 Windows DOUBLE GLAZING FAILURE
WINDOW GLASS FAILURE The most common problem with modern windows is the failure of the thermo sealed, insulated, double glazed glass unit. The most common signs that the unit has failed are: Condensation is visible between the two (inner and outer) panes of glass. It looks like a white powdery substance is coating the inside of the window. The windows have a foggy appearance. There appears to be a scum on the window that cannot be washed off. If the window glass appears to have one or more of the above conditions, it has probably failed and will need replacing. Depending on the brand of window, it may be possible to replace the glass unit by un-screwing the corners of the sash, releasing the damaged glass and inserting the new one. However, on welded vinyl frames, it is impossible to remove the glass and a new sash has to be ordered. On these windows, there is usually a number or small tag/sticker on the top or side of the sash (the part of the window that goes up and down) with a code number on it. Using this number you should be able to order a replacement glass and frame without the necessity of having the manufacturer visit the home to measure for a replacement.
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