Concrete surfaces require adequate protection. It is important to realize that although concrete is a very strong and durable material, it too can be susceptible to damage. It is worth applying the right protective coatings to concrete surfaces to gain greater durability, as well as reliability, even in harsh, changing conditions.
Why does concrete need protection?
It is widely accepted that concrete is such a strong material that it does not require any protection. Undoubtedly, this is not true, and interestingly, concrete structures need to be protected, just like steel ones. By using a protection system, the concrete structure is more durable, less susceptible to cracks, moisture penetration, and as a result, more safety is gained. It is a good idea to protect concrete with fireproof paint.
Types of protective coatings for concrete
Protective coatings designed for concrete are specialized products that form a protective layer on the surface of the material. They are used for both private buildings and industrial or public use. By choosing the right coating, you can gain greater durability of the material. We distinguish:
- Acrylic coatings, which provide greater resistance to weathering. They are characterized by high flexibility.
- epoxy coatings, which primarily provide chemical and mechanical resistance and are used, for example, in industrial halls.
- polyurethane coatings, which provide abrasion resistance, but also form a fireproof layer. So, they can even be used at gas stations.
- silicone coatings, which prevent blistering, which is especially important for historic buildings. They are characterized by high water permeability.
- mineral coatings, which provide waterproofing and protect against carbonation of concrete.
Benefits of using protective coatings for concrete
Painting concrete surfaces has many advantages. It slows down the degradation process, protects against external factors, including even the effects of water, salt or other chemicals. Of course, it should not be forgotten that it also prevents abrasion of concrete and affects aesthetics. Not without significance is the fact that in this way it is easier to keep the material clean. Fire protection painting of concrete plays an important role. It is important to know that although concrete itself does not ignite and does not burn, many manufacturers add various components to concrete mixtures that can ignite. On the one hand, they increase the load resistance and accelerate the setting of concrete, while on the other hand, they make it possible for ignition to occur. This is why it makes sense to opt for fire-retardant painting.
How to protect a concrete surface with a protective coating step by step?
Painting concrete surfaces requires proper preparation of the material. This means that the surface should be smooth, without cavities, but also without coarsening. This will ensure that the paint will adhere perfectly. Also, various dusts or impurities, such as the deposited rime from the chimney, need to be removed, so it is best to wash the entire surface if only with the appropriate detergents using a pressure washer. It is also necessary to get rid of old coatings. Only a surface prepared in this way can be protected with a fireproof coating. There are various methods to choose from. It is best to choose it in terms of functionality and efficiency of work. Painting of large concrete surfaces should be done by spray method. For smaller ones, roller painting will work, while brush painting will be suitable for covering hard-to-reach areas.
Types of fire protection of concrete material
By using a fireproof layer, one gains a greater level of safety and protection against the spread of fire. There is also no formation of toxic fumes or smoke. Some buildings require the application of R240 standards. In this case, fireproofing is necessary. This is especially true for prefabricated housing, in which polypropylene fibers are used. Fire protection must also be carried out when concrete is clad with silicone-cement panels. For example, you can use a spray that contains perlite. A mortar that is applied with an aggregate will also work well. This makes the work go quickly and efficiently. Appropriate coatings make the building meet the requirements for fire protection.
