Norway First to use drones to clean the Opera House in Oslo.
The Norwegian National Opera & Ballet, known as the Opera House (in Oslo), has made history as the world’s first opera house to be cleaned by drone. The work was carried out by KTV Group eastern department in collaboration with ISS Facility Services Norway, marking a groundbreaking shift in how large and complex buildings are maintained.
Using the KTV Working Drone, both the marble and glass façades were safely and efficiently cleaned, without the need for scaffolding or lifts. The drone is guided by advanced sensors and navigation systems, ensuring millimeter precision and a level of quality previously unattainable through manual cleaning.
The Opera House’s signature white marble was washed using KTV Group’s Pure water-method, which uses clean, filtered water without chemicals. This method removes dirt and pollution gently while preserving the natural brilliance of the marble.
The work was carried out during hours that did not affect visitors and also included thorough cleaning of the interior glass surfaces. The result is an Opera House that once again shines in its full architectural glory, clean, clear, and radiant.
The project demonstrates how Norwegian technology and innovation are leading the way globally and confirms KTV Group’s position as a pioneer in modern façade cleaning.
KTV Group, established in 1992, delivers innovative and efficient solutions for cleaning and surface treatment. The company is ISO certified and operates with the Bluetag documentation system in accordance with ISO 9001, ISO 45001, and ISO 14001.


