How to insulate interior walls from mold?

As insulate the interior walls of the house from mold? Many will have noticed the appearance of very unpleasant dark spots on the interior walls of the house, especially in the rooms most affected by the moisture problem. Unfortunately, mold tends to multiply very quickly in damp and poorly ventilated environments and often reappears even after the most aggressive treatment. So how can we overcome this problem?

Controlling the formation of mold in the home is very important, not only for a simple aesthetic question. Its presence can even cause health problems, such as skin and eye irritation, respiratory disorders and allergies. For this reason, it is useful to take action on two different fronts: firstly mold removal and the application of durable paints and products, after which the actual insulation with specific materials, thus creating a inner coat. Below is all the useful information.

Why does mold form on the walls?

The first step you need to take is to understand why the annoying mold suddenly appeared on the walls. It is a real living organism, a fungi characterized by thousands of spores: the latter, invisible to the human eye, are almost ubiquitous. In fact, they are usually present in dust and carried in domestic environments by air currents.

However, for mold to take root in interior walls, certain conditions are required:

  • one particularly humid environment;
  • from quite cold walls;
  • one poor ventilation;
  • its formation condensation on the walls, as happens for example in the bathroom or the kitchen.

In general, maintaining an indoor temperature between 18 and 21 degrees and a humidity level between 60 and 65% are not optimal conditions for mold to multiply. However, there are other elements that can contribute to its appearance, such as the external coating of the walls, poorly breathable materials used for the walls themselves and the age of the building.

What problems does mold cause on walls?

As already mentioned, apart from a purely aesthetic issue, mold is also responsible for some unpleasant consequences. At the wall level, this unwanted visitor can actually determine:

  • peeling paint;
  • damage to the putty.
  • alteration of wallpaper;
  • damage to wooden partslike skirting boards;
  • wear of tile joints.

Much more relevant are the health consequencesamong which are mentioned:

  • dermatological disorders such as skin irritation, dermatitis and redness.
  • eye irritation;
  • respiratory disorders;
  • allergic reactions in hypersensitive individuals.
  • general malaise.

How to prepare walls to insulate them from mold

Having understood how mold is formed, before proceeding to the actual insulation of the walls, it is necessary to spend time preparing them. First of all, removing any mold that is present and then repainting the wall itself with special paints capable of preventing – or at least limiting – its formation.

How to remove mold from walls

Remove the mold from the walls it is an operation that requires a certain attention and, above all, the necessary precautions. In fact, it is recommended to wear a mask to avoid inhaling the spores and proper protection if using aggressive products.

The first line of defense can be represented by natural remedies, especially if the presence of mold is not too extensive. Among the most common, the following can be considered:

  • white vinegarto dilute in warm water and dab on mold stains with a slightly rough sponge.
  • bicarbonate and lemon, dissolve with a little water until we get a cream solution. Using a microfiber cloth, spread it over the mold, leave it on for a few minutes and remove it all with a clean sponge. Baking soda will also help reduce the dark marks left on the paint.
  • hydrogen peroxideto be poured straight over the marks, to make them less visible.

However, there are more effective chemical solutions on the market, which should be used with due precautions:

  • anti-mold solvents for walls, usually available in a spray for application directly to the mold.
  • bleachto spread with the help of a sponge, as it is able to destroy the mold and its spores.

What colors to use after cleaning

After the mold is removed, it is useful to repaint the walls with special paints, to avoid the formation of new stains before the actual insulation or, even worse, after the insulation boards are applied.

For this purpose, the so-called are usually used anti-mold paints, also called anti-condensation thermal paints. Thanks to their special composition, they prevent condensation and moisture from affecting the wall, while at the same time keeping it ventilated and protecting it from temperature changes: all elements that, as we have already seen, reduce the possibility of mold formation.

How to insulate interior walls from mold

Once the excess mold has been removed and the wall has been protected with the appropriate paint, it is finally time totrue isolation of the interior walls so that the mold is permanently a thing of the past.

Essentially, it involves adding an insulating layer to the existing wall, thus preventing spores, which are always present in the air, from taking root. To do this, two steps are usually combined:

  • the preparation of a inner coat.
  • its use heat insulating plasters and foams.

What is an anti-mold undercoat?

Similarly to what happens for the outdoor thermal coating against moistureit is also possible to cover the interior walls of the house, not only to improve thermal insulation, but also to reduce the accumulation of condensation and moisture, the first two elements that facilitate the formation of mold.

The creation of the inner layer is usually done by applying special products to the previously cleaned and treated walls cork panels or other insulating material. These have the advantage of having an average reduced thickness and therefore do not significantly reduce the dimensions of the rooms. They are attached to the wall using special adhesives, which are also resistant to condensation and moisture.

The utility of plasters and heat-insulating foams

Apparently, the cork panel used for the cladding does not remain exposed, but is covered with special solutions so that the final result is indistinguishable from a common wall.

First of all, special foams can be applied to level any spaces between the panels and the typical porosity of the cork surface. After that, the operation is completed with theheat insulating plaster which in addition to fighting condensation and moisture, protects the wall from damage jump in temperature or from a very cold surface, which could represent an ideal environment for mold.

THE Court fees for the intervention can vary greatly, depending on the size of the room to be treated, the materials chosen and much more. In general, it ranges from 10 to 50 euros per isolated square meter, an investment that nevertheless guarantees long-term freedom from annoying mold.

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