No chance for humidity and mould - protection of the building fabric
Dry heating air can quickly cause a cold. However, there is a risk of mould and spore growth if the air is too humid. From a medical-domestic point of view, the relative humidity of the room air should be at least 30% and no more than 60%; 40% to 50% is ideal. Already at 70% relative humidity, there is a particular risk of mould formation and hence also a risk to the building fabric! This humidity must be removed from the flat by all means, since it will otherwise condense and settle, for example, on the walls as water. Moisture initially causes mould and then spores. This damage is accompanied by an increased risk of respiratory illnesses, asthma, general allergies and mite and mould allergies. The building fabric is also affected by the moisture damage caused.
How can you prevent such a development? By ensuring the controlled removal of humid and used up air - at all times, even when the residents are not at home. The best protection for residents / tenants and for the building fabric.
See also Protection of the building fabric
Detailed information