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Solway blocks often sit alongside established homes and tight driveways, so access, drainage falls and set-out accuracy matter before concrete locks everything in. A pre-slab check helps stop costly corrections once the slab edge beams and services are in place.
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Our comprehensive service includes everything you need to make an informed decision about your property.
We assess whether the building pad looks suitably prepared for the slab stage, including visible fill/compaction indicators, surface condition and whether the platform appears consistent with intended drainage. Poor preparation can lead to slab movement and cracking once the home is built.
We check the formwork is stable, aligned and braced, and that the slab footprint appears consistent with plans on site (where available). Errors in set-out or beam dimensions can affect wall alignment, garage fit, step-downs and boundary clearances.
We inspect visible reinforcement for placement, spacing, overlaps/laps where observable, and whether bars are supported on chairs to achieve intended cover. Reinforcement that sits too low or moves during the pour can reduce slab performance and increase cracking risk.
We check the membrane is present, appears appropriately lapped and taped where required, and is not heavily damaged by foot traffic or trades. A compromised membrane can allow moisture migration that contributes to flooring failures and internal damp issues.
We review visible plumbing and conduit penetrations for location, protection and sealing points prior to the pour. Misplaced penetrations can force cutting the slab later, while poor detailing around penetrations can create moisture paths and termite management complications.
We look for visible provisions that influence how water will move around the slab area, such as temporary or formed falls, drainage points and how the site is managing runoff during construction. In wetter periods, unmanaged water around the slab edge can undermine the base and delay works.
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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 once formwork, reinforcement, the vapour membrane and service penetrations are in place, but before any concrete is poured. In Solway, pours can be scheduled quickly once the base is ready, so it’s best to line up an inspection as soon as you receive the builder’s pour forecast. If the weather turns wet, getting the check done early also helps avoid last-minute changes on site.
Yes, where plans are available on site or provided ahead of time, we’ll compare what’s installed to key layout elements we can reasonably verify at pre-slab stage, such as slab footprint, step-downs, and visible beam/formwork configuration. We’ll note any concerns or items needing clarification with the builder. Some dimensions require survey verification, and we’ll flag when that’s the appropriate pathway.
At pre-slab stage, issues often relate to reinforcement support (chairs missing or inadequate), membrane damage or poor lapping, formwork movement, and penetrations positioned in awkward locations for future bathrooms or kitchens. We also see base-stage drainage concerns, especially where water can pool near slab edges during construction. Catching these early usually means simple adjustments rather than expensive rectification after the pour.
They can, particularly where the site interfaces with established neighbouring levels, existing driveways or garden beds that influence how stormwater flows during construction. If water is allowed to collect around the prepared platform, it can soften the base and create delays or performance issues later. Our Stage 1 inspection focuses on what’s visible at that time—falls, low points, and practical water management—so you can address risks before concrete trucks arrive.
A Stage 1 inspection can note termite management elements that are visible at the base stage, such as whether the slab edge detailing and penetrations appear set up in a way that supports the chosen system. However, termite protection is a specific compliance area that may involve separate documentation, product installation requirements and staged sign-offs. We’ll record what we can see and advise what to confirm with your builder or installer before the pour.
Still have questions?
Get in TouchACE Building and Pest Inspections focuses on the details that matter at base stage—set-out, reinforcement, membrane and penetrations—so you can fix issues while they’re still accessible. Call 0485 857 077.