How to remove moisture from the wall: know practical tips

You assemble a beautiful, well-decorated home and at least imagine that little damp stain on the corners of the wall. The first reaction is to wonder how to draw moisture from the wall. But calm down! Before leaving cleaning everything is important to understand where this problem comes from. And that's exactly what this post was written to help you get to know the different types of moisture so that you can correct the problem at the origin and prevent it from coming back. Follow:

Types and causes of wall moisture

Types and causes of moisture in the wall

Observing and understanding where the moisture is coming from is the first step to finally ending the problem. Basically, moisture can settle to the wall in three different ways. Check out:

Top to bottom

If the humidity is at the top of the wall, then probably the problem comes from above. This type of moisture is characterized by the infiltration of water by the roof, in the case of houses, or by the ceiling of apartments, in this case, usually the problem comes from the apartment above.

Any opening, cracking or crack in the tile may be sufficient for water to penetrate and begin to wreak havoc on the wall. Clogged chutes also cause moisture problems in the interior of the house. Observe if along with the mold stain there are also water stains or if the wall is wet. In this case, it is worth checking the roof conditions and if you notice damaged roof tiles, replace them immediately and clean the gutters.

In apartments, the ideal is to request support from the union and talk with the neighbor to diagnose the location of the leak and correct the problem.

From soil

Moisture from the soil is a little more complicated to solve because it affects the structural part of the house. In such cases, the wall is generally in direct contact with the soil absorbing the earth's natural moisture. Mold marks of this type of moisture are concentrated near the floor and are moist.

The solution to this type of moisture is to insulate and remove the soil wall, however if it is not possible to access the structure of the house, it is best to use a good waterproofing product at the base between the ground and the wall.


Indoor humidity is usually related to inadequate ventilation of the environment. The excess steam generated mainly in rooms like kitchen and bathroom is the main responsible for the humidity. In these cases, providing better ventilation to the environment is enough to solve the problem. Also check to see if the size of the windows is suitable for the space, often ends up being necessary to change the miter for a bigger one to guarantee the proper circulation of air.

One way to check if moisture comes from the environment or from inside the wall is by placing a piece of foil over the stain for a few days. If mold spots appear between the paper and the wall, then the origin of the moisture is internal. But if the stain stays on the apparent side of the paper, moisture comes from the environment.

Walls can also suffer from leaks from pipes and pipes, especially if the wall in question is close to rooms such as bathrooms, service area or kitchen. In that case, there is no way. The breaking break will be inevitable. It's the only way to solve the problem.

How to draw moisture from the wall step by step

How to draw moisture from the wall step by step

After analyzing and treating the cause of moisture, it is now possible to remove the stain from the wall and cure the problem once and for all. But do not even think about painting the wall before removing the stain. Because surely she will return.

Before painting a wall with mold it is important to clean it with bleach and mild soap. The tip is to spray bleach on the wall, wait a few minutes - the stain tends to reduce and lighten with the product alone - and only then to pass a soft sponge with soap. After this procedure the wall can already receive paint.

However, if you have detected that the moisture comes from the soil, then it is necessary to apply a waterproofing agent before painting. To do this, sand and scrape every layer of paint in the region affected by moisture, widening the spot a little to ensure that all the fungus is removed. Then apply a waterproofing product. After the drying period it is already possible to paint the wall. Preferably use anti-mildew paint to further protect the wall.

An interesting tip to help protect the wall from mold and mildew is by applying a lime coat before painting definitive. Some painters also use a mixture of lime and white glue to waterproof the entire wall.

1. Avoid moisture in the home

Avoid moisture in the home

Better than cure is always to prevent. After all, mold stains on the wall are not just an aesthetic problem, they can bring about health complications, especially for those who suffer from allergies, fits, sinusitis and other respiratory problems. Here's how to avoid moisture indoors:

2. Open doors and windows

How to draw moisture from the wall: open doors and windows

Air circulation is the main remedy against moisture. Leave the doors and windows open for air to circulate and renew indoors. The same goes for furniture, especially wardrobes, let them open from time to time to air.

In winter months, when the air is cooler, let the house breathe at least in the mornings and in the summer use and abuse the sun and the warmer air so that the moisture will go out of the house.

3. Patrol the house

How to get moisture out of the wall: patrol the house

Take one day every six months, on average, to check plumbing, roofing, walls and furniture interior. Check to see if there is a need to replace parts or make repairs. This care will keep moisture even further from your home.

4. Pull the furniture off the wall

How to draw moisture from the wall: pull out furniture

Never leave the furniture close to the wall. The ideal is to keep a minimum distance of five centimeters so that air can circulate between the furniture and the wall. Even so, from time to time, check to see if the wall is damp. If you notice a little moisture, pull the furniture out even further.

5. Use materials that absorb moisture

How to remove moisture from the wall: use materials that absorb moisture

Spread through the humid rooms, such as bathroom and kitchen, materials that absorb moisture. The most indicated are pieces of charcoal and plaster. They suck the condensed water into the environment, preventing it from rushing to the walls.

6. Change wall coating

How to remove moisture from the wall: remove the coating

But if even with all that care, moisture insist on staying in your home, try changing the wall covering. The most suitable for moisture absorbing walls are ceramic, granite and marble. Some types of textures have in their formula substances that waterproof the wall, you can opt for them as well.

Now just enjoy your house with the walls clean and without that nasty smell of mold. And, remember the slightest sign of humidity, open all the windows.

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