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Bellfield builds often involve tight infill blocks, reactive clay soils and nearby mature trees—small base-stage shortcuts can lead to slab movement, drainage problems and cracking. A pre-pour check helps keep your slab compliant before it’s locked in under concrete.
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Our comprehensive service includes everything you need to make an informed decision about your property.
We assess the base material, level and consistency across the slab footprint, looking for soft spots, over-excavation and poorly compacted fill. This matters because uneven support can translate into slab movement and cracking once the home is loaded and seasons change.
We check that formwork is stable and set to the intended lines and levels, including edge beams, rebates and any step-downs for wet areas, garages or alfresco zones. Incorrect formwork can create drainage issues, trip hazards at thresholds, and costly rectification after the pour.
We review reinforcement layout as visible on site, including mesh/lap locations, bars in beams, and that steel is adequately supported on chairs to maintain cover. If steel is sitting too low, displaced, or poorly lapped, the slab may not perform as designed.
We inspect the plastic membrane for continuity, lapped joints, tears, and how it is detailed around penetrations and edges. Inconsistent vapour barrier installation can allow ground moisture to migrate into the slab, affecting floor coverings and internal humidity control later.
We check plumbing and electrical penetrations for location, sealing approach and protection, plus any sleeves for future services. Misplaced penetrations can force on-the-fly changes before the pour, increasing the risk of membrane damage and poor patching around pipes.
We look for conditions that can trap water against the slab edge—ponding in the excavation, poorly graded ground, or inadequate run-off pathways during construction. Managing water at this stage helps reduce wet sub-base conditions and the risk of edge-beam moisture issues.
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Inspection photo 1
Inspection photo 2
Inspection photo 3
Find answers to the most frequently asked questions about our inspection service.
Book once formwork, reinforcement, membrane and service penetrations are installed, but before the concrete pour is confirmed. In Bellfield, sites can move quickly once the builder schedules the pump and concrete truck, so it’s best to organise the inspection as soon as you’re told the base stage is ready. We’ll aim to fit in with the pour window so defects can be corrected in time.
A Stage 1 inspection focuses on what will be hidden after the pour: sub-base readiness, formwork stability and levels, steel reinforcement placement and support, vapour barrier condition and laps, and how penetrations are detailed. We also flag site conditions that can affect the slab, such as ponding water or disturbed ground. You receive a report with photos and clear actions to raise with the builder.
We compare what’s visible on site to the typical requirements for good slab preparation and to any available drawings or documentation you can provide, noting discrepancies and workmanship concerns. While we’re not replacing the engineer’s role, we can identify common non-conformances—like inadequate support to reinforcement, damaged membranes or unstable formwork—so they can be addressed before the pour.
They can be. Bellfield has many established streetscapes with mature trees, and soil moisture changes can affect ground movement over time. At base stage, that makes sub-base preparation, drainage control during construction and correct reinforcement placement especially important. A pre-slab inspection helps confirm the slab is being set up to perform as intended and that shortcuts aren’t taken before everything is covered by concrete.
Yes. Subdivided and infill sites often have tighter access, more service trenching, and areas of disturbed ground from demolition and previous structures. We pay close attention to the consistency of the sub-base, any signs of backfilled trenches within the slab footprint, and the location of penetrations where multiple dwellings can increase complexity. Catching these issues pre-pour helps avoid uneven support and future rectification.
Still have questions?
Get in TouchACE Building and Pest Inspections provides a photo-backed, practical pre-pour report so you can get base-stage fixes sorted before the slab is poured—call 0485 857 077.