How to clean damp walls

How to clean damp walls. Discover these simple tricks to get rid of moisture stains.


  • Why do damps come out of the walls?
  • Tricks to clean the humidity of the walls of a building
    • Vinegar
    • Peroxide
    • Sodium bicarbonate
  • How to clean dampness from walls: prevention

How to clean damp walls. Discover these simple tricks to get rid of moisture stains.

The atmospheric conditions of each city or the architectural conditions of the building can lead to the appearance of unsightly and unpleasant damp spots on the walls.

Black mold can end up appearing because of excess moisture. Its appearance ‌does not affect only in an aesthetic sense, but it is detrimental to people’s health. The most normal thing is that mold appears on the interior walls or ceilings of the building that face the outside, but there is a way to solve this problem.

At SCS Group Integrated Services we offer a comprehensive building cleaning service, and we are used to cleaning damp stains, so today we want to explain to you how to clean dampness from walls in a simple way. Here’s what you need to know! 

Why do damps come out of the walls?

Damp stains can come out for different reasons, the most common are:

  • When a crack arises within the construction or a break in an internal pipe, we can generate accidental moisture in areas of supply pipes or drains. For this reason, the water concentrates at different points and generates several damp spots, both on the wall and on the ceiling. The first solution would be to repair the fault, let the moisture dry and proceed with its repair, in those cases where a simple stain does not occur.
  • When moisture appears in the lower areas of the walls, it is called rising dampness, and it usually appears especially in outdoor areas, such as in gardens or patios. The reason is the absorption of water after rains or irrigation and its accumulation.

Tricks to clean the humidity of the walls of a building


Apple or white vinegar is one of the star products for cleaning damp walls. To clean a damp stain, you just have to fill a spray bottle with vinegar and spray directly on the areas of the wall where the mold is found. This direct application is the most effective way for its removal.

Then we must leave it to act for a couple of hours. After this time, and with the help of a brush, we rub the areas with moisture. We will see how the mold disappears from the wall.

To soften the smell of vinegar, you can add a few drops of essential oil.


We can find other remedies on how to clean the dampness from the walls in the medicine cabinet. Hydrogen peroxide is another of the best cleaners for mold.

To clean the damp stain, use 3% hydrogen peroxide. Like vinegar, we will have to spray directly on the surface where the stains are found. We wait about 10 minutes for it to take effect.

When this time has elapsed, we take a cloth, moisten it, and we will only have to rub it on the surface to remove the stains.

Sodium bicarbonate

Baking soda is another natural product with high acid-neutralizing properties, so it will be relentless in saying goodbye to damp stains, also eliminating any remaining unpleasant odor.

To do this, mix the baking soda with water in a container and spray the mixture on the wall. Let it act for a few minutes and then rub it with a damp cloth to remove the remains.

How to clean dampness from walls: prevention

In order not to have to resort often to the search for how to clean the dampness from the walls, it is important to know a series of tricks to prevent the appearance of mold. The main thing will be to control the humidity. Some tips that can be put into practice are:

  • Regularly ventilate all areas where moisture is found.
  • With areas that are more difficult to ventilate, you can use air conditioning in summer and dehumidifiers in winter.
  • We can also protect walls We can also protect 
  • Walls We can also protect
  • Walls with anti-mold paint.
  • Regularly clean the areas where mold grows most quickly.
  • Resort to a thermal insulation treatment for the walls. In this way, it is possible to isolate the adequate temperature inside, avoiding contrasts that could cause the appearance of humidity.

We hope this article has helped you learn some tricks on how to clean dampness from walls. If you want to discover more cleaning and maintenance tips, keep visiting our blog!

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