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How to Fix Moisture & Condensation Between Double Pane Windows

When condensation between double pane windows forms, the seal on the glass is broken. In humid climates, wooden window frames are often the culprit. The wood gets too wet and starts to rot and eventually the glass seal breaks down. In these situations, sometimes fixing the seal is a matter of replacing a single pane and its seal.

Tips to Fix Condensation Between Double Pane Windows

condensation on window

If there’s condensation between the window panes, you’re likely losing money on energy costs. Here are some tips to help get rid of the condensation between your window panes:

  1. Try cleaning the windows to get rid of any buildup that isn’t condensation.
  2. Replace a single window pane instead of the whole window unit to save money.
  3. If a window is old or rotting, you should have a professional evaluate whether the whole window needs to be replaced.

At Glass Doctor®, we help you save money by replacing the pane instead of the whole window.

How Insulated Glass Works

With double pane windows, the insulating airspace in between the glass panels maintains consistent temperature and reduces heat loss. Most modern windows have two seals: an inner seal to protect against moisture and corrosion and an outer seal to protect the strength of the window. The seals hold a spacer in place—usually a tube containing water-absorbing chemicals.

Double-Pane Window Cross Section

Why Do Seals Break?

For the most part, insulated glass windows work extremely well. They handle all types of weather, including cold temperatures, heat, and open and close motions. With the double seal, when one seal begins to break, the other can hold the line for a while. However, as the window ages its components begin to break down.

Other than old age, there are two additional factors that affect seal breakage:

  1. Water retention in the frame or improper drainage around the window
  2. Direct exposure to sunlight—the more sun your window gets, the more heat will build up causing the panes to expand, contract and eventually weaken

Once the seal is broken, moisture begins to form between the panes, giving your windows a milky, foggy look. In addition to condensation, there are other reasons to get your windows fixed.

Here are some additional reasons why you should replace your windows:

Reasons to Replace Windows with Condensation Infographic

Call a Professional to Fix Condensation Between Your Window Panes

Condensation in window

Fixing condensation between your window panes can be a tough DIY job. At Glass Doctor, we do our best to save the window and replace just the glass, saving you more money and creating a more eco-friendly home.

When moisture gets through the seal on glass enclosures and begins to build, call one of our certified professionals to replace the pane. They will clean the inside part of the window, remove any moisture, and replace new panes with stronger sealants that offer protection for years to come. We come to your location for a free consultation and provide an estimate within 24 hours.

Call Glass Doctor Today

If there’s condensation between the panes in your windows, find a Glass Doctor professional near you to correct the problem. We’re fast, professional and affordable. Call 855-603-1919 today.




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