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

As soon as you notice a dark spot, don’t wait for it to spread. The faster you act, the more you limit the damage.

Start by thoroughly ventilating the room, morning and evening, even if it’s cold. Ten minutes is enough to refresh the air and remove moisture. And if you’re in a room that’s often humid (bathroom, laundry room, etc.), this is even more important.

Next, you need to tackle the stains. A mixture of warm water and white vinegar can work wonders. For tougher mold, a little hydrogen peroxide can also be effective. But be careful: avoid using vinegar on natural stone or marble surfaces, as it could damage them.

Remember to move furniture away from the wall, even just a few inches, to allow air to circulate. You’ll see, it makes all the difference.

And if the air remains heavy or humid despite everything, consider installing a moisture absorber or a small electric dehumidifier. It can make all the difference, especially in small spaces.

Bonus tip: In winter, open the windows for just a few minutes in the morning and evening. This is enough to clear the condensation that builds up overnight.