In spring 2025, the owner of a private residential house located in one of the suburbs of Moscow contacted Uretek. His concern was fully justified: the floors in the rooms were noticeably settling, and first thin, then increasingly distinct vertical and horizontal cracks appeared on the walls. The history of defect development turned out to be typical for many sites in the region. The owner first noticed signs of deformation about three years ago, but at that time the situation did not seem critical. Over time, the cracks widened, floor settlement increased, and the house's appearance rapidly lost its appeal. In addition, the residents experienced constant psychological discomfort: living in a house with "growing" cracks is unsafe. The house structure was made of solid brick, and the foundation was made of FBS blocks, which is typical for low‑rise construction of the late 20th and early 21st century. The owner wanted to preserve the original appearance of the building without destroying it or resorting to radical alterations. Therefore, it was necessary to urgently find a technological solution that would stop the destruction process and restore reliability to the house.

Responding to the request, our specialists visited the site as quickly as possible. During the initial inspection, we performed a rapid audit, compared the actual condition of the structures with the available technical documentation, and proposed a comprehensive engineering survey to the client. The key stage was the diagnostics of the soils beneath the building. It was decided to use the dynamic probing method, which allows the most accurate assessment of the geotechnical characteristics of the foundation and identification of weak zones. The probing points were determined according to a specially developed plan — this eliminates randomness and provides a picture that reflects the actual load distribution. Such diagnostics are an essential step, because they provide a solid foundation for engineering solutions. Our experience shows that the root of the problem is often hidden not in the foundation itself but precisely in the soil, where loosened layers, voids and zones with excessive moisture arise. In the case of the Moscow suburb house, the survey results confirmed that weak soil layers indeed exist beneath the foundation, incapable of bearing the load in the long term.

Having obtained the diagnostic results, the company's engineers began developing a foundation strengthening project. The main task was to strengthen the soil without large‑scale excavation, preserve the integrity of the building, and at the same time guarantee a long‑term result. To achieve these goals, deep injection of URETEK polymer was chosen.
This technology has proven itself well in similar projects throughout Russia. Why this method?

1. Minimal invasiveness — drilling small holes of only 12–16 mm in diameter instead of massive trenches.
2. Targeted work on weak zones — the resin is injected exactly where loosening has been found.
3. Compaction and lifting effect — as it expands, the material simultaneously strengthens the soil and, if necessary, corrects the position of the structure.
4. Environmental safety — the material is inert and stable, does not react chemically with water or soil.

It is important to emphasise: the project was agreed with the client at every stage. This approach eliminates surprises and allows the owner to understand exactly what processes are taking place in his house.

After the project was approved, the team of specialists began implementation. All work was carried out in the shortest possible time — within two weeks — while the building remained in use and the residents did not have to leave the house. The implementation stages were as follows:

1. Marking injection points and drilling small-diameter holes.
2. Sequential injection of resins into problem areas.
3. Continuous monitoring — laser levels tracked even millimetre-scale changes in the position of structures.
4. Control of resin distribution in the soil — specialists ensured that the material filled precisely the voids and weak layers without creating excessive pressure.

Thanks to the properties of Uretek materials, the injection process proceeded quickly and without unnecessary complications. Already during the work, the client noted that new cracks stopped appearing and floor movements ceased. Special attention was paid to the environmental aspect. The house was located in a green zone, and it was fundamentally important not to disturb the landscape or damage trees. The injection technology fully met these requirements.

After the work was completed, Uretek specialists provided the client with detailed recommendations for further operation of the building. These included rules for monitoring the foundation condition, tracking possible changes, and basic preventive measures. We emphasised that strict compliance with the recommendations guarantees the durability and reliability of the performed repair. Violation of these rules may lead to the recurrence of problems — and we illustrated this with examples from our engineering practice.