Why Can a Repaired Fire Door Fault Keep Returning?

When the same fire-door fault keeps coming back, I stop treating each visit as a separate repair. The recurrence is itself evidence. Look at what was actually changed Suppose a door keeps catching on the lock strike plate. The strike gets adjusted. The door works for a while. Then the same problem returns. That should make you ask what moved after the repair. Was the hinge already worn? Was the frame moving? Was the fixing loose? Was the original gap wrong? Was the latch already damaged from repeated contact? Compare before and after Take photographs before repair. Record the gaps. Record the fixing condition. Record where the contact marks are. Then compare the door after the repair. A repair that removes one visible symptom without changing the underlying movement is not a permanent repair. Repeated adjustment is another clue If…