ᐅ Kallax in the bathroom is developing mold – what can be done?
Created on: 22 Apr 2023 08:37
J
Jagu31
Hello everyone, I have the following issue in my bathroom and hope someone here can provide helpful advice: I am using an IKEA Kallax shelf unit for storage and organizing towels and personal care products. However, despite regular ventilation and cleaning, I have noticed the beginning of mold forming on the inner sides of the Kallax.
The room is not very large, often humid after showering, and I suspect that the high humidity combined with the lack of airflow behind the shelves is contributing to the problem.
My question is: How can I remove the mold from the Kallax in the bathroom and protect it permanently? Are there any special treatment methods or alternatives that handle moisture better? I want to avoid mold returning, as the shelf unit is otherwise very practical.
Thank you in advance for all your experiences and tips!
The room is not very large, often humid after showering, and I suspect that the high humidity combined with the lack of airflow behind the shelves is contributing to the problem.
My question is: How can I remove the mold from the Kallax in the bathroom and protect it permanently? Are there any special treatment methods or alternatives that handle moisture better? I want to avoid mold returning, as the shelf unit is otherwise very practical.
Thank you in advance for all your experiences and tips!
I would like to briefly question whether we are sometimes too quick to use the term "mold" without sufficient clarity on whether it is truly a health-hazardous fungus or merely a harmless superficial moisture stain.
It is important to first determine the extent of contamination, whether material pores are deeply affected, and whether it is an active mold colony. Otherwise, one can easily get caught in a never-ending cycle of cleaning and protective measures without actually solving the problem.
Furthermore, I believe it is essential to analyze the factors causing moisture more closely — ventilating windows alone is often not enough if, for example, incorrect ventilation habits or showering without proper extraction keep indoor humidity high over time.
Therefore: Since when exactly has the problem been visible? Are there specific condensation spots in the bathroom? Are there perhaps structural issues? Only then can a permanent strategy be developed.
It is important to first determine the extent of contamination, whether material pores are deeply affected, and whether it is an active mold colony. Otherwise, one can easily get caught in a never-ending cycle of cleaning and protective measures without actually solving the problem.
Furthermore, I believe it is essential to analyze the factors causing moisture more closely — ventilating windows alone is often not enough if, for example, incorrect ventilation habits or showering without proper extraction keep indoor humidity high over time.
Therefore: Since when exactly has the problem been visible? Are there specific condensation spots in the bathroom? Are there perhaps structural issues? Only then can a permanent strategy be developed.
I can only support sifopes’ approach – a precise root cause analysis is essential.
Practically, I recommend: If mold is present, always work with appropriate protective measures (gloves, mask) and clean thoroughly. Using vinegar or common commercial mold removers is useful, but never use chlorine-based products as they can damage materials.
Regarding ventilation: Check the humidity in the bathroom with a hygrometer, especially after showering. Values around 60% are still acceptable; persistent humidity levels over 70% significantly encourage mold growth.
About the shelf: As Domau0 said, create some space between the shelf and the wall. If the shelf base is directly on the floor, use small feet or spacers to prevent moisture from accumulating.
And: Consider whether a dehumidifier is a worthwhile investment. This helps prevent the problem from becoming permanent.
Practically, I recommend: If mold is present, always work with appropriate protective measures (gloves, mask) and clean thoroughly. Using vinegar or common commercial mold removers is useful, but never use chlorine-based products as they can damage materials.
Regarding ventilation: Check the humidity in the bathroom with a hygrometer, especially after showering. Values around 60% are still acceptable; persistent humidity levels over 70% significantly encourage mold growth.
About the shelf: As Domau0 said, create some space between the shelf and the wall. If the shelf base is directly on the floor, use small feet or spacers to prevent moisture from accumulating.
And: Consider whether a dehumidifier is a worthwhile investment. This helps prevent the problem from becoming permanent.
Jagu31 schrieb:
The mold mainly appears on the inside back of the lower compartments that are directly against the wall.Great tip! I’ve experienced the same issue with my shelf when it was placed directly against the wall – moisture just gets trapped, and the air can’t circulate.
Kallax shelves are actually quite sturdy, and if you spray the back panel with a water-repellent spray, the surface holds up pretty well. Make sure to treat every little gap, including edges and corners, since moisture tends to accumulate there fastest.
Good luck, you can do it! 🙂
I would like to add the following: The cause of mold in such cases is always multifactorial. In addition to a lack of air circulation, temperature differences and the dew point play a crucial role. When warm, moist air meets a cool surface, condensation occurs, which allows mold growth.
Kallax shelves, made of MDF, are inherently not very moisture-resistant because they are not impregnated. This means even short-term exposure to moisture can damage the surface and cause the material inside to swell. Simply removing the mold is then not sufficient if the underlying causes are not addressed.
Therefore, I would recommend the following sequence:
1. Measure the humidity level (using a hygrometer)
2. Ensure sufficient ventilation and temperature equalization (ventilate by opening windows briefly, use an exhaust fan in the bathroom, or a dehumidifier if necessary)
3. Move the Kallax slightly away from the wall, preferably with spacers
4. Thoroughly remove the mold with a fungicidal agent, then repair the surface with a water-repellent paint or impregnation
5. If the material is already damaged, consider replacing the back panel or sides
This is just an additional thought to avoid only treating symptoms without addressing the root cause.
Kallax shelves, made of MDF, are inherently not very moisture-resistant because they are not impregnated. This means even short-term exposure to moisture can damage the surface and cause the material inside to swell. Simply removing the mold is then not sufficient if the underlying causes are not addressed.
Therefore, I would recommend the following sequence:
1. Measure the humidity level (using a hygrometer)
2. Ensure sufficient ventilation and temperature equalization (ventilate by opening windows briefly, use an exhaust fan in the bathroom, or a dehumidifier if necessary)
3. Move the Kallax slightly away from the wall, preferably with spacers
4. Thoroughly remove the mold with a fungicidal agent, then repair the surface with a water-repellent paint or impregnation
5. If the material is already damaged, consider replacing the back panel or sides
This is just an additional thought to avoid only treating symptoms without addressing the root cause.
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