Wet area waterproofing in Pakenham East VIC

Wet area rectification is the single most expensive defect category in new homes, because putting it right after tiling means taking the room apart. Almost everything we record is in the detailing rather than the field of the membrane: bandages laid over a junction without being embedded in the coats, coverage stopping short of the required height in a shower recess, water stop angles missing at a doorway or set wrong at a bath, an outlet lug not properly sealed. The inspection that prevents all of it takes about an hour and has to happen before the tiler starts.

AS 3740 governs waterproofing of domestic wet areas, alongside the NCC and Housing Provisions.

Bandages reinforce junctions and only work when embedded within the membrane coats.

Water stop angles at doorways stop water tracking out of the wet area into the room beyond.

Flood testing is intrusive and belongs to the waterproofer, not to a visual inspection.

Once tiles are down the membrane cannot be inspected, only its failure observed later.

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Written by our local inspection team from work carried out in Pakenham East. Licensed building practitioners.

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Wet area waterproofing in Pakenham East VIC: common questions

When exactly should the wet areas be inspected?

After the membrane is applied and cured and before any tile goes down. On these builds that window is often only a few days, so book it as soon as the waterproofer is scheduled.

What does a failure actually look like later?

Usually a damp skirting or a stain on the wall of the adjoining room, one or two years in. By then the remedy is removing the tiles and the screed and starting the wet area again.

Is the builder or the waterproofer responsible?

The builder, as a matter of coordinating their own trades. The report gives them the location and the clause, which is generally enough for it to be redone before the tiler arrives.