Tilt and Slide running system jamming during sliding operation in Regents Park area of London
The running system for these tilt and slide doors are identified as Hautau runners. Whilst one of the better running systems, they are prone to premature wear if the doors are used incorrectly, either dragged or being forced into the closed or open position.
The runners comprise the wheels which sit on the track, together with swing arms that traject the door into a parallel position to the track.
Due to deterioration, the runners are no longer holding up the weight of the door and it is dragging along the floor.