Preventive actions against mould in attics

  • Keep the space dry! The drier the climate, the less risk there is of mould or dry-rot.
  • It is best not to install an exhaust fan in the loft, as this can create negative pressure and draw up damp internal air from the living area to the attic.
  • If you decide to install a dehumidifier, you must make sure that you seal the loft, so that no outdoor air leaks in.
  • The dehumidifier should also be fitted with a humidistat. The humidistat starts the dehumidifier when the humidity gets too high, and turns it off when the humidity has dropped to an acceptable level. This saves energy.