Tarneit Building
Inspections

Lock-up and waterproofing inspections in Tarneit: before the plaster and tiles hide it

Flashings, wall wrap, brick ties and mortar joints at lock-up. Membranes, upturns and falls before tiling. Two checks that prevent most water problems.

Owner Inspections · Tarneit 3029 · 2026-08-22

In short: Lock-up (pre-plaster) catches flashing, wrap and brickwork faults. Waterproofing catches membrane and fall problems under bathroom tiles. Both are cheap now and expensive after handover.

Lock-up (pre-plaster)

After brickwork, windows and roof, before plasterboard. We check window and door flashings, wall wrap and sarking, weep holes and articulation joints, mortar joints and brick ties to AS 3700, roof battens and tile fixing, and services in the roof space.

Waterproofing

Before wall and floor tiles go on in wet areas. We check membrane coverage, wall upturn heights, hob and threshold details, falls to the floor waste, bond breakers and floor waste flanges to AS 3740.

Why Tarneit builds need these

Fast programs mean flashings and membranes are the trades most often rushed. Water entry at windows and shower leaks are the two most common warranty claims we see on Tarneit homes under five years old.

Booking both

Lock-up and waterproofing are usually one to three weeks apart. Book both when you book frame and we schedule around the builder's program.

Written by the Owner Inspections team from inspections carried out in Tarneit. Licensed building practitioners, Building & Plumbing Commission registration CDB-U 53425.

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FAQ

Questions Tarneit owners ask about this

Is waterproofing a separate stage?

Not in most contracts, which is why owners miss it. It falls between lock-up and fixing and must be inspected before tiling.

What if the membrane is already tiled over?

We test with a moisture meter and thermal camera, but coverage can no longer be verified. Booking before tiling is the only way to see it.

Does this apply outside Tarneit?

The standards apply across Victoria. The local detail here, soil, builders and council process, is specific to Tarneit and the Wyndham growth corridor.

Who can I ask about my own property?

Call 1300 471 805 or use the quote form and add your question in the comments. A licensed inspector will answer.

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