Impregnate concrete

Like any other building material, unprotected concrete is damaged by various substances that can penetrate. With concrete, you can significantly increase the service life if you seal or impregnate it. You will then receive information and instructions for sealing concrete.

Requirements of the concrete surface to be impregnated

First of all, it is crucial to which loads a component made of concrete is exposed. Here are different distinctions in question:

  • in the outdoor area (terraces, garden sheds, etc.) as a floor
  • in the outdoor area as a wall
  • indoors as a wall or piece of furniture
  • indoors as floor
  • in the basement as a floor
  • in garages as ground
  • in workshops or other premises with high mechanical stress

Impregnating concrete outdoors

According to the use of the concrete is also exposed to different stresses. Outside on terraces, garden sheds or greenhouses, the main risk is water. Moisture entering the concrete can cause significant frost damage in winter. In addition, external walls harbor the danger that - if they reach the ground - not only water but also salts will rise.

Workshops and other locations with high loads

In workshops and other commercial premises, it comes from the outset to a massive mechanical stress. In addition, the concrete (especially as a floor) but also with numerous chemical substances such as acids, alkalis, etc. finished. Garages are similar. Here is a vehicle not only road salt introduced, which can get into the concrete and destroy the cement. Solvents in the impregnation can react with the plasticizers in the pneus and adversely affect them.

No high mechanical load in the basement, but possibly moisture

In cellars, on the other hand, the mechanical load is usually relatively low, as is a basement floor not really exposed to extreme chemical situations. Nevertheless, ascending moisture from the outer walls can also be present here. Under no circumstances should impregnation or sealing be carried out if the concrete inside is wet. The water must be able to dry out completely. If necessary, this means that walls are to be dried accordingly.

Impregnating concrete in the living area

In the living area, on the other hand, in addition to the functional tasks of concrete impregnation, there are also optical and architectural requirements that must be satisfied. Especially concrete floors are becoming increasingly popular in the living area. Especially the polishing of concrete as a particularly demanding floor is very popular. The optical demands are very high here. Thus, the requirements that are placed on a concrete impregnation, completely different.

Select impregnations according to individual requirements

In the impregnation that you choose, you have to orientate yourself to these requirements. The specialist trade offers suitable impregnations for almost every area. These penetrate deep into the concrete and close it accordingly. In particular impregnations on nano-technology come with particularly long service life in the foreground. In contrast, the processing of concrete impregnation is mostly identical regardless of the product selected. Detailed differences can be found in the manufacturer's description.

Step-by-step instructions for impregnating concrete

  • impregnation
  • possibly a dilution for pre-cleaning
  • Tool for applying the impregnation (roller, puff or rubber slide)
  • cleaner
  • Grinding tool (for old paints etc.)
  • with rough concrete possibly also tools for grinding concrete

1. Preliminary work

Depending on individual requirements, it may be that you first have to sand and polish the concrete. For grinding as well as for polishing concrete, we offer appropriate advice and instructions.

Oily dirt, old paint residues and the like can be removed with a suitable thinner (for example nitro thinner). Then the concrete surface has to be cleaned well (swept clean). If you have used water for cleaning, you must wait until it has completely dried.

2. Impregnating the concrete

Now you can impregnate the concrete. For walls and other vertical surfaces, this is provided by tassels (brushes), rollers and brushes. For floors, you can also use a rubber slider (water slide) to distribute the impregnation evenly over the concrete.

Tips & Tricks

In contrast to concrete sealing, you do not have to apply a depth coat when impregnating. The impregnation itself is what penetrates deep into the concrete and protects it accordingly against external influences.

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