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Double Glazing Locks Repair If a double-glazed window won't close it causes draughts and allows valuable heat to escape. It also weakens your home security barriers and puts you at risk of burglary. Over time, double glazed window hinges, handles and seals can be damaged. If this is the situation, it can affect the performance of your windows and invalidate any warranties you may have. Locks that aren't working Many people put anti-burglar devices on their main doors and gates however, they forget that wi