Wet Areas
Designing and detailing to ensure water remains within the wet area and to deal with the effects of humidity and moisture.
Lighting, noise and odours
Lighting
Wet area light fittings should be located so they:
- illuminate work surfaces without creating shadows (kitchen bench, vanity top)
- provide light in front of mirrors to illuminate the user (bathrooms).
Light fittings should be durable in a damp environment and not allow moist air to pass into concealed spaces (such as a skillion floor or inter-floor spaces).
Noise
People generally prefer not to be heard – and not to hear others – carrying out ablutions. Location and layout are the main factors in reducing noise from bathrooms and toilets.
Measures to reduce noise transfer:
- Locate WC pans on outside walls wherever possible.
- Avoid locating sanitary fixtures on the wall between a bathroom and habitable room such as bedroom.
- Avoid locating a WC pan on an upper floor where it is directly above a habitable room.
- Avoid locating pipes or services close to bedrooms and living rooms.
- Install tightly fitting doors.
- Install sound-rated insulation in the walls or floor of wet areas adjacent to or above habitable rooms.
Odours
Wet areas provide conditions for mould growth. Odours may be generated by:
- damp towels (bathrooms)
- surfaces that remain wet
- water loss in traps that admit odours from drains
- cooking smells (kitchens).
The most effective way to avoid odours is with adequate ventilation (passive or active) to:
- remove odours such as those generated from cooking
- dry out surfaces to eliminate the conditions for mould growth.

