Lisa de Kleyn – The Conversation

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May 6, 2025

Cheap overseas, ruinous in Australia: here’s how to make double‑glazed windows the norm

Trivess Moore, RMIT University; Lisa de Kleyn, La Trobe University; Ralph Horne, RMIT University, and Tom Simko, RMIT University

Double-glazing keeps homes at pleasant temperatures without much need for heating or cooling. But history and cost mean they’re rare in Australia.

An infrared image of a home shows the heat loss from windows. Getty Images

September 6, 2023

On hot days, up to 87% of heat gain in our homes is through windows. On cold days, it’s 40% of heat loss. Here’s how we can fix that

Trivess Moore, RMIT University; Lisa de Kleyn, La Trobe University, and Tom Simko, RMIT University

Compared to roughly 80% in the US, UK and NZ, only 11% of Australian homes have high-performance windows. Installing them can transform a household’s comfort, energy use and emissions.

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April 26, 2023

We need a ‘lemon law’ to make all the homes we buy and rent more energy‑efficient

Trivess Moore, RMIT University; Lisa de Kleyn, RMIT University, and Ralph Horne, RMIT University

Improving the performance of nearly 11 million existing homes will make a much bigger difference to housing energy costs and emissions than an incoming 7-star energy standard for new homes.

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