How do you combat mold in a prefabricated house?

He stinks, is annoying and harmful: mold at the house. Everyone has probably "experienced" him before, but where does he come from? And above all: what can be done against mold in prefabricated houses? The following article provides answers to these questions and more information on the topic of mold.

How does mold develop in the house?

There are several factors that determine the formation of mold in the home: Firstly, rising energy costs mean that people are less ventilated to isolate the heat. This climate, which not only increases the heat, but also the humidity, provides an ideal basis for the formation of mold. Critical is an air humidity of more than 60%.

Since cellars are also relatively popular in prefabricated houses, special care must be taken here: especially on warm summer days you should not open the cellar windows to prevent the heat from entering.

How do you combat mold in a prefabricated house?: house

However, the most important source of moisture is man himself: in a four-person household, the human body alone produces a total of 12 liters of water vapor per day. This should be handled correctly: Ventilation helps here, as the fresh air penetrates so quickly. Ineffective, however, are constantly tilted windows; they do not generate enough heat exchange and waste energy.

Is there a special danger in prefabricated houses?

Of course, mold can spread more easily if the structure of the house is "leaky". In prefabricated houses, as they were built 50 years ago, there is of course a greater risk of mold than in today's solid houses due to the "light" construction.

However, the trend in prefabricated houses is becoming more and more massive, which is why the mold risk in modern prefabricated houses is just as low as in massive buildings.

Is there anything else to consider?

One of the most common reasons for mold proliferation is building defects: so if you have the feeling that mold is spreading, have your prefab house inspected for construction defects such as cracks.


The following overview summarizes the reasons why the white horse spreads once again:

  • Too high humidity
  • Construction defects
  • Wrong airing
  • Heat dissipation in the basement

Tips & Tricks

Use a thermometer with humidity reading; so you can avoid the spread of mold in advance and keep the critical 60% limit in mind.

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