Challenge
Subsidence affected 15 terraced homes due to weakened soils from nearby construction. A non-disruptive solution was required to avoid relocating residents and causing community-wide disruption.
Solution
Geobear installed targeted geopolymer injections to strengthen foundations, party walls, and slabs. Works were completed over ten weeks with no excavation, no relocation, and minimal community disruption.
All homes treated without resident relocation
Completed by a single specialist site team
Geobear method emitted up to 34% less CO₂ than alternatives
A row of terraced houses in Dublin began experiencing subsidence following nearby construction activity. Cracking appeared across rear extensions, party walls, boundary walls, and floor slabs.
The weakened ground layer above Dublin boulder clay required strengthening, but traditional excavation-based methods would have caused significant disruption and potentially forced residents to relocate.
The objective was clear: stabilise 15 homes using a non-intrusive method with residents remaining in place. Geobear was appointed to design a fast, community-friendly solution.
The Problem: Subsidence was spreading across 15 terraced properties, affecting extensions, party walls, foundations, and floor slabs.
The Barrier: Traditional underpinning would have required large excavations, major community disruption, and possible temporary rehousing of multiple families.
The Need: A non-disruptive, fast, and low-carbon remediation approach that could be delivered safely with residents remaining in their homes.
Geobear engineers designed a targeted geopolymer injection plan based on detailed site investigations and on-site probing.
Targeted Injection: Rear wall foundations, extension foundations, slabs, party walls, and boundary walls were treated to achieve stabilisation pressures between 25–125 kPa.
Minimal Disruption: Works were completed over 50 shifts across ten weeks, using a single team and maintaining full resident access throughout.
Non-Invasive Method: No mass excavation, no heavy plant, no spoil removal — ideal for a densely populated urban street.
Verification: Pre- and post-probing was carried out at each property to confirm soil improvement.
This approach stabilised all affected homes while keeping the community undisturbed.
All 15 properties stabilised with no major disruption or relocation required.
Low-carbon delivery: Up to 34% CO₂ reduction compared with traditional methods.
Community protected: Residents remained in place, and the works caused minimal disturbance to the neighbourhood.
Engineering success: Verification tests confirmed improved ground conditions across all treated zones.
Every home is unique. Our experts are ready to listen and provide answers tailored to your specific property and concerns.
