Mambourin Building
Inspections
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Slab pre-pour inspection in Mambourin

Pods, steel, vapour barrier and formwork are all on show for one day. After the concrete truck leaves, none of it can be checked or changed.

  • The day before the pour, while pods, steel and membrane are still on show
  • About 1 hour on site
  • Report within 24 hours
Price your inspectionLeave your details and an inspector will ring you back.

No obligation. We use your details for your quote and may contact you about it even if you don't finish.

Fully licensed & accredited

Stage2 of 7
When to bookThe day before the pour, while pods, steel and membrane are still on show
Time on siteAbout 1 hour on site
Inspected againstAS 2870, AS 3600, NCC Part 3.2, the engineer's slab design and the soil report

What is included in a Mambourin slab pre-pour inspection

  • Slab class and layout checked against the engineer's design and the soil report
  • Edge beam and internal beam depths and widths
  • Reinforcement size, spacing, laps and trench mesh
  • Bar chairs, cover and support so steel does not sit on the ground
  • Waffle pods, void formers and pod spacing
  • Vapour barrier coverage, laps and tape at penetrations
  • Plumbing and electrical penetrations and sleeves
  • Set-downs for wet areas, garage, porch and alfresco
  • Termite management components installed before the pour
  • Formwork alignment, level and set-out against the plans
  • Stormwater pipe cover and pit positions where visible
  • Site cut, fill and pier holes where visible
  • Hot water service and meter box slab extensions formed
  • Trench cleanliness and debris before the pour
Why it matters here

Slab pre-pour inspections on Mambourin builds

On a recent Mambourin pre-pour we found the vapour barrier stopping short of the beams, cover short at the formwork, termite collars missing and reo bars left uncapped. Every one was fixable that afternoon.

What we find at this stage in Mambourin

  • Vapour barrier short of the edge beams
  • Cover to steel below the minimum
  • Termite collars missing at penetrations
  • Star pickets and reo bars uncapped
  • Formwork boards out of line
  • Mud on the reinforcement
Formwork boards out of line, needing extra bracing so the slab edge pours straight, found during a slab pre-pour inspection in Mambourin
Formwork boards out of line, needing extra bracing so the slab edge pours straight
Shower recess not yet formed in the slab with the pour approaching, found during a slab pre-pour inspection in Mambourin
Shower recess not yet formed in the slab with the pour approaching
Sample findings

Sample defects found during our slab pre-pour inspections in Mambourin

Annotated findings from Slab pre-pour inspections.

Vapour barrier stopping short of the edge beams, leaving a path for ground moisture, found during a slab pre-pour inspection in Mambourin
Vapour barrier stopping short of the edge beams, leaving a path for ground moisture
Steel sitting too close to the formwork, so concrete cover falls below the minimum, found during a slab pre-pour inspection in Mambourin
Steel sitting too close to the formwork, so concrete cover falls below the minimum
Termite collars missing from plumbing penetrations through the slab before the pour, found during a slab pre-pour inspection in Mambourin
Termite collars missing from plumbing penetrations through the slab before the pour
Protective caps missing from star pickets and reo bars, a fall injury hazard, found during a slab pre-pour inspection in Mambourin
Protective caps missing from star pickets and reo bars, a fall injury hazard

The other stages of a Mambourin build

  1. Bored piers inspection in Mambourin1Bored piersOnce the piers are drilled and caged, before a drop of concrete
  2. Frame inspection in Mambourin3FrameWhen the frame and trusses are standing and the roof is on, before wrap and cladding
  3. Lock-up (pre-plaster) inspection in Mambourin4Lock-up (pre-plaster)With roof, windows, cladding and outside doors fitted, before insulation is covered
  4. Fixing inspection in Mambourin5FixingWhen doors, mouldings and cabinets are in and the painter has not started
  5. Waterproofing inspection in Mambourin6WaterproofingAfter the membrane cures and before the first tile is laid
  6. Pre-handover (PCI) inspection in Mambourin7Pre-handover (PCI)About a week ahead of the practical completion date

All construction stage inspections in Mambourin →

Guides

Construction stage guides for Mambourin

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Book a slab pre-pour inspection in Mambourin

Instant online pricing, or talk to the booking team on 1300 471 805.

FAQ

Slab pre-pour inspections in Mambourin: common questions

How much notice does a slab inspection need?

One business day is usually enough, but send the pour date as soon as the builder confirms it.

Why does the vapour barrier have to reach the beams?

It stops ground moisture rising into the slab. Where it stops short, the edge of the slab can wick moisture for its whole life.

What is concrete cover?

It is how much concrete sits between the reinforcement and the outer surface of the slab. Too little and the steel can rust and crack the concrete.

Is the slab checked against my engineer's design?

Yes. Beam sizes, steel and set-downs are checked against the slab design and soil report for your lot.

Can the builder pour if items are open?

That is the builder's call, but the report gives them a list to close first.

Is the slab class checked?

We check the design matches the class on the soil report. The class itself comes from the geotechnical engineer.

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