Tilt & slide wooden doors found in many homes around Rotherhithe SE8, London rely on heavy-duty wheel runners to support the weight of the door.
Over time, these runners wear out or break, causing the door to become stiff, misaligned, or unsafe to operate.
Typical signs include dragging on the track, difficulty sliding, or the door dropping on one side.
The correct solution is to remove the door, replace the failed wheel runners, and realign the system.
Leaving worn runners unresolved can lead to further damage to the door frame, track, and locking hardware.