Despite being a commonly used technique in various sectors, from the automotive industry to the restoration of historic buildings, many people wonder whether sandblasting can damage surfaces rather than clean them. This is a very common doubt that prevents people from taking advantage of all the benefits that this technique brings.
In this article, we will talk about the myths and explain the truth about whether sandblasting is harmful. Projectes Sastrewe have more than 50 years of experience working in the restoration, cleaning and beautification of surfaces in Mallorca. Therefore, we can debunk some of the most common myths that have damaged the reputation of this technique.
What is sandblasting and what is it used for?
Sandblasting, also known as sandblasting, is the high-speed projection of abrasive particles using compressed air. It is used to restore surfaces such as building facades and to facilitate their cleaning.
Although it has proven to be very effective, there are still many doubts about the technique. So, let's debunk some myths.
If you are not entirely clear about what sandblasting is, we invite you to read the article first Sandblasting – What it is, Advantages and Disadvantages.
Common myths about sandblasting
1. “Sandblasting damages surfaces”
This is probably one of the most common myths. Many people are convinced that abrasion is so strong that it can damage any material, but this is not exactly the case. In reality, it all depends on using the correct technique and choosing the type of abrasive that best suits each surface.
2. “Only used on metal surfaces”
It is true that sandblasting is very effective on metals, but it is also used on other materials such as wood, stone, concrete and glass. For example, in the case of the restoration of old buildings, it is used to clean facades without damaging the architectural details.
3. “Sand is always used as an abrasive”
Although it is called “sandblast”, different materials such as glass microspheres, aluminum oxide, sodium bicarbonate and steel shot are currently used, depending on the type of sandblasting that is needed in each case.
The name “sandblasting” originated from the observation of how wind-blown sand eroded the windows of buildings in the desert. The creator of the technique was inspired by this natural phenomenon and designed a machine that projected sand using compressed air to clean and prepare surfaces.
The technique was first used with silica sand, a natural abrasive material that was abundant and cheap. Although this material is no longer used today, its name has survived to this day.
4. “It is an aggressive and uncontrollable process”
False. Sandblasting is not an aggressive or unbridled process as it may seem. In fact, it is highly adjustable and precise. The pressure, the size of the abrasive and the difference between the material in question can be calibrated quite easily to ensure desirable results without damaging the treated object. That is why it is very important that it is carried out by a qualified professional.
Truths about sandblasting
1. It is a versatile and effective technique
Sandblasting is very popular both in the automotive industry and in monument restoration. It is used to remove surface corrosion, as well as to clean industrial residues and prepare the surface for future finishing. So yes, we could say that it is absolutely true.
2. Choosing the right abrasive is the key
Each material requires a specific abrasive: for example, glass beads are perfect for cleaning metal, as they do not cause any damage; while baking soda is perfect for wood. Therefore, the correct choice of abrasive is what will determine the good final result of sandblasting.
3. Pressure and technique make the difference
The pressure with which the jet is applied can be regulated according to the surface being treated. Although too high a pressure on a soft surface can damage it, when correctly adjusted, it is completely safe. For this reason, this technique should always be carried out by specialists.
So does sandblasting damage surfaces?
The easy answer is “it depends.” Sandblasting, when used correctly and by highly trained professionals, is completely safe. Not only does it not damage, but it actually improves the appearance and durability of the treated surface. However, if used incorrectly, it can cause excessive wear.
For this reason, it is very important to entrust this work to a trustworthy company, such as Projectes Sastre, specialists in the Sandblasting Cleaning in Mallorca.
If you are considering sandblasting or restoring a surface, it is best to consult with experts who can perform a pre-assessment of the project and recommend the best approach.
In conclusion, the factors that determine whether sandblasting will be safe are:
- The type of material: Softer surfaces such as wood or certain types of stone require finer abrasives and lower pressures.
- The type of abrasive. Using steel shot on metal is not the same as applying baking soda on glass. Using a suitable abrasive will be the key.
- The pressure used: Too high a pressure can cause unnecessary wear.
When carried out professionally, sandblasting not only does not damage surfaces, but restores them and prolongs their useful life.
At Projectes Sastre we are specialists in sandblasting in Mallorca
The secret is to adjust the technique according to the material and the surface to be treated. With the right combination of pressure, abrasive and application, excellent results can be achieved without compromising surface integrity. If you still have questions about whether sandblasting damages surfaces, please consult with our experts.
