How to Prevent House Windows from Fogging-up

windows fogging up, double pane windows work

The Spruce
Photo: The Spruce

If your windows are constantly fogging up, it may have a damaged or broken seal. This can cause water damage, mold and even floor stains. It is best to get the issue sorted out as soon as possible. You should contact professionals like Apex Window Werks to sort out the problem with your foggy windows. However, there are a few simple things to do which can prevent fog in your windows.

How to prevent foggy windows

  1. Use a dehumidifier – This system will remove all moisture from the air and thus prevent condensation on your windows.
  2. Invest in a window film kit – This should be applied to windows to keep them free from condensation. It works by blocking warm air from inside the home from reaching the cold glass.
  3. Turn your fan on – Even in winter, try to turn fans on to stop the warm air from inside your home from sticking to your windows.

These solutions are temporary ways to prevent foggy windows. A permanent solution would be to replace your window panes. You should plan accordingly to design your living room look fabulous with no problems such as foggy windows and easy when you plan to move.

Why do windows become foggy?

Windows will become foggy in extreme temperatures between indoors and outdoors, too many plants in your home and if the window seals are broken or damaged. Broken window seals allow moisture to form between the panes and give your windows a milky look.

How do seals break?

There are a few reasons seals may break, apart from old age. These include:

  1. Retention of water in the frame or inadequate draining of water around the window.
  2. Too much exposure to sunlight, which builds up heat, causing the panes to expand and contract. This will eventually weaken them.

How do double pane windows work?

Double pane windows, otherwise known as insulated glass windows work extremely well against fog build up. They can handle various types of weather conditions and do a great job of retaining heat in the winter and cold air in the summer. They contain an airspace which is responsible for insulation, and this is found between the glass panels. This insulation aids in maintaining a constant temperature and minimizes heat loss. Most contemporary windows have two seals. The inner seal protects against moisture and corrosion and the outer seal which protects the durability of the window. The seals hold a spacer in place which contains a gas (usually argon) which absorbs water. When one of the seals breaks, the other seal is able to cope on its own for a period of time. As the window ages, the mechanisms begin to break down and this causes both seals to wear out which causes condensation. This is a good time to think about replacing your window pane.

Although there are many ways to prevent condensation in windows, they are only viable for a short period. If your windows are old and do not insulate well, you need to consider upgrading them. In the long-term they will decrease the amount of money you spend on energy bills.


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