Technology applied:
The solution to the problem was provided by the SLAB LIFTING method according to URETEK technology. It involved injecting a special expanding polymer composition under the floor through thin steel tubes inserted into small‑diameter holes (up to 8 mm) drilled through the floor structure and its concrete base. The polymer mixture that penetrated between the slab and the soil, due to its expansion, filled the voids and, with the associated high pressure, created a lifting force for the floor while compacting the underlying soil and improving its mechanical properties.