Damp house and health

People who stay in a damp home have approximately 25 percent more health complaints than other homes. House dust mites feel comfortable at an air humidity of 45 percent. A damp home is also more likely to cause nasal colds. Sometimes people are not aware of a home that is too humid.

Damp house

A damp home causes damage to the home. Think of mold spots, plaster that is crumbling and wallpaper that is peeling off. But a damp home also brings health problems. People who stay in a damp home have approximately 25 percent more health complaints than other homes. About 20 percent of homes in the Netherlands and Belgium are too humid.


House dust mites play an important role in asthma. House dust mites feel comfortable at an air humidity of 45 percent. At an air humidity of 55 percent, dust mites begin to multiply, creating even more dust mites within the home. Especially when it is colder in the house, the air becomes saturated with moisture more quickly. So it is not the moisture that causes respiratory problems, but the organisms that thrive in the moist air. To give these organisms no chance, the humidity in the home will have to be reduced.

Nasal cold

A damp home is more likely to cause nasal colds. Once again, it is not the moisture that is the culprit, but the organisms that love moist environments and can multiply well here. This makes it easier for a nose cold to develop. But bronchitis can also develop more easily in a humid environment. Anyone who suffers from colds or bronchitis should take a good look at the humidity in their home. Other causes can also cause a runny nose or bronchitis

Silverfish allergy

A silverfish is not a fish but an insect. They are found in damp corners in kitchen cupboards, behind cupboards and in wet paper. People with an allergy to silverfish exhibit the same characteristics as people with asthma. The allergy mainly manifests itself with shortness of breath.


Rheumatism is not caused by humidity in the house, but it does aggravate the complaints. People who live in a damp home and suffer from rheumatism often experience that the complaints worsen. Joint complaints, which play an important role in rheumatism, often become worse, causing more pain and difficulty in movement. It is therefore important, especially for rheumatism patients, to reduce the humidity in the home.


Mold also grows in a damp home. Inhaling mold spores can cause various diseases. This is manifested by breathing problems but also by skin problems. Children who are exposed to mold a lot are more likely to develop some kind of allergy later on. Mold grows on walls, floors and ceilings. But also on edges. The fungus attaches to organic material.


Eczema is an inflammatory reaction of the skin. This can be caused by, among other things, house dust mites. And dust mites do well in damp homes. It is therefore also good for people with eczema to pay attention to the humidity. However, too low humidity in the home worsens the eczema symptoms of dry eczema.


The most important thing in a damp home remains: ventilation. The supply of fresh air reduces the moisture content in the home. Cellars in particular are an ideal place for mold, and moisture can creep further up through the cellar. Airing for fifteen minutes every day helps a lot. Furthermore, do not close ventilation grilles such as those found in basements and the underside of walls.