What Causes Window Condensation Between Panes?

Window condensation between panes is a problem that commonly occurs with double pane windows. This can be caused by a variety of factors. When condensation occurs, it is because the window panes are not completely sealed. There may be a small hole in the seal between the 2 windows that allows moisture can then get inside. The moisture can come from many different sources. For example, it could come from just a naturally high moisture content in the air or it could be caused by a temporary increase in air moisture from taking a shower or cooking near the window.