Challenge
The home had worsening cracking and uneven floors caused by a failing raft slab on peatland soils. Traditional underpinning was too slow, disruptive, and costly for the homeowner.
Solution
Geobear installed a targeted geopolymer injection plan to strengthen weak soils beneath the raft slab. The non-invasive method stabilised the home in one day with no excavation.
Full raft slab stabilisation completed without excavation
Engineered to strengthen peatland soils to 2.1 m depth
Homeowner Net Promoter Score following the works
A homeowner in Co. Kildare contacted Geobear after noticing subsidence cracking on the right-hand elevation of their property. The house, constructed on a raft slab, was showing both internal and external cracking, and the internal floors were uneven with cracked tiles.
Investigations confirmed that an adjacent drainage ditch—a long-standing issue—had caused ground weakening and settlement beneath the slab. The homeowner needed a cost-effective and rapid solution that would stabilise the raft without excavation or major disruption.
The Problem: Cracks were spreading through walls and floors, and the raft slab was visibly affected by settlement caused by peatland soils and nearby drainage issues.
The Barrier: Traditional underpinning meant weeks of excavation around the entire perimeter, noise, mess, concrete deliveries, and significant household disruption.
The Need: A quick, affordable, and non-invasive solution that strengthened the ground without requiring the homeowner to move out or tolerate heavy construction activity.
Homeowner, Co. Kildare:
Geobear’s engineering team designed a targeted ground improvement plan that used 11 geopolymer injection points placed around the slab perimeter.
Precise Injection: The geopolymer resin was injected through small holes to 2.1 m depth, where it rapidly expanded to compact the weakened soils beneath the property.
Minimal Intrusion: No excavation, no diggers, no concrete trucks — only small specialist equipment was required.
Verified Lift & Improvement: Laser monitoring confirmed ground strengthening and restored support under the raft slab.
The entire operation was completed in a single day, with the homeowner able to remain in the property throughout.
Immediate Stabilisation: The raft slab gained uniform support, stopping ongoing movement.
Zero Disruption: No excavation or spoil meant the garden and external areas remained untouched.
Fastest Possible Timeline: Traditional underpinning would have taken at least three weeks — Geobear finished in a single day.
Customer Satisfaction: The homeowner gave a 10/10 NPS score, reflecting the speed, cleanliness, and effectiveness of the solution.
Every home is unique. Our experts are ready to listen and provide answers tailored to your specific property and concerns.
