Technical Bulletin

Waterproofing in Wet Areas

KBDi Technical Bulletins cover NCC and Australian Standard related issues in an easy-to-read, to-the-point format.

Waterproofing of wet areas has consistently been one of the most commonly recurring major defects reported to Australian building regulators. When waterproofing has been poorly installed and/or drainage is inadequate (with insufficient falls, floor wastes or grates), water or dampness may penetrate and damage the structure of the building, creating enormous problems for the homeowner.

*Note: updated version 15112023B replaces version 15112023A and version 230922A

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