What is a failed insulated glass seal and why is it considered a defect?
• An insulated glass seal is a window made up of two or more layers of glass held together in a track or frame. A gasketed channel separates the two pieces of glass, and the space between the panes is filled with a moisture-free, inert gas such as nitrogen. When a gasket fails, the inert gas between the panes escapes to the exterior of the window and regular, moisture-laden air is drawn into the space. This does not greatly affect the insulation value of the window but will affect the visibility through the glass. When this happens, the window will look dirty or foggy and you will not be able to clean it off. This is because the fogged or filmed surface will be between the two panes of glass and not on the outer surfaces. If there is a lot of moisture in the air you will also see condensation on the interior of the window. • There is no warning device on a window or door that will indicate when the seal will fail. Most window manufacturers have some kind of warranty that will cover pos
