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How to Change a Double Glazing Door Lock If you've broken a window lock, replacing it is a fairly simple DIY project. To ensure that your double-glazed windows are secure and secure, you need to follow the correct steps. This example estimate covers the basic tasks that are performed in easily serviceable conditions by trade professionals, using standard, in-stock materials and equipment. Your actual costs will vary. How to do it Window locks are frequently used and they wear out over time. This could lea