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UPVC Door Locks Replacement If your uPVC door is not locking properly, or the key is constantly turning inside the lock, you may require replacing the door locks made of uPVC. Before you start the repair work, follow the manufacturer's instructions and securely fix the new multipoint lock mechanism into the uPVC door panel. Identifying the Issue Upvc door locks are well-known for their strength and security, but they can be susceptible to problems as time passes. These problems can range from min