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Is It Time For A Blown Double Glazing Repair? Condensation can be a sign that your double glazing has broken. This occurs when the seal between two panes is broken, allowing inert gases to escape. Repairing your double-glazed windows is a must. It will not only help you save money and cut down on noise from outside however, it will also restore the insulating qualities of the window. Damaged Seals The window seals in a double-glazed system are responsible for creating an airtight and watertight. T