a layer of air in between them. This helps preserve the heat inside a home and increases the home’s energy efficiency.

But the seal around the glass can fail. This can cause the gas to escape and produce a light fog.

The air from outside can travel between the panes. It can produce condensation, which can become thick inside the window.

A seal can break due to water or wind damage. The window can also become warped during a heatwave or after excessive use. Home renovations can damage the window if a home maintenance company changes the wall or floor.

Preventing Foggy Glass

Install a good ventilation system inside your home. This will prevent hot air from damaging your windows.

If you get new windows, make sure your installation company is putting them in properly. Your panes should fit securely inside the window frame. The frame should be level with the ceiling and floor.

You may notice condensation running down your glass. Install a dehumidifier to pull water out of the air. You can then put a film kit over your windows for added support.

How to Fix Foggy Glass

Most people assume they have to change their panes when they have foggy glass. But you should get your window seal repaired instead.

Ask a window seal repair company to inspect your seal. They may need to fill a gap in it, or they may have to install weather strips.

You may be able to make some foggy glass fixes yourself. You can remove the fogged panes and replace them with new ones. To remove condensation on your glass, wipe it with a dry towel.

But if you are not experienced with glass repair, you should let someone else make repairs for you. You risk damaging your new panes or breaking your window frame.

Let the Fog Lift

Foggy glass does not have to make your home dark. Fog can settle in between your panes if air gets through your window seal. Your seal may break due to water or wind.

You can prevent foggy glass by removing condensation in your home. Make sure you are cleaning your windows properly.

If you have experience with glass, you can install a new seal around your windows. But you can let a professional company take care of your window for you.

Fixing your windows is one way to improve your home. Study home improvement by following our coverage.