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Shot peening

Professional subfloor preparation is an important step in the processing and finishing of concrete and screed surfaces. Its purpose is to remove residues of oil, grease, dirt and paint, reveal imperfections and cracks and improve adhesion for the application of synthetic resin coatings or adhesives. A common method for this is the so-called shot peening. In the process, a machine hurls small steel balls at high speed onto the surface to be treated. As a result of the impact, particles detach from the surface and are immediately transported to a collection container together with the blasting agent. In this article you will find out how shot blasting of concrete and screed works in detail, what advantages it offers and for what purposes it can be used

How does shot blasting of concrete and screed work?

The central element in shot blasting screed floors or concrete floors is the blasting agent (sometimes also called blasting granules or steel shot) itself. These are usually steel shots, which - depending on the application - have different sizes, shapes (spherical, cylindrical or angular) and can have degrees of hardness. To prepare the substrate, the desired blasting agent is filled into a special shot blasting machine. It accelerates the steel balls with the help of a rapidly rotating flywheel and hurls them at high speed onto the surface to be worked on. The speed and pressure (usually between 2 and 10 bar) can be individually controlled, depending on the desired end result.

On impact, the abrasive shatters the surface layer by layer, detaching small particles from the ground. These then end up in a rebound channel together with the steel shot. Here, the particles detached from the substrate and the blasting agent are separated from each other. While the blasted material and the resulting dust end up in a collection container via an integrated extraction system, the steel balls are fed back to the blast wheel, creating a closed circuit. Experience and expertise are required for shot peening to achieve the best possible result. Only a specialist can select the appropriate blasting medium for the respective substrate, set the shot blasting machine correctly and operate it effectively and safely. Would you like to have your concrete or screed floor shot-blasted by a professional? You have come to the right place. Arrange a non-binding consultation appointment now!

What is the purpose of shot blasting screed and concrete floors?

Shot peening can be used for a variety of purposes, all of which serve to improve the substrate. These include the

  • Adhesion improvement: Preparing the surface with shot blasting helps to improve the adhesion and durability of coatings (e.g. synthetic resins), sealants and adhesives on concrete and screed floors.
  • Surface cleaning: With the help of shot blasting, stubborn residues of grease and oil as well as dirt, paint residue and old coatings can be removed quickly and with comparatively little effort.
  • Surface profiling: By shot blasting the floor, it is possible to profile the surface as required. In this way, the optimal basis for the adhesion of different coatings can be created.
  • Removal of weak points: Small cracks, cavities and the so-called laitance (weak top layer on concrete and screed floors) can be removed with shot blasting. In this way, coatings find a better hold and have a longer service life.

What are the advantages of concrete and screed shot blasting compared to other methods?

Shot peening offers a number of advantages over other methods of substrate preparation. Above all, the method is very environmentally friendly, since the dust that is produced is extracted and the blasting agent used is collected and reused. Chemical agents are not used in shot peening. In addition, the process is very efficient, so that both small and large areas can be processed within a short time and prepared for the following work steps. Last but not least, shot blasting ensures very even results and, if used correctly, does not cause any damage to the substrate.

Are you looking for a shot blasting specialist? Arrange a consultation appointment now!

Whether private house, public building or industrial property - if you are looking for a professional to shot blast your screed or concrete floor, you have come to the right place. With over 25 years of experience in laying and finishing different types of concrete and screed floors, we implement your project professionally, reliably and on fair terms. It is best to make an appointment for a consultation directly by e-mail or telephone. We would be happy to get an idea of ​​your planned project and then make you a non-binding offer for shot peening.

[ FAQs ]

Questions and answers about shot peening

Where is shot blasting used for concrete and screed surfaces?

Shot blasting of screed and concrete floors is used in various areas. In addition to private residential buildings, these include public buildings, industrial and commercial facilities, multi-storey car parks and parking lots, as well as swimming pools and sports facilities.

What alternatives are there to shot blasting concrete and screed floors?

In addition to shot blasting, substrates such as concrete and screed can also be prepared for the application of coatings etc. using other methods. These include grinding, milling and sandblasting. Which of these variants is used depends on the individual requirements of the project and the result to be achieved.

What are the costs of concrete and screed shot blasting?

The cost of shot blasting screed and concrete surfaces depends on various factors such as the surface finish and the overall size of the area to be treated. Billing is usually per square meter. We would be happy to make you a fair offer that takes all factors into account and is individually tailored to you.

Is shot blasting of concrete and screed floors an environmentally friendly process?

Yes, compared to other methods of surface preparation, shot blasting is very environmentally friendly and efficient. The air is kept clean by extracting dust, no potentially hazardous chemicals are used and the steel balls used can be reused after use.