Abstract: The carriage attachment includes a sheet metal frame bent to have a flat deck and angled splash guard. Two wheels are mounted on either side of the carriage frame. A spray nozzle is fitted underneath the carriage deck and a quick release coupling is used to connect the carriage attachment to the wand of a power washer. The wheels can be mounted to the carriage frame at different positions to adjust the height of the nozzle over the surface being cleaned. The carriage attachment allows the operator to maintain an upright posture while cleaning ground surfaces using a relaxed sweeping motion. The carriage attachment reduces operator fatigue by allowing the operator to simply guide the movement of the carriage attachment over the surface without having to stabilize the extension wand under the force of the pressurized water stream.