How BASIX and NATHERS Affect Window and Door Selection

In Australia, BASIX (Building Sustainability Index) and NATHERS (National House Energy Rating Scheme) are key frameworks that assess the energy efficiency of homes. They significantly impact the selection of windows and doors, as these elements play a vital role in energy consumption, comfort, and sustainability.

BASIX and Window/Door Selection

BASIX sets energy targets for homes, and windows and doors are critical in achieving those goals. High-performance windows and doors with good thermal insulation, such as double-glazing or Low-E glass, help maintain indoor temperatures, reducing the need for heating and cooling. Proper sealing also improves airtightness, preventing drafts and reducing energy loss.

NATHERS and Window/Door Selection

NATHERS rates homes based on thermal performance, which is directly influenced by windows and doors. Double-glazed windows with thermally efficient frames improve a home’s rating, while strategic placement of windows for natural light and ventilation can reduce reliance on artificial heating and cooling. Proper shading and orientation are essential for managing solar heat gain.

Key Considerations

• Glazing: Double glazing improves insulation.
• Frame Materials: Opt for thermally efficient frames (e.g., embedded, thermally broken, timber).
• Sealing: Ensure windows and doors are well-sealed to prevent drafts.
• Shading and Placement: Proper orientation and shading reduce heat gain.
• Ventilation: Good placement of windows promotes natural airflow.

Both BASIX and NATHERS emphasise the importance of selecting energy-efficient windows and doors. By choosing the right products, homeowners and builders can meet energy targets, reduce utility costs, and create more sustainable homes. Browse our selection of thermally efficient windows and doors here.