In brief

It is important to remember that the majority of excess atmospheric moisture within a home is caused by our lifestyle. The level of moisture in the air is the sum of external air plus the moisture generated in the property.

In the majority of cases the building is able to buffer these times provided they are kept very short.  Some modern materials, which make up our home reduce its moisture buffering ability.

Severe condensation is caused when the interior  atmosphere starts to get out of balance and humidity levels remain high (greater than 69%RH) for long periods of time. The rapid rise in the relative humidity is often triggered by low surface temperatures.  

The young, elderly or anyone with a compromised immune system, should avoid areas affected by mould growth or dampness. It is not a good idea to sleep in any room affected by mould growth unless the area has been properly cleaned.

To minimise condensation maintain the ambient temperature above 15oC and ideally between 18-21oC  also avoid heating the property for short periods as this will reduce its moisture buffering ability.    When showering or bathing keep the door shut and the area heated and ventilated.


 Remember balanced heating and ventilation especially at production points will lower the level of airborne moisture in your home.

ADPC Property Care

Condensation in Dwellings