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GreenStuf
Clause H1 Energy Efficiency continues to shape how new homes are designed across Aotearoa. For commercial new builds under 300m², meeting the updated requirements often means making early, well‑informed decisions about the thermal envelope.
While the compliance pathways are clearly defined, the practical challenge lies in translating regulation into buildable, cost‑effective design. For architects, having the right technical support early in the process can make all the difference.
This is where Greenstuf’s approach stands out — supporting architects not just with insulation products, but with hands‑on guidance, including an H1 Compliance Toolkit and free H1 calculations tailored to your project to help deliver high‑performance homes.
Turning compliance into a design tool
Under H1, designers can follow the Calculation or Modelling Methods. Each pathway presents different opportunities and limitations, particularly for smaller homes where space, budget, and construction simplicity are paramount.
Greenstuf works alongside architects to help assess which pathway best suits the project and how insulation strategies can be optimised accordingly. By considering wall, roof, and floor performance together, architects can often avoid over‑specification elsewhere, retaining design freedom while still achieving compliance.
Rather than treating insulation as a late‑stage specification item, Greenstuf encourages performance considerations from the concept stage — when changes are easier and more cost‑effective to make.
Technical support when it matters most
One of Greenstuf’s key strengths is early‑stage technical input. The team regularly assists with preliminary R‑value strategies, helping architects balance thermal performance with constructability and cost.
For projects using the Calculation Method, Greenstuf can support accurate material inputs and realistic performance assumptions, reducing the risk of redesigns at the consent stage. This collaborative process helps architects move forward with confidence, knowing their thermal strategy aligns with real‑world construction.
Beyond minimum requirements
While H1 sets minimum standards, many architects are designing well beyond compliance. Greenstuf supports this ambition by offering guidance on wider building performance considerations, including moisture management, airtightness and thermal bridging.
These elements may sit outside the strict H1 calculation but play a crucial role in occupant comfort, durability, and long‑term energy efficiency.
Supporting outcomes on site
Clear documentation and reliable installation are essential to achieving the performance specified at the design stage. Greenstuf provides technical literature and installation guidance that helps architects communicate intent clearly to builders.
As energy efficiency expectations continue to rise, Greenstuf’s combination of locally made insulation and practical design support is helping architects deliver warmer, healthier homes that meet today’s H1 requirements — and tomorrow’s expectations.
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