Spring 2024. The owner of a private house in the Moscow region contacted our company. The building still smelled of the freshness of construction: gas silicate blocks, a slab foundation, year of construction – 2023. It seemed that only comfort and peace lay ahead. But instead of the joy of housewarming, anxiety awaited the owner.

The winter turned out to be harsh. And immediately after the frosts, cracks appeared on the walls. Not one and not small – several, and all of them grew quickly. To this was added floor settlement: unevenness, a feeling of a "sloping floor", and a clear violation of comfort. The owner rightly suspected that the matter would not be limited to cosmetics, and turned to us with the question: what to do?

The first rule of engineering is not to fight the consequence until the cause is found. Cracks in the walls and settling floors most often signal problems not with the finish, but with the foundation of the building.

We carried out dynamic probing of the soils – this is a reliable method that allows measuring the soil's resistance to load and identifying its weak zones. The diagnostics confirmed the concerns:

• several layers of loosened soil were found beneath the foundation slab;
• local settlement of the foundation slab was recorded.

These factors explained both the cracks in the gas silicate walls and the unevenness of the floors. The picture became obvious: the structure was losing uniform support, and without urgent intervention, the risk of deformation of the entire house was too high.

When it comes to weak soils, there are several approaches. The classic one – digging, replacing the foundation or concreting. But all of them are long, costly and unsafe for a new house.
Our choice fell on deep injection of URETEK polymer material. The reasons are obvious:

• the material is injected directly into the loosened zone;
• upon reaction, it expands, compacts the soil and fills voids;
• the bearing capacity is restored almost instantly;
• the technology itself does not require heavy machinery or large-scale earthworks.

Such an approach is especially important in the client's situation: construction work was already nearing completion, and delays were highly undesirable.

The work was scheduled to minimise discomfort for the owner. On the appointed day, the team began injecting the URETEK polymer composition.
The process looked like this:

• through small injection holes, the composition was fed into the problem zones;
• expanding, it filled voids and compacted the soil;
• in real time, we tracked the behaviour of the slab and walls using geodetic marks to precisely control the effect.

Already during the work, it became clear: the floors stabilised, further settlement stopped, and the risk of crack opening was eliminated.

The project was completed within one working day. Without heavy machinery, without noise and waste.
What the client received:

• restored bearing capacity of the foundation;
• stabilised foundation and eliminated floor settlement;
• confidence that cracks will no longer progress.

We provided a warranty on the performed work – this confirms that the solution is not temporary, but designed for years of safe operation.

This house's story is illustrative. Even a new building is not immune to settlement and cracks. Soil is a living system that changes under the influence of frost, moisture and loads.

But modern engineering offers methods that allow working precisely, accurately and without destruction. Polymer injection is not "crack repair", but restoration of the entire "foundation–soil" system. That is why the result is reliable and predictable.