System and method for building façade cleaning and painting with a dual cable-driven robot

A robot system for maintenance of a building façade with an irregular façade surface comprising:

• a platform cooperating with a least four pairs of cables for positioning the platform at a distance from a building façade;
• at least one robot arm situated on the platform, the at least one robot arm including an adaptor positioned at a distal end thereof for holding and manipulating a building façade maintenance tool;
• an actuator for driving the at least four pairs of cables to move the platform to any arbitrary position along the building façade;
• a controller cooperating with the actuator for instructing the actuator to drive the at least four pairs of cables and for controlling movement of the at least one robot arm, wherein driving the actuator and movement of the robot arm is coordinated by the controller such that any position deviations in the platform are compensated for by positioning or movement of the robot arm.