General renovations offer a good opportunity to reduce elevated radon concentrations indoors at low cost. It is therefore particularly important to carry out a radon measurement before a general refurbishment. In the event of an increased radon concentration, you can plan radon protection measures at the same time as the general refurbishment.

Thermal renovations change the tightness of the building envelope (e.g. by installing tight windows and external doors) and can lead to a significant increase in radon concentration. It is important to consider possible effects on the future radon situation in the building as early as the planning phase.

Further information can be found here.