Tag: NatHERS

  • Don’t Get Cold Feet: Why Slab Edge Insulation Is Often a Mandatory Must-Have

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    Posted on February 10th, 2026 / V-Star Energy If you’re planning a new build in Australia, the term “concrete slab edge insulation” has likely appeared on your energy efficiency plans. A common question we hear is: “Do we really need this? Can we remove it to save cost?” At V-Star Energy, we understand this query. The answer…

  • NCC 2025 Preview: Key Changes for Builders and Developers

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    Posted on February 5th, 2026 / V-Star Energy The Australian Building Codes Board (ABCB) has released its much-anticipated NCC 2025 preview, setting the direction for the next wave of building regulations. While this is a preview and details may evolve before the final publication, the core priorities are clear. At V-Star Energy, our first read is…

  • Window-to-Wall Ratio

    Window-to-Wall Ratio

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    The ideal percentage of glazing to wall—often referred to as the window-to-wall ratio (WWR)—depends on several factors, including the building’s orientation, climate, and intended use. Here’s a general guideline for different orientations: North-Facing Walls: South-Facing Walls: East-Facing Walls: West-Facing Walls: General Considerations: These percentages are starting points and should be adapted based on specific design…

  • NCC 2022 State Extensions

    NCC 2022 State Extensions

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    In addition to our post on Victoria‘s decision to extend the implementation of NCC 2022 Energy Efficiency provisions to 1 May 2024, other states have also announced date extensions. Here’s the current run down: New South Wales – new homes contracted before 1st October 2023 are exempt from the new sustainable building (BASIX) standards until…

  • NCC 2022 Release

    NCC 2022 Release

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    The much-anticipated National Construction Code (NCC) 2022 rule changes have been approved by Building Ministers. NCC 2022 is scheduled to be published on the 1st October 2022, with an expectation that States and Territories will adopt the new rules from 1 May 2023, with transition periods for new livable housing requirements, new energy efficiency and…

  • NatHERS Heating and Cooling Load Limits

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    In addition to meeting the minimum 6-star energy rating, the heating and cooling energy load must not exceed the threshold set by the Australian Building Codes Board (ABCB). Click here to see heating and cooling load threshold for your climate zone. https://www.abcb.gov.au/Resources/Publications/Education-Training/NatHERS-heating-and-cooling-load-limits