Hardening in technics ‘wet to dry’ we use in the case where there is a need to repair an existing floor or renovation of an old floor. The surface of an old floor remains prepared suitably. We remove the outer, polluted concrete layer (e.g through milling or shot blasting). Such a prepared surface then undergoes moistening. In the next step, on the prepared base, we distribute the adhesive layer. Next, we apply ready mortar mixtures to a thickness of min. 8 mm. Such applied mortar, in the subtitle moment, we blur mechanically. At the end of this process, we obtain again hardened, smooth, hard-wearing surface.