If your walls are turning black in a corner, it’s no accident: find out what it really means (and how to fix it)

If you see a dark patch forming, it’s best to act fast. The quicker you respond, the less likely the problem will spread.

Start by airing out the room thoroughly in the morning and evening—even during winter. Just ten minutes of fresh air can drastically reduce humidity levels.

Then move on to cleaning the mold. A mix of white vinegar and warm water can work well for surface stains. For more persistent spots, hydrogen peroxide can be effective. However, be cautious: don’t use vinegar on natural stone or marble, as it can cause damage.

Make sure to move furniture a few inches away from the walls to allow air circulation. This small change can make a big difference.

If the room still feels damp, consider using a moisture absorber or a small electric dehumidifier, especially in areas like laundry rooms or bathrooms.

Preventing Mold from Returning

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