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.
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The puddle flange ties the floor waste into the membrane.
Height errors leave water either stranded on the membrane or passing around the flange.
Hollow areas mean the membrane or its bed has not bonded, leaving a void that moves.
Finish level at the termination decides how far up the wall protection actually reaches.
AS 3740 governs domestic wet area waterproofing.
More about Austral
- Building a new home in Austral NSW
- Buying a home in Austral NSW
- Growth and development in Austral NSW
- Certifiers, council and building disputes in Austral NSW
- Ground conditions and slabs in Austral NSW
- Weep holes and ground clearance in Austral NSW
- Common building defects in Austral NSW
Written by our local inspection team from work carried out in Austral. Licensed building practitioners.
