In this article, we will try to answer the question of how to close the external wall cracks. Our goal is to prepare a well-informed article so that readers are not disappointed.

On exteriors, the first damage usually starts with a small crack, and the moisture-and-moisture corrosion that enters over time takes place step by step. Apart from the damage caused by such troubles from the outside, they can also cause moisture and mold on the walls from the inside.

Even a wall that does not receive any water from the outside can cause mold and moisture from the inside. The first reason for this is that the hot heat inside and the cold heat outside meet on the inner surface of the wall due to the lack of thermal insulation. This situation causes a sudden condensation on the wall surface. Thus, the moisture in the air quickly turns into water and turns to the wall, and the wall becomes wet.

As an example, we can give the following: when we get in the car first thing in the morning in cold weather, condensation occurs on the windows immediately when the doors are closed. Because when the air warmed by our breath and body heat collides with the cold air in the glass, suddenly the moisture in the air turns into water. This creates water droplets on the glass of the car from the inside.

Therefore, if a wall is damp in this way, even if the best waterproofing is applied from outside, it will not work, it will get dark in the guinea. The solution is to keep the outside cold away from the inner surface of the wall. This can only be done with thermal insulation. Or it is necessary to keep the room temperature inside very very low or very high, but this is not a solution.

We would like to address this issue in detail in our other articles, let’s move on to our main topic.

How to close external wall cracks?

Cracks should be forced to open with v-shaped cuts.
If necessary, after opening the crack, it should be washed with water.
After cleaning the inside of the concrete reinforcement, anti-corrosion primer should be applied.
Repair filling with joint tape should be made with exterior cement-based repair mortar.
If the crack is too wide, it should be done with an exterior mesh and mesh plaster.
Cracks that cannot be broken by capillaries can be repaired with a quality exterior acrylic-based putty.
No further action should be taken on the repaired area before it is completely dry.

How to repair exterior plaster?

The area to be repaired with plaster should be probed with cuts, loose and hollow plasters should be dropped.
Areas of plaster that appear to be solid, but are empty and loose, should be well searched.
The area to be repaired should be washed with water if necessary before the repair.
Before applying mesh plaster, adherence enhancing concrete reinforcement anti-corrosion primer should be applied to the area.
Then, mesh plaster is applied with exterior repair mortar.
The materials used must be of high quality, because unfortunately, there are many dysfunctional products on the market.