https://www.repairmywindowsand....doors.co.uk/burgess-
Replacing a UPVC Door Lock Mechanism Replacing uPVC door lock mechanisms can be a challenge if you do not have the right tools or knowledge. Before beginning any work, it's crucial to be aware of safety precautions. All locks require regular cleaning and lubrication to operate smoothly. If you own a uPVC lock that is difficult to open or the key is turning inside the handle, it may be time to replace the lock cylinder. Lock Cylinder A lock cylinder is the part of a upvc door that lets you lock and un