Methods and apparatus are provided for a system for applying a fluid chemical treatment to a vertical column. In one embodiment the system includes a frame configured to generally surround the column, with a substantial gap between an inner surface of the frame and an outer surface of the column. The system may further include a centering guide on the inner surface of the frame, and an array of fluid spray nozzles connected to a pressurized fluid chemical source, and arranged to apply a uniform spray coating to the column. A mobility system vertically translates the frame along the column in a level orientation while fluid chemical is being applied.