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Double Glazing Unit Repair If you have double-glazed windows that appears cloudy or misty and isn't able to be cleaned, it has probably been "blown". This occurs when the gap between the window panes is widened due to the degrading of the window seals. It is cheaper to replace the double-glazed unit instead of the gasket seals. Seals The window seal (also called the window gasket) is responsible for sealing the air between the two panes of your double-glazed windows. This will stop cold drafts from enter