Balconies located close to a street or facing an open water surface can accumulate salt mist residue, road dust or fine particle matter on the glass surface in a shorter time, and the rhythm and method of washing regular indoor balconies may not match. On top of basic inner and outer two-side glass handling, this package adjusts preparation method and rinse passes according to the surface attachment features confirmed during assessment, and includes fine sand or particle matter that may accumulate in frame tracks as a focus of clearing. Reference price range: specialized washing for this scene on a single balcony is about EUR 80-160, depending on attachment level and balcony size. During custom communication, the resident needs to state the approximate orientation and nearby environment of the balcony, such as whether it directly faces an open surface or is on one side of a traffic road, and the provider judges the work emphasis from this. The deposit is paid after the specialized plan is confirmed, and the balance is settled at completion acceptance. The work scope and improvement boundary are stated honestly at the quote stage, and no statement beyond the ability of regular work is made about the removal degree of specific attached matter.