Worldwide, there is an increasing demand for testing the air tightness of high-rise buildings. Measurements on such buildings are still pioneering work. For the first time in Europe, a BlowerDoor test in a 125 m high building was carried out in 2021. Special challenges included establishing a uniform (fan generated) pressure distribution in the building and dealing with the high and fluctuating natural pressure differences at the building envelope due to stack effect and wind. For an exact overview of the pressure distribution during the measurement, additional differential measuring points were distributed in the building envelope.

Find out how careful planning, preparation and exchange between experts from three countries made this challenging measurement a success: https://www.blowerdoor.com/services/newsletter-pages/high-rise-building?no_cache=1#c4830.