Wollert Building
Inspections
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Slab inspection in Wollert

A slab inspection is the last look at your footing system before the pour. We check set-out, beams, pods, steel, cover, the vapour barrier and every penetration through it.

  • The day before the pour, while the steel and pods are still exposed
  • About 1 hour on site
  • Report within 24 hours
Get your Wollert inspection priceInstant price. No obligation. Same-week bookings.

Fully licensed & accredited

Stage2 of 7
When to bookThe day before the pour, while the steel and pods are still exposed
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 Wollert 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 Wollert builds

Reactive clay over basalt moves through the year, swelling after a wet winter and shrinking back through a dry Wollert summer. The slab is what carries that movement, so beam depth, beam width and correct steel are not details. Your lot's soil report sets the classification and the slab design follows from it.

What we find at this stage in Wollert

  • Bar chairs missing or too far apart, letting the mesh sag out of position
  • Not enough concrete cover to the steel at edge beams and slab corners
  • Waffle pods out of line, leaving internal beams narrower than the plan
  • Vapour barrier torn or unlapped, with tape missing at pipe penetrations
  • Set-downs to showers, the garage or the porch missing or too shallow
  • Service penetrations crowded together and cutting through a beam cage
Slab mesh matches the size shown on the drawings, Wollert
Slab mesh matches the size shown on the drawings
Kitchen service penetrations needing sealing and patching, Wollert
Kitchen service penetrations needing sealing and patching
Sealing and flashing around the windows not finished, Wollert
Sealing and flashing around the windows not finished
Sample findings

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

Annotated findings from Slab pre-pour inspections on Wollert builds. Client addresses withheld.

Loose waffle pods needing to be fixed down before the concrete goes in, found during a slab pre-pour inspection in Wollert
Loose waffle pods needing to be fixed down before the concrete goes in
Electrical meter box installed but not sitting plumb, found during a slab pre-pour inspection in Wollert
Electrical meter box installed but not sitting plumb
N16 bars missing where the top slab mesh is cut for service penetrations, found during a slab pre-pour inspection in Wollert
N16 bars missing where the top slab mesh is cut for service penetrations
Service penetrations through the moisture barrier not taped or sleeved, found during a slab pre-pour inspection in Wollert
Service penetrations through the moisture barrier not taped or sleeved
Sewer and stormwater pipes left uncapped, so debris can fall in and block them, found during a slab pre-pour inspection in Wollert
Sewer and stormwater pipes left uncapped, so debris can fall in and block them

The other stages of a Wollert build

  1. Bored piers inspection in Wollert1Bored piersOnce the holes are bored and the cages are in, before any concrete goes near them
  2. Frame inspection in Wollert3FrameOnce the trusses are up, before wrap, sarking or cladding hides anything
  3. Lock-up (pre-plaster) inspection in Wollert4Lock-up (pre-plaster)After roof, windows and brickwork, before the plasterer arrives
  4. Fixing inspection in Wollert5FixingAfter plaster, doors and cabinetry, before the painter starts
  5. Waterproofing inspection in Wollert6WaterproofingAfter the waterproofer finishes and before a single tile is laid
  6. Pre-handover (PCI) inspection in Wollert7Pre-handover (PCI)At practical completion, before you sign anything or hand over the final payment

All construction stage inspections in Wollert →

Guides

Construction stage guides for Wollert

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Book a slab pre-pour inspection in Wollert

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FAQ

Slab pre-pour inspections in Wollert: common questions

How much notice do you need for a slab inspection?

Three to five working days is usually plenty. The steel is generally complete a couple of days before the pour, and that window is when the slab can still be inspected and corrected.

What standard applies to a residential slab?

AS 2870 covers residential slabs and footings, along with the engineer's own drawings for your lot. We compare what is on the ground to those documents and to the Guide to Standards and Tolerances 2015.

Can the pour still go ahead if you find something?

Often yes. Most slab findings are small fixes such as adding chairs, taping the membrane or repositioning steel, and a crew can do them in an hour. We report quickly so the builder has time.

Why does the vapour barrier matter so much?

It keeps ground moisture out of the slab and out of your floor coverings. Once concrete covers a torn or unsealed membrane there is no practical repair, so it has to be right beforehand.

Do you test the concrete?

No. We do not test concrete, take samples or measure strength. Our inspection is visual and by hand, looking at what has been set up before the pour and reporting it with photographs.

Is a slab inspection worth it if the surveyor also inspects?

Yes. The registered building surveyor inspects for permit purposes at set stages and does not act for you. Our report is written for the owner and covers workmanship the mandatory inspection does not.

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