This brochure summarizes key messages that the public needs to know in order to prevent and reduce the exposure to dampness and mould, and to remove potential mould once it occurs. Emphasis is put on the problem of excessive moisture, which is the root cause for problems with dampness and mould in indoor built environments. Further references and user guides on actions against dampness and mold in several languages are provided, and reference is made to an international list of agencies providing more detailed damp and mould support functions to the public. This brochure has also been produced in response to the WHO Indoor Air Quality Guidelines on Dampness and Mould.