Have you ever tried to clean a window that just won’t get clean? It may not be your fault. Homes built from the early 80’s to present time have double or even triple pane glass. This type of window is more energy efficient but there are a few drawbacks. If one side of the glass breaks you must replace the entire glass insulated unit which consists of 2 layers of glass permanently sealed and separated by a spacer and sometimes charged with a gas usually argon. This glass must be cleaned a special way and assembled in a specialized clean environment. Expect to pay 2 or 3 times as much as you did with the old single pane glass for that broken window. Another big problem with this type of window is the seals that bond the 2 pieces of glass together eventually fail; climates with extreme temperature differences like what we experience here in the valley only speed up the process. Windows that are facing the sun all day such as southern exposed windows are the quickest to fail.
The seals are leaking on this window pane. The condensation you see is on the inside of the double pane glass. This usually happens after a good rain. Eventually the moisture will dissipate however staining will occur on the inside of the glass. Unfortunately the only way to correct this problem is to replace the glass.
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This is a more severe case of a leaking seals and staining that has accumulated for years. Again, the only option is replacement of the window.
Rust has developed on this pane. Rust can even form on the glass itself due to the reflective low E coating.
Have you experienced issues with your windows?
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