Monkey Island Estate – stabilisation and slab lifting

Challenge

Settlement and voiding beneath slabs at Monkey Island Estate caused differential movement and loss of support, requiring stabilisation without intrusive excavation within a sensitive environment.

Solution

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Sensitive estate environment

High‑value property setting

Slab lifting achieved

Controlled re‑levelling in situ

Non‑intrusive solution

No excavation or slab removal

Background

Areas within Monkey Island Estate experienced settlement linked to void formation and weakened sub‑soils beneath ground‑bearing slabs. Differential movement led to uneven surfaces and concerns over long‑term structural performance.

Given the estate’s setting and constraints, a low‑impact remediation method was essential.

Challenge

Traditional slab removal and reconstruction would have required extensive excavation, programme delays and disruption to the surrounding environment.

A precise solution was needed to restore support and achieve re‑levelling while protecting existing finishes and structures.

Solutions

Geobear implemented a targeted geopolymer injection programme beneath the affected slab areas.

Small‑diameter injection points were drilled to introduce a two‑component geopolymer into voided and weak zones. As the material expanded, it filled voids, compacted loose soils and gently lifted the slab back toward level.

All injections were monitored in real time to ensure controlled lift and uniform stabilisation.

Results

Slabs were successfully stabilised and re‑levelled without excavation or structural replacement.

The works were delivered efficiently within a sensitive estate environment, providing a durable and lower‑carbon alternative to traditional reconstruction.

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