Most high-rise buildings in Johannesburg do not have a permanent cradle system. Rope access covers every face of a building without track, motor or scaffold, and can be combined with other facade work in the same mobilisation.
Permanent building maintenance units (cradle systems) are expensive to install, expensive to certify, and absent from the majority of high-rise buildings built in South Africa before 2000. For buildings without one, the options are scaffold (expensive and disruptive), a boom lift ( limited by height and ground conditions), or rope access. For most high-rise window cleaning in Johannesburg, rope access is the practical and cost-effective default.
Technicians rig from existing or installed roof anchors and work down each face of the building in systematic passes. Each window is cleaned from the level of the glass rather than from a platform at distance, which gives better contact and better results on recessed or angled glazing. Once a face is complete, the team moves laterally and repeats. A typical multi-storey building can have all faces cleaned within one to two days without any disruption at ground level.
Environmental soiling (dust, bird deposits, algae) is removed with standard squeegee and purified water methods that leave no residue. More stubborn deposits require a different approach: mineral scaling from hard water runoff needs an acid-based treatment; silicone overspray from recent sealant work needs a solvent-based product; paint splatter from adjacent facade work needs mechanical or chemical removal specific to the paint type. The cleaning method is matched to the deposit, not applied as a default.
Window cleaning is routinely added to an existing waterproofing or painting mobilisation at a fraction of the cost of scheduling it separately. The risk assessment, method statement, roof anchor checks and on-site setup are already committed; adding a cleaning pass costs far less than a standalone project requiring all of that again.
Managing agents and body corporate trustees typically budget for window cleaning on an annual cycle. Sky Rig quotes a fixed per-clean price for the full year's schedule, structured for trustee sign-off, with nothing added at invoice stage. Scheduling is arranged around the building's occupancy and residents or tenants receive advance notice before each clean. Where other facade work such as waterproofing or painting is already scheduled, adding a window clean to the same mobilisation costs a fraction of what it would as a standalone project, making it straightforward to include in the same trustee resolution.
Send us the building details and we will quote a fixed price per clean, a recurring schedule if needed, and flag anything worth combining in the same mobilisation.
By rope access. Technicians abseil from roof anchors and work across each face of the building systematically, cleaning each window panel in reach before moving across or down. It requires no permanent equipment on the building, no track or motor system, and no scaffold around the perimeter.