Traces of moisture on the walls: what to do?

A home can suffer the harm of moisture or condensation for a variety of reasons. But when the water is present in too large quantities and the humidity is high, traces of mold and stains may appear on the walls, on the paint. These stains damage the house and coatings. How to get rid of mold stains and moisture in your home? Follow our advice.

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Plan of the article

  • Humidity on the walls: what causes?
    • Treat the cause before the symptom
    • Saltpeter: your enemy number 1
  • Old or fresh moisture stains on the walls
  • Hide moisture stains on your walls
    • Capillarity problem: caution danger
  • Prevent the appearance of moisture on the walls

Humidity on the walls : what causes?

Moisture can appear in a house quite quickly. Wet rooms such as bathrooms, kitchens or toilets can be cool if they are not sufficiently ventilated and ventilated. Brown spots or wide light spots appeared on the walls of your dwelling? The house or apartment may be too wet.

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When faced with a moisture problem, the causes can be multiple. It can also be water infiltrations or lifts. A gutter clogged by rainwater , a poorly insulated wall, a full septic tank… Anything can happen in a dwelling. The whole thing is to tackle these moisture problems as soon as possible, as soon as you see the first spots appear on the walls.

Treat the cause before the symptom

The origin and cause of your moisture problems are to be looked for before any attempt to hide unwanted traces or hide stains of moisture. The cause can sometimes be a simple leak of water that has not been detected in time. Water can wreak havoc. Once it finds its way, it extends by capillarity and can literally require you very important renovation work, such as when facing water damage.

Saltpeter: Your enemy number 1

Have you seen mold, even thin and imperceptible? Saltpeter can grow on the surface of the walls when the walls are not dry. If you notice moisture and stains at ground level, your home may be absorbed (rising moisture).

If spots appear in the corners or behind the furniture, your home is not only damp but may lack light and air. These two factors are very often the cause of a humidity problem in the home or apartment. By evaporating, water can also create condensation in a poorly ventilated area.

Whatever the cause of the arrival of water and moisture, be aware that nothing disappears on its own. The problem must therefore be addressed in depth. Saltpeter often appears in the form of a white powder with small crystals. The salt present in water in the natural state crystallizes and creates these concretions. If mold can be removed, sometimes saltpeter is a foolproof sign of a much larger moisture problem in the wall.

Old or fresh moisture stains on

walls The stain can be fresh or old: it is a question of determining one or the other. Did you just move in? By simply scraping the wall (gently!) and passing a slight sponge on mold, you will know a few days later whether the problem is persistent and topical. Mold grows at a phenomenal pace in the presence of moisture.

Fresh Moisture Stain : Your walls have a different color compared to the dry part. An infiltration or leak may be responsible. There is still time to act before any damage to the water.

Old Moisture Spot : If one of your walls has been exposed for too long to condensation, brown spots are present, the wall has mold in surface and depth. Important works are at foresee because the embrittlement of the wall through the passage of water makes a dwelling dangerous. The presence of whitish powder indicates very sharp hair lifts.

Hide moisture stains on your walls

There are no 36 solutions to moisture stains: it is necessary to be able to treat the cause and not just the symptom. Your paint starts to slightly swell and make blisters? First of all, dry the walls . This operation is possible by finding out where the water comes from. Once the problem has been dealt with at its source, ventilate the area well, ventilate and help yourself with a dehumidifier if necessary.

Then proceed like this:

  • Remove mold with a dry cloth;
  • Dab the wall with a mixture of water, bleach and detergent;
  • Be careful not to overdo it rub in order to avoid damage to the paint;
  • Again dry the wall;
  • Again pass a dry tea towel on the spot of the stain;
  • If the stains reappear, the moisture problem has not been resolved;
  • Once the problem is settled, you can put paint back on the walls or even plaster if you have had to dig the wall too damaged.

The use of soda, talcum or clay stone crystals is also recommended to clean a wall with moisture stains.

Attention : If your walls are covered with wallpaper, check that it is washable or washable. If it is not, then it will be better to change the wallpaper. Indeed, cleaning wallpaper that is very strongly damaged by moisture and water is sometimes difficult.

Problem of Capillarity: Caution danger

If you are facing a concern for capillarity, it is important to know that your walls will not be able to simply be cleaned. Moisture stains and the condition of the walls reflect a real problem in the structural of the house. Work will be expected: in this case it is better to call on a professional . A proper diagnosis will be made and you will be able to say goodbye to mold and fungus in your home.

Prevent the appearance of moisture on the walls

A few tips are required to prevent the appearance of moisture stains on your walls:

  • Often ventilate the house and each room, for at least 15 minutes;
  • Avoid the use of an aquarium or dryer in a closed dark place;
  • Do not dry your laundry in a small room poorly ventilated and very dark;
  • On the ceiling, often check for possible traces, especially in the bathroom;
  • The earlier the moisture problem is taken, the less problematic it will be.

Depending on whether moisture stains have existed for a longer or shorter time in your dwelling, it will be possible or not to make them disappear.

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