Concrete Stumps Raised and Floor Levelled For New Tenants
- Southport, Gold Coast, QLD
The Brief
This 1970s timber investment property in Southport, Gold Coast, had developed concerning signs of subsidence. The new owner, acting on a building inspection report, contacted their property agent for guidance. The report highlighted sloping floors, cracked bathroom tiles, and hairline wall cracks. Beneath the home, gaps were visible between the timber beams and noticeably sunken concrete stumps, particularly at the rear corner.
Worried about tenant safety and structural integrity, the property agent reached out to Buildfix for a cost-effective, non-disruptive alternative to traditional restumping. The goal was to restore the home’s stability and level the floors quickly to meet the new owner’s timeline for tenant move-in.
The Challenge
The most severe subsidence occurred at the rear corner, where water pooling from surface drainage had caused significant soil erosion over time. Although the downpipes had recently been reconnected, the previous damage had left the concrete stumps unstable, particularly beneath the bedroom and kitchen. The floors in these areas were visibly sloping, and the bounce made them feel unsafe.
The challenge was to stabilise the compromised stumps, relevel the home, and close the gaps beneath the beams—all without the extensive time and cost associated with a full restumping.
Our Solution
With easy access to the subfloor, Buildfix applied our advanced GeoPoly™ PJ30 resin injection technique. This innovative method allowed us to target specific problem areas with precision and minimal disruption.
First, we set up advanced monitoring equipment to track every millimetre of lift. We then drilled to a depth of 1800mm around each affected stump and inserted 2400mm aluminium pipes to deliver the GeoPoly™ PJ30 resin directly beneath the stumps. The resin filled voids, stabilised the eroded soils, and gently lifted the structure back into position.
The entire rear corner was raised by 11mm, and three additional stumps were lifted by 5mm to 22mm, bringing the bedroom and kitchen floors back to level. The gaps beneath the timber beams were completely closed, and the bounce was eliminated.
The Outcome
Our GeoPoly PJ30 resin relevelled the home’s stumps, closed the gaps beneath the beams, and restored stability across the entire structure. This fast, non-invasive repair brought the floors back to level, eliminated the bounce, and allowed the owner to proceed with getting their new tenant in quicker and confidently.
This project highlights the effectiveness of Buildfix’s innovative solutions in stabilising older homes, providing reliable, cost-effective results that safeguard property value and structural integrity for years to come.
