San Souci - Structural and Damp Remediation Works

Targeted structural and damp remediation works were undertaken to Unit 1 within this residential strata complex in Sans Souci.

The works addressed significant slab settlement (up to 60mm) and ongoing moisture ingress affecting the living and kitchen areas.

The initial remediation strategy involved a deep-lift resin injection beneath the infill slab, designed to fill voids and re-level the affected concrete through controlled expansion. During works it became evident that the slab had rotated and become mechanically wedged against adjoining structural elements due to differential settlement. This lateral restraint prevented vertical movement, meaning the slab could not be lifted within acceptable tolerances despite successful void filling and ground densification beneath.

Following engineering review, the methodology was revised to incorporate a purpose-designed engineered screed system to re-establish finished floor levels and deliver a predictable, long-term outcome where ground improvement alone could not achieve full correction.

In conjunction with the structural works, cavity flashing and a chemical damp-proof course were installed to the eastern elevation to address rising damp and water penetration. Brickwork was carefully removed, new 300mm Alcor flashing installed with pressure seal detailing and compliant weepholes, followed by reconstruction. A damp-proof injection system was installed to the internal masonry skin to mitigate ongoing moisture migration.

All works were completed within an occupied dwelling, with flooring, skirtings and joinery carefully removed and reinstated. The final solution combined ground engineering, structural rectification and moisture management to restore performance, stability and internal amenity.