Compared to roughly 80 per cent in the US, UK and NZ, only 11 per cent of Australian homes have high-performance windows. Installing them can transform a household's comfort, energy use and emissions.
Australia is trailing far behind other countries in installing high-performance windows. Just over 10 per cent of windows in new housing in Australia are high-performance — versus around 80 per cent in the United Kingdom, the United States and New Zealand.We explored the window and residential building industry in Victoria on behalf of Sustainability Victoria. Our aim was to understand the industry and its readiness to scale up the manufacture, sale and installation of high-performance windows.
The builders we spoke to identified some issues around understanding the various window products, such as the relative benefits of different frame materials. For example, uPVC and timber frames typically conduct less heat than aluminium. However, a thermal break can greatly improve aluminium frame performance.
Regulation — Further improve regulations to nudge use of high-performance windows, which could include setting minimum performance requirements for windows as New Zealand has done. Quality assurance — The range of high-performance window options means we need to ensure key intermediaries like energy assessors provide well-informed advice. Support tools such as theWindows for the future
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