Painting a concrete wall: step by step from gray to colorful

Painting a concrete wall: step by step from gray to colorful

As soon as the word & bdquo; concrete & ldquo; most people automatically think of such terms as

  • gray
  • cold
  • boring
  • cellar
  • shell
  • factory

Basically, this is quite true, because earlier was this once. But in the meantime, concrete is a modern building material that has been increasingly used in our modern world of living for several years now. Many properties are now built in the pure concrete style, the walls are not even plastered and the painting is often omitted. Paint on the wall often looks in vain. But even if you like to live in concrete, the walls do not have to be barren and boring. If you paint the concrete wall and pay attention to matching colors, then you can look forward to an interesting, varied and attractive look. However, you should keep a few points in mind if you want to achieve a long-lasting end result.

Paint the concrete wall - you should pay attention to this

Painting the concrete wall is basically not as different as painting other walls. However, there are sometimes significant differences in terms of the preparations and the processing of the wall. Here are some points to consider, such as:

  • the technique of how the concrete was poured
  • the previous condition of the wall
  • the absorbency of the concrete

There are sometimes enormous differences, sometimes different Require operations. With the right guidance, nothing stands in the way of a perfect result and your own ideas.

Analyze the Condition of the Wall

The way a concrete wall was cast is probably the biggest difference between different walls, as this makes itself noticeable mainly on the nature of the surface. If exposed concrete has already been planned in the planning of the house construction, then the surface is usually already completely smooth.

In general, a smooth surface is already a very good prerequisite if you want to paint the concrete wall. However, you should find out if a partitioning or formwork oil may have been used to cast the wall, so that once the concrete is set, the formwork can be better removed.

Such oils are used very often in the casting of prefabricated elements , Due to the fact that concrete is a very absorbent building material, the oil penetrates directly into the concrete wall. At the latest, however, if you want to paint such a concrete wall, this can be doomed to you.

So that the paint is not repelled by the oil in the wall, a good primer is necessary for the time being before painting an oiled concrete wall.

Abrasion Resistance, Coverage and Coating

When painting a concrete floor, a high level of abrasion resistance must be ensured. With a wall, however, it can be waived confidently. Instead, a concrete wall - especially if you want to live here permanently - requires even coverage and the paint should also be UV resistant. For example, if you want to paint the concrete wall in a special wiping technique, high saturation is required in addition to a good primer.

Since a concrete wall usually has a continuous flat surface, you can usually paint the concrete wall without any problems, even without interruption because there are no joints compared to a concrete wall. This allows you to easily paint the concrete wall with a paint roller.

If you need to paint on the concrete wall, then it's patience. It would be better to apply several thin layers of paint than a few thick ones in order to achieve the highest and most even coverage.

A good preparation for a good result

To get a perfect result when painting a concrete wall, you need the right equipment. These are in particular:

  • Primer (for oil residues of polyurethane)
  • Concrete or facade paint, alternatively silicate paint
  • Nuclear soap
  • Abrasive
  • Sponge
  • Hand brush
  • Brush
  • Paint Roller (Plastic)
  • Bucket
  • Stirring Rod
  • Wire Brush
  • Putty

Step 1: Sanding

Concrete surfaces are usually not quite flat. Therefore, even the tiniest bumps should be sanded smooth with abrasives, because even the slightest bumps make the surface appear uneven even after brushing. However, if you remove them by sanding, the surface appears much smoother and the application of paint is much easier.

Step 2: Cleaning

After sanding the surface, you should clean it thoroughly. First sweep the concrete wall with a hand brush to remove the sanding dust. Then clean the surface with water.

If oil has actually been used to cast the concrete walls, you should scrub the walls thoroughly with curd soap to remove the oil as much as possible.

Leave the concrete Dry completely.

Step 3: Priming

Before you can paint the concrete wall, you should prime it. Ideally, you will resort to a primer that is a shade lighter in color than the later wall color. When applying the primer, under no circumstances should even smallest parts be left out. Work carefully and carefully to get a clean surface. Then allow the primer to dry well.

Step 4: Brush

After the primer is completely dry, you can start painting. Again, you should now work clean and thorough. Always swipe in the same direction, ideally vertically. To avoid stains, you should never suddenly stroke horizontally or even vertically. Apply the paint on the entire wall and do not pause in the middle. This will help you avoid creating an ugly edge.

When the first coat has dried completely, you can apply a second coat of paint. Apply only a thin layer of paint with each step and paint in several layers instead. So you get a much smoother surface and above all a high coverage.

Take best with color and primer to products of the same manufacturer. These usually complement each other optimally, which is why the result will look even better in the end.

Summary

Even though painting a concrete wall is not really different from other walls, there are a few points, which should be considered. However, with the right work preparation, nothing stands in the way of a perfect result.

Artikelbild: © BlueSkyImages / Bigstock.com


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