
Why Locks Seize, Jam or Stop Turning — and When Lock Repair Is the Right Answer
A lock rarely fails without reason. The most common causes we find in Beckenham properties are internal corrosion, dried-out or contaminated lubrication, worn tumblers or levers that no longer align with the key's cuts, a loose or misaligned door that puts the bolt under stress, and broken springs inside the mechanism. uPVC door lock repair Beckenham calls make up a significant portion of our workload, because multipoint locking systems — the type with several hook bolts and rollers running up the full height of the door — are sensitive to door alignment. When the door drops even a few millimetres on its hinges, the gearbox inside the lock has to work against resistance every time the handle is lifted, eventually causing the mechanism to seize.
Five-lever mortice deadlocks, Yale-type nightlatches and rim locks each fail in their own characteristic ways. A mortice lock repair often involves replacing worn levers or a broken bolt follower, while rim lock repair typically means addressing a faulty cylinder or a snapped internal cam. In all cases, our first step is diagnosis — taking the lock apart, identifying the exact point of failure, and explaining our findings clearly before any repair or replacement takes place. Where the internal parts are intact and the mechanism is simply dirty or dry, a professional strip, clean and regrease can restore full function without the cost of new parts.




