Research

    Evidence on the performance of window coverings in Australian homes

    Research developed with the Window Shading Association of Australia (WSAA) to quantify the impact of window coverings on residential energy performance and policy outcomes.

    This study combines building simulation modelling and national housing data to evaluate how different window covering strategies influence heating, cooling and overall building performance across Australian climates. The results provide evidence to support industry, policy and energy efficiency programs.

    Why this research matters

    Why window coverings matter for building performance

    Windows are one of the largest sources of heat gain and heat loss in residential buildings. However, the performance impact of window coverings is often under-represented in building models and policy frameworks. This research evaluates the measurable impact of different window covering types on:

    • Heating and cooling loads
    • Energy consumption
    • Building comfort
    • Emissions outcomes

    What the research analysed

    A comprehensive approach to building performance modelling

    Building simulation modelling

    Large sets of building simulations were used to test the performance impact of window coverings across different house types, orientations and climates.

    Climate zone comparisons

    The study evaluates performance outcomes across representative Australian climate zones to understand where window coverings deliver the greatest benefit.

    Policy and industry implications

    The results help quantify how window coverings contribute to building performance — supporting evidence-based discussions for policy frameworks and industry programs.

    Key findings

    What the research found

    • Window coverings significantly reduce cooling loads in warm climates
    • Performance varies depending on glazing type and shading configuration
    • External shading and blinds deliver measurable improvements in energy efficiency
    • Results highlight the importance of including window coverings in building performance modelling

    Industry collaboration

    Developed with the Window Shading Association of Australia

    This research was conducted in partnership with the Window Shading Association of Australia (WSAA) to generate robust evidence on the role of window coverings in residential building performance. The study contributes to ongoing discussions around building performance modelling, energy efficiency frameworks and policy development in Australia.

    The partnership demonstrates how industry peak bodies and technology platforms can work together to generate the evidence base needed for better policy and market outcomes.

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    This research is typically shared with

    • Policy teams
    • Building researchers
    • Industry associations
    • Product manufacturers
    • Energy program managers

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