You have problems and you need to know how to remove saltpeter from walls. If so, and you are tired of attacking the symptom but not the problem that generates it, today in Facades World We are going to tell you not only how to eliminate saltpeter but you will also learn to identify the causes that generate it. So, if you want to see your shiny walls again, do not detach yourself from the screen because we are going to start right now!
How to remove saltpeter from walls - Step by step
Today our colleagues from Architecture Planet they surprise us with a new post in which you can learn how to remove saltpeter from walls. So adjust your belt because if you are interested in knowing the causes, consequences, and how to eliminate them at the root, you are in the right place ... Let's see the content of this post.
- What is saltpeter?
- Causes of the appearance of saltpeter
- Types of humidity that give rise to saltpeter
- How to remove saltpeter from walls
What is saltpeter?
Saltpeter is a saline substance that appears on walls, floors, walls, and rarely ceilings. They are salty blooms, in the form of spots or deposits, which accumulate on the walls in the presence of humidity. Many people often confuse saltpeter with mushrooms, but they are not actually organic substances. Basically they are crystals of salts that are deposited on the porous material of our houses. That is why we can see it in brick walls, in plaster or even in stones.
Saltpeter stains are not only an aesthetic problem that affects walls, but their poor treatment can lead to paint peeling, degradation of plaster and even brick breakage. That is why today we will explain how to remove saltpeter from walls.
Causes of the appearance of saltpeter
Earlier we mentioned that saltpeter is a symptom of a more complex disease that is humidity. Basically if there is no moisture on the walls, it is impossible for saltpeter to appear on them. To know the process that generates it, we will start by telling you that the water present in walls, foundations or plasters dissolves the salts that are part of these elements, and carries them with it through the wall. When water wants to evaporate, it looks for ventilated areas that have contact with the air. Upon reaching the plaster, the water manages to evaporate but leaves deposits of crystallized salts, the saltpeter, in its process, which cannot evaporate.
Over time, the crystals continue to accumulate until they break the plaster, brick or even the mixture that joins them. It is for this reason that we must identify the cause of the humidity to attack the problem and eliminate the saltpeter forever.
Types of humidity that give rise to saltpeter
When we how to remove saltpeter from walls one of the most common causes that generate it is:
- Moisture in the foundation: This occurs in the absence or failure of the insulating layers that block the rise of moisture from the foundations. Then the water from the ground passes to the foundations dragging salts towards the walls where we see the problem explode.
- La moisture from seepage: It is produced when the rains that have contact with our unprotected exterior walls penetrate the brick. In its normal course the humidity drags the saltpeter towards the driest areas of the house, which is the interior where it will seek to evaporate. If in this way the humidity meets a latex paint we will see how the wall is enclosed, forming a moisture bubble.
- Humidity due to water losses: It happens when one of our pipes that carry water has a fault or is punctured. In this case, the continuous release of water produces the origin of the humidity and we must solve it to make the problem disappear.
How to remove saltpeter from walls
Once we identify the humidity problem that caused the appearance of saltpeter, we are ready for the next step, to remove the saltpeter from the walls.
- Makings: Brush, spatula, gloves, goggles, a bucket and plastic tarp to cover the floor.
- Clean the surface: First we must do is brush the wall with saltpeter. The function is to eliminate that crust that was formed with the saltpeter and if it does not come out with the brush we will have to use the spatula to help us remove it completely.
- Acid wash: We can get it in hardware stores as muriatic acid and we must use it with the ratio 1 × 3 diluted in water (1 liter of muriatic acid per 3 liters of water). We will have to place our mixture with the help of a brush (always wear goggles and gloves) and let it act between 5 to 10 minutes to achieve its complete removal.
- Rinsed: To complete our cleaning we must clean with plenty of warm water. With our stiff bristle brushes and plenty of water, we finish removing traces of saltpeter and acid that may have remained.
- Termination: To finish and depending on the degree of affectation our wall had, we must fix it. If necessary we will have to render our wall or even use filler. Finally, we must use wall sealant or anti-nitrate blockage if possible to ensure that it does not come back.
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