Information for building professionals
If radon protection is already taken into account during the planning and construction of new buildings and extensions, it is usually easy and inexpensive to implement. The same applies to refurbishments where new horizontal components in contact with the ground are built down to ground level (foundation level).
Radon is a radioactive noble gas and is produced by the radioactive decay of uranium in rocks and soil. Radon is invisible, odorless and tasteless. The noble gas can enter buildings with the soil air. Outdoors, radon is harmless to health, whereas it can accumulate in buildings and pose a health risk. Radon is one of the most common causes of lung cancer after smoking!
You can find more information on radon at