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Eltham blocks often sit on sloping, reactive clay soils and tree-dense sites, which makes correct set-out, drainage and slab preparation critical 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 slab area is cleaned, compacted as required and prepared to the correct levels so the slab sits on a stable base. Poor platform prep can lead to slab movement, uneven floors and cracking that’s difficult to rectify after the pour.
We assess formwork alignment, bracing, rebates and edge beam preparation against the plans so the slab footprint is correct and the perimeter is formed properly. Incorrect set-out can cause boundary/encroachment issues and create knock-on problems for framing and brickwork later.
We check mesh and bars are installed in the right locations, overlapped correctly and supported to maintain required cover. If steel sits too low, too high or is poorly lapped, the slab can lose performance and durability—issues that are invisible once concrete is placed.
We inspect the membrane for damage, laps, taping and penetrations to confirm it can reduce ground moisture migrating into the slab. In Eltham’s reactive soils and wetter periods, a compromised membrane can contribute to dampness and long-term floor covering problems.
We check plumbing/electrical penetrations are positioned and sealed appropriately, and that any nominated termite management measures (where applicable) can be completed properly at slab stage. Poorly placed penetrations can clash with framing, while gaps around pipes can become moisture or pest pathways.
We look for practical drainage planning at the slab stage, including how the site is set up to move water away from the building platform. On sloping Eltham sites, unmanaged surface water around the slab edge can increase the risk of foundation movement and damp conditions.
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Find answers to the most frequently asked questions about our inspection service.
Book it after formwork, reinforcement, membranes and service penetrations are in place, but before concrete is poured. In Eltham, weather and site access on sloping blocks can change quickly, so it’s best to schedule as soon as the builder confirms the pour date. This gives time to rectify issues and re-check without delaying the project.
We independently verify key items that are easy to get wrong under time pressure: formwork set-out and dimensions, steel placement and support (cover), mesh overlaps, membrane condition and sealing, and whether penetrations are positioned and sealed appropriately. We also document what we can see with photos so you have a clear record of the base stage before it’s covered.
We don’t re-engineer the slab, but we do cross-check the on-site set-up against the approved drawings and practical requirements for compliance at this stage. If we see signs the site conditions or preparation don’t appear consistent with the documents or good practice, we flag it clearly and recommend the right next step, such as builder clarification or engineering advice.
Yes. On Eltham sites we pay close attention to how the slab platform has been prepared around cut-and-fill areas, whether water will be directed away from the slab edge, and whether the membrane and penetrations are protected from damage during works. Large nearby trees can influence moisture movement in the ground, so controlling surface water and maintaining the barrier are especially important.
You’ll receive a report with photos and clear, actionable items you can forward to your site supervisor. Most pre-slab issues can be corrected quickly—repositioning steel, adding supports, repairing membrane laps, or adjusting formwork—then confirmed again before concrete arrives. The goal is to have a compliant, well-prepared base so you’re not paying to fix defects after the slab cures.
Still have questions?
Get in TouchACE Building and Pest Inspections focuses on the details that matter at base stage—set-out, steel, membrane and drainage—so you can address issues early. Call 0485 857 077 to lock in your Stage 1 – Pre-Slab (Base Stage) Inspection in Eltham.