Sunbury Building
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Waterproofing inspection in Sunbury

Shower and wet area membranes on Sunbury builds are checked after curing and before the first tile is laid.

  • Membrane on and cured, before the tiler starts
  • About 1 hour on site
  • Report within 24 hours
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Fully licensed & accredited

Stage6 of 7
When to bookMembrane on and cured, before the tiler starts
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 Sunbury 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 Sunbury builds

On Sunbury jobs the recurring problem is protection: membranes walked over and marked by other trades before tiling. Elsewhere in the north we have seen membranes applied to unsuitable timber substrates and damaged at floor junctions.

What we find at this stage in Sunbury

  • Membrane left open to foot traffic
  • Debris and marks across the cured surface
  • Membrane damaged at floor junctions
  • Unsuitable substrate under the membrane
  • Water sitting in the bath hob cavity
Water and debris left sitting in the bath hob cavity, found during a waterproofing inspection in Reservoir
Water and debris left sitting in the bath hob cavity, Reservoir
Sample findings

Sample defects found during our waterproofing inspections in Sunbury

Annotated findings from Waterproofing inspections.

Membrane marked by foot traffic and debris before the tiles go down, found during a waterproofing inspection in Sunbury
Membrane marked by foot traffic and debris before the tiles go down
Membrane laid straight onto timber flooring, an unsuitable base, found during a waterproofing inspection in Reservoir
Membrane laid straight onto timber flooring, an unsuitable base, Reservoir
Membrane damaged at the floor junction and needing repair before tiling, found during a waterproofing inspection in Reservoir
Membrane damaged at the floor junction and needing repair before tiling, Reservoir
Split in the membrane that has to be patched before tiling, found during a waterproofing inspection in Reservoir
Split in the membrane that has to be patched before tiling, Reservoir

The other stages of a Sunbury build

  1. Bored piers inspection in Sunbury1Bored piersOnce piers are bored and cages placed, before concrete
  2. Slab pre-pour inspection in Sunbury2Slab pre-pourThe day before concrete, with steel and pods exposed
  3. Frame inspection in Sunbury3FrameWith frame and trusses up and the roof on, before wrap and cladding
  4. Lock-up (pre-plaster) inspection in Sunbury4Lock-up (pre-plaster)Roof, windows and outside doors in, before plasterboard
  5. Fixing inspection in Sunbury5FixingDoors, joinery and mouldings fitted, before painting
  6. Pre-handover (PCI) inspection in Sunbury7Pre-handover (PCI)Around a week before the handover date

All construction stage inspections in Sunbury →

Guides

Construction stage guides for Sunbury

All guides →

Book a waterproofing inspection in Sunbury

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FAQ

Waterproofing inspections in Sunbury: common questions

Why inspect a membrane at all?

Because tiles hide it for the life of the bathroom. A tear or thin spot now becomes a leak into the frame later.

What standard applies?

AS 3740 for waterproofing domestic wet areas, along with the membrane maker's instructions.

Do you flood test?

Not as standard. The inspection is visual. A flood test can be arranged with the builder where it is warranted.

What does protection mean?

Keeping other trades and their materials off the membrane until tiles are laid, so it is not scratched or punctured.

Does this include balconies?

If the membrane is accessible on the day, yes. External membranes follow AS 4654.

How long does it take?

Usually under an hour for a typical home.

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