Last updated on 15 August 2026
The windows are cleaned by an external party. The windows are cleaned at fixed intervals throughout the year (main entrances 12x per year, façades and glass partitions 3x per year).
External inspectors check and monitor the quality of the services provided. Window cleaning is carried out in accordance with established standards and procedures. These cleaning activities, which are scheduled throughout the year, are partly dependent on the weather conditions. Shortly before they start work in a given area, the window cleaners inform the staff concerned. In the case of confined spaces and laboratories, the contacts in question are informed well in advance.