Why a Fire Door Frame Can Move Even When the Door Hinges Haven’t

When a fire door starts binding, dropping or developing uneven gaps, the hinges are often the first thing people look at. That makes sense. The hinges connect the door to the frame, so if the door has moved, surely the hinges must have moved too. But when the door gap has changed, it is worth checking the fire door frame and the gap pattern before blaming the hinge. Not necessarily. The hinges may still be firmly fixed to the door and frame while the frame itself has moved within the structural opening. See the Fire Door Frames Explained guide for the wider frame geometry context. That distinction matters because the frame, its fixings and the hinges all work together to control the relationship between the door leaf and the frame. If that relationship changes, the door can start touching the…