When there are drastic differences in the temperature and humidity between the inside of your home and outside, your glass windows will probably become temporarily fogged. But when the fog doesn’t clear, or you can’t wipe it away easily, the problem is more serious and indicates a defect in your insulated window glass. Below, learn what causes foggy windows and how to fix the issue in your home.

What Are Insulated Windows?

Most modern homes have windows that use double-pane or Thermopane glass. Because glass itself isn’t a strong insulator, these windows are manufactured using two panes of glass separated by a very thin layer of air or gas and sealed at the edges. This type of glass is more energy-efficient than single pane glass, helping block out the heat and cold to maintain a comfortable indoor temperature. 

Why Do Insulated Windows Get Foggy?

Your glass windows are constantly exposed to the elements and subject to major fluctuations in temperature, humidity, and pressure. Over time, these fluctuations can cause the seal holding the panes of glass in place to crack and develop leaks. These leaks not only let the insulating air or gas escape, but they also allow moisture in. Moisture condenses between the panes of glass, creating fog. When it dries, it can leave behind deposits that cause fogging. Age, water damage, and extreme heat can also cause the seals to fail, ultimately leading to fogged windows. Proper maintenance, including regularly cleaning and inspecting window seals, can help prevent damage and fogged window glass. 

How Do You Fix Foggy Glass Windows? 

Fixing fogged glass windows is important not only for improving your view, but also to ensure the windows remain efficient. There are three ways to tackle this problem. You can replace the defective glass panes or replace the window sash, which is the part of the window that opens and closes. Another option is to replace the entire window. In most cases, the entire window won’t need to be replaced. However, if there are other problems with it, replacement is the best option. It’s best to leave any window repair or replacement to a professional, as incorrect installation can lead to failure and a return of fogged windows. 

If your windows are fogged or have other damage, the specialists of ValleyView Glass & Screen in Northfield, MN, can help. Serving the South Metro area, they have more than 30 years of experience with glass windows, window restoration, foggy window repair, and storm window repair. To learn more information and request an estimate, call (612) 747-8425 to speak to a knowledgeable representative. Visit them online to see a gallery of their work.