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Subsidence solution for blocks of flats – Oxford City Council

Challenge

Subsidence affected multiple council-owned flats, causing cracking and foundation movement, requiring stabilisation across several units without major excavation or disruption to residents.

Solution

Geobear delivered targeted geopolymer injection beneath affected foundations, strengthening weak soils and halting movement quickly, with residents remaining in occupation throughout the works.

Multiple flats stabilised

Movement arrested across affected blocks

Council housing protected

Long‑term structural integrity restored

Residents remained in situ

Minimal disruption during works

Background

Subsidence in multi‑unit residential buildings presents additional complexity due to shared structures and occupied properties.

Local authorities require solutions that are safe, cost‑effective and deliver long‑term performance without displacing residents.

Traditional underpinning can be highly disruptive when applied across multiple dwellings.

Challenge

Cracking and differential settlement were identified across several flats, indicating instability beneath shared foundations.

Oxford City Council required a rapid, low‑impact solution that would stabilise the buildings while maintaining resident safety and comfort.

Solution

Geobear implemented a carefully designed geopolymer injection programme beneath the affected areas.

The expanding resin improved soil strength and stiffness, redistributing structural loads and halting further settlement.

Works were precisely controlled and monitored in real time to ensure uniform stabilisation.

Results

The blocks of flats were successfully stabilised without excavation or significant disturbance.

Oxford City Council secured a durable, cost‑effective repair solution while residents remained safely in occupation.

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