Wet area waterproofing in Austral NSW

Most people have never heard of a puddle flange, and it is the fitting our Austral wet area findings keep coming back to. It connects the floor waste to the waterproofing membrane, so any water that reaches the membrane is taken into the drain rather than travelling sideways beneath the tiles. Set at the wrong height it fails in one of two directions: too high and the falls run away from it, leaving water sitting on the membrane; too low and water passes around the outside of it entirely. We recorded height problems on several Austral jobs, along with hollow unbonded areas and finish levels short at the termination.

Guides for Austral owners and buyers

20 January 2026 · 7 min read

Cover: the millimetres that decide how long a slab lasts

Concrete between the steel and the weather, measured in millimetres.

3 February 2026 · 6 min read

The shower recess that was never formed

A set down you can create for nothing before the pour, or cut for thousands after it.

17 February 2026 · 7 min read

When the column is not the one on the drawing

A substitution nobody wrote down.

Wet area waterproofing in Austral NSW: common questions

Would a tiler notice?

Sometimes, and a good one raises it. But the tiler arrives to tile, and the incentive is to get on with it. An independent look before the first tile is a different set of eyes with a different job.

When can this be inspected?

In the gap after the membrane cures and before tiling starts. On these builds that window can be two or three days.

Who fixes it?

The builder, coordinating the waterproofer and the plumber. The report gives the location and the clause, which is usually enough.