Wall lifelines vs roof-edge lifelines: which to specify
Both are horizontal lifeline systems with the same core technology, but they differ in mounting position and use case:
Wall-mounted horizontal lifelines install along a wall or facade at waist or shoulder height. Used when the worker accesses the SIDE of a building – facade work, window cleaning, parapet maintenance, swing-stage operations.
Roof-edge horizontal lifelines install along the roof edge or just inside the parapet. Used when the worker walks on the ROOF SURFACE and the cable runs alongside.
Many buildings deploy both: a roof-edge lifeline along the perimeter for roof maintenance access, plus a wall-mounted lifeline along the facade for window cleaning and facade work that happens below the roof level. Specifying both at the same time (during facade construction or first roof installation) is significantly cheaper than retrofitting one later.









