To prevent water penetration of roofs which could cause unhealthy and dangerous conditions or loss of amenity for occupants or dampness and deterioration of building elements.
F2D2 Wet area construction
F2D2 requires that certainareas designated as “wet areas” be made impervious to water. This applies to showers, floors and walls adjacent to baths, tubs or laundry troughs, basins, sinks and urinals. The aim is to protect adjacent areas from damage by water splashed from these fixtures.
Adoption of AS 3740 — F2D2(1) and (2)
Class 2 and 3 buildings and Class 4 parts of buildings must be impervious to water in accordance with the design and construction requirements of AS 3740 in the locations listed in Specification 26.
Similar design and location requirements apply for a bathroom, shower room, slop hopper, sink compartment, laundry or sanitary compartment in a Class 5, 6, 7, 8 or 9 building. Specification 26 determines when a building element is required to be waterproof or water resistant, while how to make the building element waterproof or water resistant is determined by AS 3740.
The defined terms for shower area, vessel, waterproof, water resistant and wet area are located under Schedule 1.