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Brunswick builds often involve tight inner-city blocks, infill sites and old ground that can hide drainage and soil issues. A pre-slab check catches base-stage mistakes before they’re locked under concrete.
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Our comprehensive service includes everything you need to make an informed decision about your property.
We check the slab set-out against the available documentation and practical site markers, including slab location, edge beam lines and finished surface levels where visible. Correct set-out matters in Brunswick where boundaries can be tight and small errors can create clearance issues, drainage problems or conflicts with existing structures and easements.
We assess the base material placement, general uniformity and preparation quality for the slab system (raft, waffle pod or similar). Poor sub-base prep can lead to differential movement, cracking and uneven floors. We also look for soft spots, excess moisture, debris, and areas that may need rework before concrete goes down.
We inspect formwork stability, dimensions and straightness, including edge beam boxing and rebates where applicable. Quality formwork supports correct slab thickness and beam geometry. On inner-north sites like Brunswick where pours can be staged or access is restricted, boxing errors can be harder to correct once concrete is placed.
We check reinforcement type and placement where accessible, including mesh/lap positioning, bar layout at beams and openings, and the use of chairs/spacers to maintain cover. Correct steel placement helps the slab perform as designed and reduces the likelihood of cracking and durability issues from insufficient cover.
We review the vapour barrier for damage, punctures, laps and taping, and how it’s detailed around penetrations and edges. A continuous membrane is essential to reduce ground moisture migration into the slab, protecting future flooring, skirting and internal finishes—especially important on sites with variable fill or damp subsoil conditions.
We check that plumbing penetrations and sleeves appear correctly located, supported and sealed through the membrane, and that penetrations don’t clash with reinforcement placement. Catching penetrations that are offset, poorly sealed or poorly supported before the pour helps avoid future leaks, slab cutting and patching.
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Get Stage 1 – Pre-Slab (Base Stage) Inspection as part of a comprehensive inspection package
Find answers to the most frequently asked questions about our inspection service.
Book once excavation is complete and the formwork, reinforcement, plumbing/services and vapour barrier are installed, but before any concrete is poured. In Brunswick, pours can be scheduled quickly due to tight site access and staged deliveries, so organise the inspection as soon as you receive a pour date. If possible, allow at least a business day to address any items found.
We assess the base-stage elements that will be hidden after the pour: site preparation, formwork, reinforcement positioning, vapour/moisture barrier continuity, and coordination of penetrations. We also note visible workmanship and compliance risks. We don’t perform engineering design, soil testing, or certify the work as a building surveyor would. If issues are identified, we recommend practical next steps.
Yes. We inspect waffle pod preparations by checking the layout and fit-up that’s visible, edge beam boxing, reinforcement placement where accessible, membrane detailing, and penetrations through the slab area. The goal is to catch common pre-pour issues such as membrane damage, incorrect laps, poor boxing, and reinforcement that may not be supported correctly. We tailor the inspection to what is accessible on the day.
Brunswick projects often sit close to neighbouring footings and fences, and some sites have a history of redevelopment that can leave variable fill and hidden drainage paths. At pre-slab, we pay close attention to set-out near boundaries, sub-base preparation, and moisture control details that affect future flooring. We also look for penetrations and formwork decisions that could create water ponding or difficult-to-fix access issues later.
We document the issue with photos, explain why it matters, and provide clear recommendations you can give your builder immediately. Many pre-slab issues can be fixed quickly (for example, repairing membrane damage, adjusting reinforcement support, or sealing around penetrations). If an item could affect slab performance or compliance, we’ll flag it as urgent so you can decide whether to proceed or delay the pour.
Still have questions?
Get in TouchACE Building and Pest Inspections delivers a focused Stage 1 base-stage report with photos and practical fix lists you can act on fast. Call 0485 857 077 to lock in an inspection time.