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Updated H1 Energy Efficiency Requirements

MBIE recently released updates to the H1 code clause documents effective 29 November 2021. These updates include more stringent requirements for insulating both residential and commercial building enclosures, with an increase in the minimum required R-value for roofs, walls, floors, and glazing systems. Previous amendments of H1/AS1, H1/AS2, H1/VM1 and H1/VM2 can be used to show compliance for small and large buildings until 2 November 2022 and can be used for building consent applications submitted before 3 November 2022.

There is ongoing discussion within the industry to extend the transition period to adopt the new H1 requirements. With the new requirements known, designers and industry leaders have an opportunity to implement better design solutions immediately without waiting for legal obligations to do so.

KEL will continue to push for better performing building envelopes and help project teams evaluate more robust methods of designing building enclosures including the use of warm roof systems, exterior insulation within cladding assemblies, and thermally broken joinery to meet minimum code requirements.

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