Austral Building
Inspections
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Waterproofing inspection in Austral

The membrane checked while it is still a membrane and not a floor.

  • After the membrane is applied and before any tile is laid
  • About 1 hour on site
  • Report within 24 hours
Price your Austral inspectionGive us the address and the stage.

Fully licensed & accredited

Stage6 of 7
When to bookAfter the membrane is applied and before any tile is laid
Time on siteAbout 1 hour on site
Inspected againstAS 3740 (waterproofing of domestic wet areas), AS 3958 (tiling), NCC Volume Two Part 10.2

What is included in a Austral waterproofing inspection

  • Membrane coverage across the floor and up the walls
  • Wall upturn heights at the shower and against hobs
  • Hob, threshold and step-down details
  • Bond breakers at wall and floor junctions
  • Floor waste flange bedded and sealed to the membrane
  • Falls to the floor waste and shower screed
  • Penetrations for taps, wastes and shower rails sealed
  • Membrane cure, damage and coverage before tiling
  • Primer and substrate preparation where visible
  • Set-down depth against the finished floor level
  • Junctions to baths, screens and vanities
  • Laundry, powder room and ensuite treated to the same standard
Why it matters here

Waterproofing inspections on Austral builds

The Austral wet area findings concentrate on one fitting more than any other: the puddle flange. We have recorded flanges set at the wrong height repeatedly, which either strands the waste above the falls so water cannot reach it, or drops it below the membrane termination so water travels around it. Add hollow sounding areas where the membrane has not bonded and finish levels short at the termination, and the pattern is a wet area that will not drain the way it was drawn.

What we find at this stage in Austral

  • Puddle flange set at the wrong height
  • Puddle flange type or installation not compliant
  • Hollow or unbonded areas in the membrane
  • Finish level short at the membrane termination
  • Falls not directing water to the waste
Further hollow area in the wet area, Austral
Further hollow area in the wet area
Sample findings

Sample defects found during our waterproofing inspections in Austral

Annotated findings from Waterproofing inspections on Austral builds. Client addresses withheld.

Puddle flange height, recorded during a fixing stage inspection in Austral
Puddle flange at the wrong height
Puddle flange height, recorded during a fixing stage inspection in Austral
A second flange set incorrectly
Hollow area to waterproofing, recorded during a fixing stage inspection in Austral
Hollow area beneath the membrane
Finish level to waterproofing, recorded during a fixing stage inspection in Austral
Finish level short at the termination

The other stages of a Austral build

  1. Bored piers inspection in Austral1Bored piersAfter boring and cage placement, before concrete
  2. Slab pre-pour inspection in Austral2Slab pre-pourThe day before the pour, steel and formwork complete
  3. Frame inspection in Austral3FrameOnce frame and trusses are up and the roof is on, before lining
  4. Lock-up (pre-plaster) inspection in Austral4Lock-up (pre-plaster)After roof, cladding and external doors, before plaster
  5. Fixing inspection in Austral5FixingAfter mouldings, doors and joinery, before the painter
  6. Pre-handover (PCI) inspection in Austral7Pre-handover (PCI)Two to three weeks before your handover date

All construction stage inspections in Austral →

Guides

Construction stage guides for Austral

All guides →

Book a waterproofing inspection in Austral

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

FAQ

Waterproofing inspections in Austral: common questions

What is a puddle flange?

The collar that connects the floor waste to the waterproofing membrane, so water reaching the membrane is taken into the drain rather than travelling sideways under the tiles.

Why is its height so important?

Because it decides whether water arrives. Too high and the membrane falls away from it, leaving water sitting on the membrane. Too low and water passes around the outside of it.

What does hollow mean here?

That the membrane or the bed beneath it has not bonded, so there is a void. Voids move, and a membrane over a moving void is a membrane waiting to split.

Which standard applies?

AS 3740 for domestic wet area waterproofing, read with the National Construction Code and ABCB Housing Provisions, alongside your contract and the tolerances guide.

Do you flood test?

No. Flood testing breaks into the finished work and belongs to the waterproofer's own quality process. Our assessment is by eye and by hand.

And if tiling is already underway?

We assess what remains open and record which areas were already covered and therefore not seen.

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