A system for applying working equipment onto an external wall of a structure. One system comprises a suspended platform anchored to the structure, operably vertically moveable at a constant speed along the external wall; and a positioning system arranged to determine and control a predefined motion pattern of the working equipment relative to the suspended platform, the positioning system mounted on the suspended platform. The predefined motion pattern is selected such as to allow continuous and uniform application of the working equipment horizontally and vertically onto the external wall during the vertical movement of the suspended platform along the external wall. The predefined motion pattern comprises a diagonal movement comprising a vertical component and a horizontal component, wherein the vertical component is equal and opposed to the vertical movement of the suspended platform.