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Ivanhoe blocks often mix established streetscapes with knock-down rebuilds on reactive clay soils and sloping sites toward creek corridors—your pre-slab check is the best chance to verify set-out, drainage and reinforcement before concrete locks everything in.
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Our comprehensive service includes everything you need to make an informed decision about your property.
We check the base is properly prepared, compacted where required, and suitable for the slab/footing system. On Ivanhoe’s sloping blocks, we pay close attention to how the pad is formed and whether the ground conditions and levels appear consistent with the intended design to reduce the risk of differential movement.
We verify the formwork set-out and key dimensions that can be assessed at this stage, including slab edge alignment and rebates where applicable. This helps prevent avoidable boundary, setback or layout problems and reduces the chance of rework once framing begins.
We assess whether the formwork is secure, braced and shaped correctly for slab thickening, beams and step-downs. Correct formwork is essential for achieving the designed slab geometry, particularly on split-level designs that are common where Ivanhoe sites fall away from the street.
We inspect reinforcement size/placement where visible and practical, including laps, clearances, trench mesh positioning and the use of chairs/bar supports. Correct placement helps the slab perform as designed and reduces cracking risks caused by steel sitting too low, too high or being displaced during the pour.
We check the membrane is continuous, correctly lapped and taped where required, and turned up at penetrations and edges where applicable. We also look for punctures and poor detailing around services, because once concrete is poured, membrane defects can contribute to moisture migration through the slab.
We review plumbing/electrical penetrations for placement, sealing and protection, and look at slab edge details that can affect durability and moisture control. Early identification reduces the chance of poorly located pipes, unsealed penetrations or edge detailing that later interferes with flooring and waterproofing.
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Professional inspections with attention to every detail. Here's a glimpse of our work.
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Find answers to the most frequently asked questions about our inspection service.
Book it once the formwork is up, reinforcement is installed, and the vapour barrier and service penetrations are in place—but before concrete is poured. In Ivanhoe, pours can be scheduled quickly once the site is ready, so it’s best to organise the inspection as soon as you know the steel fix date. That timing lets any corrections be made without delaying subsequent stages.
Yes. Reactive clay can expand and contract with seasonal moisture changes, which increases the slab’s reliance on correct base preparation, reinforcement placement and slab geometry. A pre-slab inspection helps confirm the visible elements are consistent with the design intent and that key details like steel support and membrane installation haven’t been compromised on-site. It’s a practical way to reduce avoidable movement-related issues.
Surveyor involvement is important, but it doesn’t always mean every detail is checked for workmanship, damage or on-site changes. We often see issues such as displaced mesh, insufficient bar supports, poorly taped membrane laps, punctures from foot traffic, or service penetrations that aren’t neatly sealed. Our report focuses on build-quality and practical risks at the base stage, not just minimum compliance.
They can be. On sloping allotments, the cut/fill strategy, step-downs, slab edge heights and temporary site drainage all become more critical. If levels or formwork detailing are off, it can affect how water drains away from the future home and can complicate subsequent framing and brickwork. A pre-slab inspection checks visible level-related setup and the formwork configuration before it’s locked in by concrete.
Yes. We document what we observed on-site, include photos, and provide actionable recommendations that your builder or trades can address prior to concrete placement. Where a detail needs confirmation against engineering or plans, we’ll clearly state what to cross-check and why it matters. The aim is to give you a practical checklist to resolve items quickly and keep the project moving.
Still have questions?
Get in TouchACE Building and Pest Inspections focuses on the base-stage details that matter on Ivanhoe sites—set-out, steel, membrane and drainage readiness. Call 0485 857 077 to lock in your Stage 1 inspection.