How to remove moisture stains from walls in an eco way

How to remove moisture stains from walls in an eco way

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There are chemical cleaning products on the market to remove moisture stains from the walls, but it is not necessary to put ourselves in so many expenses and above all, expose our health or contaminate the environment.

We can remove moisture stains with simple products that we have at home, more natural and harmless.

Cleaning these stains is not only an aesthetic issue and a sense of harmony in the home, but it also allows us to avoid the development of allergies and respiratory diseases.

However, sometimes these tasks are difficult for us, since places such as walls and ceilings tend to present humidity due to the excessive growth of mold.

This type of fungus can belong to the speciesCladosporium, Penicillium and Alternariaand their presence usually causes visible dark spots that are difficult to remove.

And, although at first it seems that they only affect the aesthetics of the house, over time it can become a strong trigger for diseases.

Because of this, we want to propose a series of homemade solutions to eliminate it without the need to use aggressive chemicals.

Below we will tell you in detail what it is about and how to apply them whenever necessary.


Kitchen salt is one of the best allies for removing mold stains, as it easily absorbs moisture and creates a protective barrier against the growth of these microorganisms.

For many years it has been used as a complement to household cleaning tasks, not only because it is used to disinfect but because it removes even difficult stains.

How to use it?

  • Pour a kilo of salt into a wide-mouthed container and place it right in the center of the humid environments in your home.
  • This ingredient will absorb moisture from the air and prevent the reappearance of the fungus.
  • Change it when you notice that its color is dark, as it is an indication that it cannot absorb more moisture.

White vinegar

Known as one of the best eco-friendly cleaning agents, white vinegar is an excellent product for removing stains, mildew, and odors.

Its antifungal and antibacterial compounds act directly on the microorganisms that cause humidity, and leave a clean and healthy environment.

How to use?

  • Combine equal parts white vinegar with water and pour it into a spray bottle.
  • Next, spray the product on the walls and ceilings, and wait 20 minutes for it to work.
  • After this time, remove the stains with a damp microfiber cloth or sponge.


Although its main applications have to do with the skin, hydrogen peroxide is a good option to whiten the walls and eliminate fungi.

Although some recommend diluting it in water, the ideal is to leave it in its pure state to more easily remove moisture.

Visit this article: 5 homemade preparations to neutralize unpleasant odors in your home

How to use it?

  • Pour 3% hydrogen peroxide into a spray bottle and spray onto desired surfaces.
  • Let it work for 15 minutes and remove it with a brush or sponge.

Sodium bicarbonate

Baking soda is an abrasive and antibacterial that is used to clean many surfaces in the home.

Its direct application on moisture helps to absorb it and, in turn, acts directly on the fungi that cause it.

It has bleaching and deodorizing properties that remove dark spots and odors.

How to use?

  • Dampen some of the baking soda with water or lemon juice, then spread it over the moisture stains.
  • After 20 or 30 minutes, rinse and scrub with a brush.

For best results, try to open the windows and doors every day, since the ventilation of the environment is key to eliminate humidity.

Tips to avoid humidity

  1. Charcoal,It is very effective in combating humidity in the environment. Simply put a few pieces in a container that has a perforated lid. Change the charcoal every two weeks.
  2. When cookingRemember to turn on the exhaust fan every time you boil something.
  3. Do not use the clothes dryer in a closed environment. You need to open doors and windows to promote ventilation.
  4. It is rare to have a fan in the bathroom, but it is a good option to keep the environment dry.
  5. Places like the kitchen or bathroom They are usually humid because they are spaces where a lot of water is used. Try to keep windows and doors open to allow proper ventilation.
  6. Install a dehumidifier electric.
  7. Repairs water leaks immediately that you detect.
  8. After you take a bath, make sure the shower curtain is extended well. Do the same with the towels; This will prevent moisture from concentrating.

With information from:

Video: How to Treat Stains on Plaster and Drywall. Ask This Old House (July 2022).


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