Mold in the bedroom – why does it appear and what can you do about it?

You like to spend the night in your bedroom and relax from the stresses of the day. It is a place to switch off and a balance to the stress of work and everyday life.

If you discover dark spots on the wall , this could indicate mold in the bedroom . Then the rest is over and you worry whether the mold will attack your lungs.

Why does mold settle in your bedroom and what can you do about it? Feel good again in a healthy and hygienic sleeping environment.

The reasons for mold in the bedroom are many. In most cases, the basis is excessive moisture. The mold spores need a moist environment to spread and thrive. High humidity or wet walls are therefore often the reasons why the mold spreads. But how can it come to this?


One reason for the high humidity could be found in the structural condition of the house . Defects can occur in both old and new buildings, which promote mold growth. A modern house is therefore not safe against mold in the bedroom. Specifically, the following flaws can be present:

In a new building, the drying of the building is insufficient so that the walls are still damp
Cracks appear in the masonry through which the moisture penetrates
The windows are insufficiently sealed
Water pipes are leaking
Formation of condensation

In a new building, check carefully whether condensation has formed on the windows. This is a clear warning that mold will appear over time.


Would you like to create a cozy atmosphere in the bedroom ? Then for many people plants are part of it. Plants in the bedroom convey a natural feeling and increase well-being.

However, they also contribute to the fact that the humidity increases. By watering and secreting the moisture above the leaf surface, the humidity in the bedroom increases . Therefore, you should avoid too many plants in a small bedroom.


In the cold season, the bedroom should be a warm retreat. You turn the heating on fully and avoid ventilating it so that the cold air from outside does not get into the bedroom.

Warm air is able to store more moisture. If you stop heating the bedroom during the night , the moisture will settle on the walls. It is therefore important that you ventilate regularly and that fresh air gets into the bedroom, even in winter .


Ventilation is an important factor anyway, which is why mold occurs in the bedroom. How is your ventilation behavior in summer and winter?

In summer you should avoid opening the window during the hot hours. The warm air enters the bedroom and the colder air has difficulty absorbing moisture. The moist air settles on the walls and the mold appears.

It looks exactly different in winter . If you tilt the window slightly and generally ventilate less, the warm air favors the humidity in the bedroom. Condensation can form, especially on the window, if the window is only tilted for a long period of time.


If you don’t have a suitable place for the fresh laundry, the bedroom usually has to serve. The laundry has a high level of residual moisture , which is released into the environment . Up to 3 liters can pass into the room air. If it is already relatively damp in the bedroom, you could now see by the window that condensation is forming there. It is better to hang the laundry somewhere else or ventilate sufficiently so that the moisture does not collect in the room.


You spend around 8 hours on the mattress per night. During sleep, you lose up to 1 liter of sweat in a normal night This collects in the bed linen and the mattress. If the mattress is not adequately ventilated, mold can form there. This can be recognized not only by the clear stains , but also by the strong smell of the mattress . Mold can also spread from the mattress in the bedroom if the conditions are suitable.


You have now learned a lot about why mold appears in the bedroom. But are mold spores also dangerous and can they harm your health ?

The answer is clearly yes!

The following symptoms are associated with mold spores:

Allergic reaction
respiratory symptoms
to cough
Digestive problems
Irritated eyes
skin rash
More common infectious diseases

Thus, the mold affects your quality of life in many ways. Your immune system is weakened , you sleep worse, and the long-term effects are devastating. If you notice mold infestation, you should immediately start removing it.

Children and allergy sufferers are particularly at risk . If children spend the nights in a bedroom that is infected with mold, permanent damage can occur. The risk of allergies increases and asthma could become permanent. Check therefore exactly the crib mattress and the baby mattress , whether they are affected by mold and pay attention to a hygienic sleep environment.


The mold in the bedroom cannot simply be accepted. It is a health hazard and should be removed as soon as possible. You can remove the mold with the following methods so that you can spend the night calmly again.


These two high-proof alcohols can be found in many households. Therefore, they are counted among the home remedies to fight mold. In practice, they prove to be effective and easy to use.

The alcohol is poured onto the appropriate surface. There it removes the moisture so that the mold no longer feels comfortable. It will recede and a renewed infestation should no longer occur with the right measures.


Various products are available in specialist shops that are specifically aimed at mold. Some products can be recognized by their distinct smell of chlorine . Others are based on hydrogen peroxide or ethanol.

These remedies should only be used if the mold cannot be removed with simple home remedies. Chemical removers are often associated with side effects such as skin irritation. They also represent a burden for the environment and should only be used sparingly . As a stronger alternative, if simple means do not remove the mold, they are still good to use.


Has the cause of the mold in the bedroom already been fixed? Then a simple superficial removal is advisable to reduce the burden.

You should pretreat the surface with a hairspray or spray adhesive . This ensures that the mold spores do not spread to all rooms, but only stay in the bedroom.

Then you grab a brush and rub the mold off the wall in the bedroom. Wear a respirator to avoid contact with the dangerous spores yourself. Then you have created a good foundation to keep the bedroom free of mold.


Mold in the bedroom is a nightmare that you don’t want to experience yourself. Follow the tips below to prevent mold from standing in the bedroom.


Ask yourself whether your ventilation behavior contributed to the mold infestation. If the room air is too humid, it is easy for mold to spread and will possibly spread throughout the apartment. Adjust your ventilation behavior to the respective season and the outside temperatures.

In winter you should only ventilate for a few minutes. Do not heat the bedroom too much so that the temperature difference remains manageable.

For the summer , you should ventilate the room for up to 30 minutes in the evening or at night. Then the outside air has already cooled down a bit and the fresh air creates a better atmosphere in the bedroom.

In spring or autumn, up to 15 minutes of burst ventilation is recommended. The colder it is, the shorter the ventilation should be.

Do the burst ventilation around two to three times a day to regulate the humidity. This is how you prevent the damp air and mold.


Especially in winter , the heating behavior is a factor that leads to mold growth. Do not overheat the bedroom and avoid large temperature differences in the apartment.

The optimal temperature for the bedroom is between 16 and 18 degrees Celsius. This makes the bedroom a little cooler than the living room. The lower temperature not only reduces heating costs, but also the risk of mold growth.


Have you already tried some measures and the humidity in the bedroom is still too high? Then a dehumidifier may be the last resort.

The small device is ideal for small bedrooms. These usually work quietly , so that you can sleep without any problems. Sometimes a model with one granulate will be sufficient.


A simple alternative to the dehumidifier is to set up bowls of salt. The salt has a similar effect to the granules that are used in the dehumidifier. It absorbs the excess moisture and thus ensures a better sleeping environment. The mold in the bedroom will hardly appear again. Make sure you change your salt regularly so it can do its job effectively.


Are your bed and closet right up against the wall? Then the air circulation is clearly restricted in this area If there are already problems with the mold, it will find perfect conditions behind the furniture. There, the reduced air exchange leads to the fact that the moisture collects and the spores find an ideal breeding ground.

Move the furniture in the bedroom about 3 inches away from the wall . Then there is better air circulation there again and you effectively prevent mold in the bedroom.


If you discover dark spots on the wall, your bedroom is likely to be ravaged by mold. Use the methods described here to combat the pathogenic spores to avoid long-term damage. Adjust your ventilation behavior and be careful not to overheat the room in winter. Then the mold is not given a foundation and you will enjoy the night completely relaxed.

Jamie Clark

Hello, I’m Jamie Clark, 32 years old, and I have been living in the USA for a few years.
Since I was a child, I have suffered from a house dust allergy, severely affecting me. I felt the effects both while exercising and while sleeping. Constant sneezing after getting up and difficult breathing were the consequences. The allergy has also developed into asthma, which is still a sporting restriction today.

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