AS 3740:2021 Waterproofing of Domestic Wet Areas 2.3.4: 2.3.4 Category 3 floors without a floor waste

Where there is no floor waste, the shower must be an enclosed shower. No fall is required in the Category 3 area, but water must be kept within the wet area; notes suggest local falls away from doors and point to AS 3958.1 for laying tiles so they drain.

Maintained by Gerard Blokdyk

Other controls in Section 2: Design – AS 3740:2021 Waterproofing of Domestic Wet Areas

2.1.1 2.1.1 Design principles: retaining water in the Category 1 area
2.1.2 2.1.2 Material selection: compatibility and resistance to movement and exposure
2.2.1 2.2.1 Enclosed showers: screen prevents water spreading
2.2.2 2.2.2 Unenclosed showers: Type 1 and Type 2 classification
2.3.1 2.3.1 Falls in the substrate under the membrane
2.3.2 2.3.2 Falls in shower floor finishes (Category 1)
2.3.3 2.3.3 Falls in Category 2 floors next to a shower where a floor waste is fitted
2.3.5 2.3.5 Whole bathroom designed as an unenclosed shower

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MCP endpoint All AS 3740:2021 Waterproofing of Domestic Wet Areas controls