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UPVC Door Lock Replacement UPVC doors are an excellent security measure against burglaries. They do have their limitations, but they can be overcome with the installation of a deadlock. It's time to replace the lock's barrel if your uPVC door lock feels a bit loose. This simple DIY project can enhance the security of your home and improve its appearance. Removal of the old lock cylinder If you're noticing that your front door feels flimsy when you lock it, or your key struggles to turn, you may have a da