Common lock faults include a key that sticks or will not turn, a loose handle or knob, a latch that does not catch and a deadbolt that is hard to throw. Say which of these you notice and whether it happens every time or only sometimes.

Some faults start with the door rather than the lock. If a deadbolt turns smoothly while the door is open but binds when it is closed, the bolt is often catching on the strike plate, and that is worth mentioning when you call.

A brand name on the lock and the moment the problem began, such as after a new key was cut or the door was adjusted, help the conversation. You do not need to take the lock apart before calling.

Repair suits hardware that is sound apart from a single fault. Replacement is worth discussing when a lock is damaged, badly worn or no longer secures the door. Confirm the proposed scope and price before agreeing to work.

Shop hours are Monday to Saturday, 9am to 5pm, closed Sunday. If the door cannot be secured right now, say so when you call so the team understands the urgency.