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Lysterfield South blocks are often larger and sloping, and ground movement and drainage control can make or break a slab. We check the base, steel and barriers 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 assess whether the base looks ready for concrete, including excavation profile, cleanliness, and whether there are soft spots, uncontrolled fill, or debris that can reduce bearing and lead to slab movement or cracking.
We inspect slab edge formwork, rebates and step-downs so the slab is formed to plan and practical levels. This matters on Lysterfield South’s sloping sites where incorrect step heights and edge levels can affect brickwork, garage falls and external drainage outcomes.
We check mesh and bar placement, laps, tying and whether reinforcement is properly supported on chairs/spacers. Steel sitting on the ground or incorrectly lapped reduces performance and can contribute to cracking and long-term durability issues.
We look for correct placement, overlaps, taping and penetrations through the membrane. Tears and unsealed laps can allow moisture vapour to move into the slab, which can later affect floor coverings and internal humidity control.
We confirm plumbing/electrical penetrations are positioned and sealed in a way that won’t compromise the membrane or create weak points in the slab. Incorrect set-downs for showers or wet areas are expensive to rectify after concrete is poured.
We review visible indicators that the build is being set up to manage water around the slab, including edge clearances, obvious low points and locations where water can pond. Early identification helps prevent chronic wet areas at the slab perimeter and under-floor moisture migration.
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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 it for after the formwork, vapour barrier and steel reinforcement are installed and before concrete is poured. In Lysterfield South, builders often program pours quickly once the base is ready, so organise the inspection as soon as you’re told “steel is down” or you receive a pour date. We’ll help you time it so any fixes can be completed without delaying the pour.
Sloping sites commonly introduce step-downs, deeper edge beams, and cut-and-fill zones. During Stage 1 we pay close attention to formwork levels, step details, reinforcement continuity at changes in level, and areas where water may run or pond during rain. Catching issues here helps prevent uneven bearing, moisture entry at slab edges, and avoidable rework after the slab is poured.
We’re not performing laboratory compaction testing or geotechnical engineering assessments, but we do assess whether the base appears consistent and suitably prepared for the pour. We also check for obvious signs of uncontrolled fill, soft spots, waterlogged areas, and base conditions that should be queried with the builder or engineer. If concerns are identified, we’ll recommend the right next step before proceeding.
Yes. With larger blocks, changing site levels and fast surface runoff during heavy rain, a well-installed vapour barrier and properly managed slab edges become critical. Stage 1 checks the membrane for tears, unsealed overlaps and poorly sealed penetrations, because these are common weak points once multiple trades have been on the base. Fixing membrane defects pre-pour is straightforward; post-pour it’s not.
You’ll receive a detailed report with photos and clear, actionable recommendations that you can send directly to your builder or site supervisor. We list what we observed, why it matters, and what should be corrected or confirmed before concrete is placed. The goal is to give you a practical document you can use to request rectification and to track that items are addressed before the pour proceeds.
Still have questions?
Get in TouchACE Building and Pest Inspections focuses on the high-risk pre-pour details—base prep, steel, and moisture barriers—so you can address issues early. Call 0485 857 077 to schedule your Stage 1 inspection.