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When to Replace uPVC Door Locks If your upvc lock isn't locking or closing correctly, it may be time to replace it. To determine which type of lock you're using, look for a brand's name on the mechanism's faceplate. Change the lock on a door made of upvc is an easy job for locksmiths with experience, and can assist in maintaining the security of your home. It is essential to have the key measurements, like the PZ and screw-to spindle distance, in hand. Cost There are many reasons you may require repla