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Upvc Door Lock Replacements Many upvc doors have multipoint locking systems that secure the door at several points by turning the key. This increases security and energy efficiency. Contact a locksmith if you are having issues with your upvc locks. A professional locksmith will have the equipment and knowledge required to disassemble the lock and clean any dirt that has built up. They can also apply lubricant to ensure smooth operation. Cylinder These issues can be incredibly difficult, whether it's a