|As of May 1 2007, new energy provisions of the Building Code of Australia came into effect in WA, setting minimum standards for energy consumption in new homes. This includes provision for glazing, insulation, ventilation and so on.
The objective of the BCA is that the building fabric must meet minimum energy efficiency requirements. The building fabric and the building services combined must meet minimum energy efficiency requirements. The fabric of the building is not likely to be changed for the life of the building and yet features within the building services are often replaced after 10 years. Poor building fabric performance cannot be justified by compensating with additional heating and cooling. The simple message to the industry and consumers is that you spend less on energy if you improve the performance of the building fabric.
In WA, there will now be two methods whereby compliance with these new performance requirements of the BCA can be achieved for housing:
- By applying the Deemed-to-Satisfy Provisions of the BCA Parts 3.12.1 to 3.12.5; or
- By lodging an alternative solution using an appropriate assessment method eg energy rating assessment tools.
The Deemed-To-Satisfy Provisions of parts 3.12.1 to 3.12.5 of the BCA requires the design to be fully specified to comply with the BCA prior to the plan being submitted for approval.