Mambourin Building
Inspections
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Waterproofing inspection in Mambourin

The membrane is checked once it has cured and before tiles cover it. A leaking shower almost always traces back to something visible at this moment.

  • After the membrane cures and before the first tile is laid
  • About 1 hour on site
  • Report within 24 hours
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Fully licensed & accredited

Stage6 of 7
When to bookAfter the membrane cures and before the first 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 Mambourin 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 Mambourin builds

Bond breakers missing where the shower floor meets the waterstop, cement set hard in the floor waste and damaged membrane are the items we see across Melbourne's west. Under tile they become a leak years later.

What we find at this stage in Mambourin

  • No bond breaker at the waterstop
  • Membrane torn or damaged
  • Cement debris in the floor waste
  • Membrane left unprotected from trades
  • Hob height not confirmed
  • Upturns short at wall junctions
Hob height to confirm so finished tiles sit 15mm above it, found during a waterproofing inspection in Lara
Hob height to confirm so finished tiles sit 15mm above it, Lara
Sample findings

Sample defects found during our waterproofing inspections in Mambourin

Annotated findings from Waterproofing inspections.

Inadequate bond breaker where the shower floor meets the waterstop, found during a waterproofing inspection in Lara
Inadequate bond breaker where the shower floor meets the waterstop, Lara
Waterproofing membrane damaged and needing repair before any tiles go down, found during a waterproofing inspection in Taylors Hill
Waterproofing membrane damaged and needing repair before any tiles go down, Taylors Hill
Hardened cement inside the shower drain, with a blockage close, found during a waterproofing inspection in Lara
Hardened cement inside the shower drain, with a blockage close, Lara
Membrane left open to damage before tiling and needing protection, found during a waterproofing inspection in Thornhill Park
Membrane left open to damage before tiling and needing protection, Thornhill Park

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. Slab pre-pour inspection in Mambourin2Slab pre-pourThe day before the pour, while pods, steel and membrane are still on show
  3. Frame inspection in Mambourin3FrameWhen the frame and trusses are standing and the roof is on, before wrap and cladding
  4. Lock-up (pre-plaster) inspection in Mambourin4Lock-up (pre-plaster)With roof, windows, cladding and outside doors fitted, before insulation is covered
  5. Fixing inspection in Mambourin5FixingWhen doors, mouldings and cabinets are in and the painter has not started
  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

All guides →

Book a waterproofing inspection in Mambourin

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

FAQ

Waterproofing inspections in Mambourin: common questions

What is a bond breaker?

A strip or sealant that lets the membrane flex at a corner or waterstop instead of tearing as the house moves.

Which standard covers waterproofing?

AS 3740 for domestic wet areas, along with the NCC.

Once tiles are down, can anyone still check the membrane?

Only by removing tiles. Moisture readings later can show a leak but not why.

Will you flood test the Mambourin shower base?

No. The inspection is visual, against the standard and the manufacturer's system.

How long does it take?

Usually under an hour for a typical house with two or three wet areas.

Is this separate from the fixing inspection?

It can be booked on its own or alongside fixing, depending on where the build is.

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