Foggy windows, or windows with condensation and moisture, are mainly due to the failure of the Silica desiccant materials in the thermal window cavity to soak up moisture that naturally builds over time from Solar Pumping. Windows are manufactured with a specific moisture combination life span (i.e., 5 years, 20 years etc) that is based on solar pumping activity, which causes foggy windows.
Foggy windows point out that the moisture captivating desiccant materials are fully soaked. From this point on wetness accumulates and circulates between the glass window panes, which can cause permanent glass damage if not repaired quickly. Therefore, a foggy window indicates the end to a window’s life cycle.