The BCA outlines the minimum performance requirements that must be met in relation to wet areas. The project documentation should therefore specify that waterproofing systems are to be installed in accordance with the BCA.
A wet area is an area within a building supplied with water and includes bathrooms, showers, sanitary compartments and laundries.
Silicone sealing of all wall and floor junctions, including all internal corners, is recommended to avoid hairline cracks at these junctions. Silicone sealing can be colour matched to tile grout where necessary.
Where such regulation applies, waterproofing should be applied by licensed applicators only. Waterproofers can assist with the recommended type to be used. Considerations such as drying times and the number of coats required for each type will vary.
Occasionally a tank water system is gravity fed only. Plumbing fixtures that are installed on low pressure or gravity feed system should be carefully selected for that purpose. Local statutory authorities should be consulted prior to commencing plumbing work.
Restriction Zones: The regulations of AS3000 use the term ‘restriction zones’ when referring to wet areas. These zones have a direct relationship between the location of an electrical component and the distance to a water-holding device. In essence, the closer together two are, the more stringent the regulations.
The options needed to be considered during the planning stage to manage contaminated air from the bathroom, toilet (where it is a separate compartment), or laundry are:
More popular now in new bathrooms is underfloor heating, which is another form of radiant heat. Hot water piping is embedded in a concrete slab during a new home construction.
Lighting design combines three main functions: background or general lighting, task lighting and accent or feature lighting. General lighting provides room-wide illumination, and can be achieved with wall lights, ceiling pendants and recessed down lights. Task lighting is required for grooming, cosmetic applications, and accent lighting for decorative objects or features.
The basic light sources are: