Before the application of self-levelling compounds or resin floors, concrete subfloors need a thorough cleaning. Horizontal, e.g. concrete, surfaces are usually cleaned out by shot blasting, milling, or grinding.
With appropriate machines, we use highly efficient methods of removing old layers and dirt from the substrate surface and roughening it (e.g. resin floors, ceramic carpets, terrazzo, and other similar surfaces). These works are carried out quickly, without forging and generating moisture or dust, and without interrupting plant operation.
Milling allows for efficient removal of excess concrete and surface layers, all kinds of residues from adhesives, paints, and other troublesome contaminants from the surface. In addition, it levels all irregularities and damages. Once milling is completed, the floor is ready for use or for applying subsequent layers. The thickness of the removed layers ranges from 2mm to 50mm.
For milling, we use very modern equipment from Blastrac, VonArx, Wirtgen.
The shot blasting method, also known as blasting, shot peening, or graining, is a dry method of dust-free surface cleaning. The shot blasting process is carried out to remove cement milk, rust from steel surfaces and dirt layers, and paint coatings from the concrete surface. As a result of shot blasting, the concrete surface becomes sufficiently rough and suitable for applying a protective coating.
Shot blasting depth 0-2mm. Shot blasting is a method of non-destructive preparation of the substrate.
Another method of dust-free cleaning of concrete is grinding. It is the treatment of the substrate with diamond discs in order to remove thin layers of impurities and smoothen the surface. By grinding, a very even and smooth surface is obtained. After treatment, floors are suitable for applying resin layers or for leaving them smooth and polished.