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Major upgrade to H1 announced

Changes mandatory Nov 2022.
The Ministry of Business, Innovation and Employment says the new updates to minimum insulation requirements aim to reduce energy needed to heat new homes by up to 40%. “The changes go as far and as fast as is achievable using current insulation products and construction design and practices.”
There are now six climate zones.
Minimum construction R-values are significantly increased in some instances. Under the Schedule Method, the minimums are now R6.6 for the roof in all climate zones, with windows and door minimums R0.46 in the four warmest climate zones and R0.50 in the two coldest climate zones. (Skylight requirements are higher in the four colder zones.)
The changes become mandatory in November 2022, although the new window insulation requirements in the warmest climate zones have a 2-step increase. Between 3 November 2022 and 2 November 2023, the minimum construction R-value for windows and doors in climate zones 1 and 2 is R0.37. After 2 November 2023, it rises to R0.46.
The Schedule, Calculation and Modelling methods of demonstrating compliance still remain, but are now included In H1/AS1 (Schedule and Calculation) and H1/VM1 (Modelling) rather than in a separate standard.
The scope of H1/AS1 covers housing, and buildings other than housing less than 300 m2.
You can find the details here.



Help for businesses to go circular

Cutting waste, pollution and emissions.

Many businesses operate on a linear “take-make-waste” model, but there is growing support for businesses – including construction businesses – to move to a low carbon circular economy.

The Go Circular 2025 programme was recently launched to provide practical tools and resources.

One of the project partners is Āmiomio Aotearoa, an initiative that includes universities, SCION, Manaaki Whenua Landcare Research, BRANZ and several international partner organisations.

You can read more about Go Circular 2025 here and about Āmiomio Aotearoa here.




Construction in Sustainability Awards

Finalists from across the sector.

The Sustainable Business Awards have been running for 19 years. This year’s finalists include a strong showing from the construction sector. Among the finalists are:

Change Maker Award

Felila Neama Taufa, Social Engagement Lead/Junior Engineer, TROW. Felila set up a template to salvage as much construction material as possible from every project. She is the driving force behind TROW’s most successful deconstruction projects.

Climate Action Innovator Award

Golden Bay Cement has used waste wood for more than 17 years to help reduce its coal use and emissions. In March 2021 it opened its upgraded cement plant in Whangārei which burns waste tyres. Recycling the steel from waste tyres also prevents the mining of 5,000 tonnes of iron sand for use in cement. Golden Bay Cement plans to use up to 3.1 million waste tyres per year – half of the nation’s output.

Climate Action Leader

Fletcher Building has a goal is to reduce its emissions by 30% by 2030. Overall emissions in the 2020 financial year were 8% lower compared to 2018. It has set a target to gain Environmental Product Declarations to verify the embodied carbon for all its major products.

Communicating for Impact

NZ Panels Group launched Track My Tree to provide a fully documented chain of custody for every logged tree made into veneer panels. Track My Tree assigns each logged tree with a unique code. Customers can enter this into a database to view the product’s verified origin. Track My Tree promotes veneer panels as a more sustainable option than solid timber – one cubic metre of solid timber yields 900 square metres of veneer.

Social Impactor

Isthmus Group is an integrated design studio. Engaging with and fully embracing mātauranga Māori is a core part of its current strategy and it is  gradually weaving kaupapa Māori into its design philosophy and practice. Earlier this year Isthmus Group launched Te Kāpehu, a navigational design tool for making conscious choices about how its projects can uplift the mauri of people and the environment.

TROW Group is one of the largest commercial deconstruction companies in Aotearoa New Zealand. It donates quality construction materials and office furniture from deconstruction projects to iwi/hapu, schools, church groups, and smaller businesses. Remaining materials are shipped to the Pacific to help rebuild and furnish cyclone-prone nations. Currently the business is focused on Auckland but plans to extend its service across Aotearoa New Zealand and throughout the Pacific.

The 2021 winners will be announced at an online Awards ceremony on 25 November 2021. You can find more details here.




Carbon tools, seminar coming soon

BRANZ has a suite of new carbon tools that it will release to the industry shortly.

BRANZ is also running a seminar “The Carbon Challenge: Science and solutions” around the country, from Whangarei to Invercargill, between 1 November and 2 December. You can find more information about the seminar here and register and pay here.