Castle Hill Building
Inspections
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Waterproofing inspection in Castle Hill

The membrane looked at closely before any tile goes over it.

  • Coating dry and the tiler not yet booked in
  • About 1 hour on site
  • Report within 24 hours
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Fully licensed & accredited

Stage6 of 7
When to bookCoating dry and the tiler not yet booked in
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 Castle Hill 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 Castle Hill builds

New Castle Hill homes and duplexes often have three or four wet areas, and every shower is a place for a membrane detail to go wrong. Across the Hills District we keep recording missing bond breakers at wall and floor junctions, pinholes through the coating, puddle flanges not wrapped fully and niches with thin, broken membrane.

What we find at this stage in Castle Hill

  • Bond breaker missing at junctions
  • Pinholes in the membrane
  • Puddle flange not fully covered
  • Niche coating incomplete
  • No water stop at the doorway
Shower floor to wall joint without a bond breaker, letting water puddle, found during a waterproofing inspection in Pennant Hills
Shower floor to wall joint without a bond breaker, letting water puddle, Pennant Hills
Laundry doorway without the water stop angle wet areas require, found during a waterproofing inspection in Kellyville
Laundry doorway without the water stop angle wet areas require, Kellyville
Sample findings

Sample defects found during our waterproofing inspections in Castle Hill

Annotated findings from Waterproofing inspections.

Shower wall junction with no bond breaker under a flexible membrane, found during a waterproofing inspection in Carlingford
Shower wall junction with no bond breaker under a flexible membrane, Carlingford
Pinholes through the shower membrane in a guest ensuite, found during a waterproofing inspection in Kellyville
Pinholes through the shower membrane in a guest ensuite, Kellyville
Membrane not fully wrapping the puddle flange at the floor waste, found during a waterproofing inspection in Pennant Hills
Membrane not fully wrapping the puddle flange at the floor waste, Pennant Hills
Pinholes and small pockets in the membrane inside a shower niche, found during a waterproofing inspection in Carlingford
Pinholes and small pockets in the membrane inside a shower niche, Carlingford

The other stages of a Castle Hill build

  1. Bored piers inspection in Castle Hill1Bored piersPier holes open with cages in, before any concrete arrives
  2. Slab pre-pour inspection in Castle Hill2Slab pre-pourPods, mesh and drainage set out, ahead of the concrete truck
  3. Frame inspection in Castle Hill3FrameWalls standing and trusses fixed, before wrap and lining
  4. Lock-up (pre-plaster) inspection in Castle Hill4Lock-up (pre-plaster)Roof, windows and external doors in, before plaster
  5. Fixing inspection in Castle Hill5FixingJoinery and doors hung, before painting
  6. Pre-handover (PCI) inspection in Castle Hill7Pre-handover (PCI)About two weeks before you take possession

All construction stage inspections in Castle Hill →

Guides

Construction stage guides for Castle Hill

All guides →

Book a waterproofing inspection in Castle Hill

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FAQ

Waterproofing inspections in Castle Hill: common questions

What is a bond breaker?

A strip or sealant at the corner where wall meets floor, so the membrane can stretch across movement instead of tearing.

Are pinholes really a problem?

Yes. Each one is a path for water through the membrane, and they are invisible once tiled.

Which standard applies?

AS 3740 for waterproofing domestic wet areas, together with the National Construction Code.

Is a flood test part of your visit?

No. We inspect it visually and by hand. Flood testing is a separate process the builder can arrange.

Does the waterproofer give a certificate?

Usually, yes. A certificate says the work was done; our inspection looks at whether it can be seen to be done well.

How many bathrooms can you check in one visit?

All of them. A typical visit covers every wet area in the house.

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