In June 2025, the homeowner noticed alarming signs: the floor slab began to shift, and areas of settlement appeared. Visually — local floor deformations, a feeling of “sinking,” and micro-cracks in the finishes.
Key question for the owner:
Is this a cosmetic issue or a systemic loss of the foundation’s load-bearing capacity?

Initial data of the object
Building type: private single-story house
Year of construction: 2024
Structure: silicate brick
Foundation: monolithic reinforced concrete slab
Stage at the time of inspection: finishing works, windows and doors installed

Engineering diagnostics: what really happened
The initial audit revealed two critical risk factors:

1. Possible violations in slab construction technology.
2. Erosion and over-moistening of the foundation soil outside the building.

However, a visual assessment is not enough. To accurately determine the causes, the method of dynamic probing was applied.
What dynamic probing revealed:

• The foundation has a multi-layer structure.
• Weak load-bearing layers are present in the profile.
• Elevated soil moisture was recorded.
• Slab depth ≈ 0.9 m from the design level.

Why this is critical
The monolithic slab functions as a load-distributing system, transferring weight across the entire area.
If under the slab:

• there is loose backfill,
• voids are present,
• layers have different densities,
• the soil is over-moistened,
• uneven settlement occurs.

Even without visible cracks in the walls, the process can progress. The higher the moisture, the lower the calculated bearing capacity of the foundation.

Typical scenario of problem development

1. During construction, backfilling is performed.
2. Compaction is done formally or unevenly.
3. After commissioning:

• the soil becomes saturated with water,
• weak zones lose density,
• local loosening occurs.

4. The slab begins to “move.”

Important:
The slab may appear monolithic and strong, but if the foundation loses bearing capacity — concrete alone will not solve the problem.

Selection of engineering solution
Options considered:

• Removal of the floor and replacement of the foundation.
• Underpinnings and partial reinforcement.
• Deep stabilization without opening the structure.

Taking into account:

• the finished interior,
• the need for minimal intervention,
• limited time,

…the URETEK deep polymer injection technology was chosen.

How URETEK technology works
The method is based on controlled injection of a two-component polymer composition into the zones of soil loosening.

Physics of the process

1. The material is injected under pressure through small-diameter injection channels.
2. The polymer expands.
3. This leads to:

• filling voids,
• displacing water,
• compacting the soil,
• increasing the deformation modulus of the foundation.

Unlike cement mixtures:

• the polymer does not shrink,
• is not washed out by water,
• gains strength quickly,
• does not create excessive load on weak soil.

The process is monitored in real time.

Implementation on site
The work included:

• localization of settlement zones,
• stabilization of the slab foundation,
• filling voids,
• monitoring lifting and compaction.

Execution time
All activities were completed in one working day.
This means:

• no floor demolition,
• no furniture removal,
• no façade damage,
• no interruption to the house operation.

What changed after strengthening
After injection:

• The foundation acquired a uniform structure.
• Bearing capacity of weak layers increased.
• Further settlement was stopped.
• Spatial stability of the slab was restored.

The main point — the cause, not the symptom, was addressed.

Who this situation is relevant for
You may recognize your case if:

• The house was built 1–3 years ago.
• The foundation is a monolithic slab.
• A fill cushion was used.
• The site has a high groundwater level.
• Floor irregularities or a sense of settling appear.
• There are doubts about compaction quality during construction.

The earlier the diagnostics are performed, the smaller the scope of work.
Why this solution is convenient for the owner

• No excavations.
• No destruction.
• No heavy machinery noise.
• Done in 1 day.
• With predictable results.