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Energy systems | Climate action | Circularity I Sustainable finance I Resilience I Healthy happier kiwis and a better Aotearoa New Zealand

Two significant findings revealed yesterday 1️⃣ ▶ New Zealand Certified Builders Association released the research they completed with YourQS Limited & Designgroup Stapleton Elliott They found H1 insulation costs were significantly less than some suggested It was covered off in this article from The Post https://lnkd.in/gUTCHwJ5 2️⃣ ▶ Useful research from Auckland Council setting out that medium density homes were overheating. They reason "over glazing, lack of adequate ventilation & shading”. Will post the study in the comments https://lnkd.in/gmGjxKTV Enjoyed the discussion last night on Wallace Chapman's The Panel with Leonie Freeman and Chris Wikaira where we discussed how modelling a home can ensure comfort & less overheating. Overheating risks are rising. It pays to spend a bit of time modelling your home to check it won’t be uncomfortable for your whanau. Here is the radio interview https://lnkd.in/gmGjxKTV Many designers already use Homestar, Passive House, Design Builder, IES, ECCHO or other modelling methods to deliver more comfortable homes. Each week homes and apartments will be built that will overheat. Lets take this opportunity to move away from the schedule method & deliver better homes for NZ whanau. We have the solutions. Let’s use them #health NZGBC #carbon #homes #overheating #housing #mediumdensity

The Press

The Press

thepress.co.nz

Andrew E.

Energy systems | Climate action | Circularity I Sustainable finance I Resilience I Healthy happier kiwis and a better Aotearoa New Zealand

3mo

Here is the Auckland Council Medium Density Study, released this week which found many residents of medium density were experiencing overheating https://knowledgeauckland.org.nz/publications/life-in-medium-density-housing-in-tamaki-makaurau-auckland/

The latest climate modelling from MfE, NIWA and IPCC (using the mid-range scenario and period 2041-2060) suggests many areas will have over 33% more cooling days per year (a little over 15y away). Reducing the H1 insulation requirements is non-sensical and does not stand up to engineering or financial analysis! https://map.climatedata.environment.govt.nz/ Recent energy analysis of a 3 storey commercial building we are renovating showed cooling is already the dominant building design/energy consideration.

Did the research include change in framing to allow for larger insulation volumes.

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The different methods need better explanation and made simple. How about a few infographics in some key media areas: Facebook, mainstream, LinkedIn. The Business Desk item is not simple enough and I am not sure the designers are reaching the range of 'ears'.

George Baird

Emeritus Professor of Building Science at Victoria University of Wellington

3mo

Well said - heard your discussion on The Panel and couldn’t agree more - just find it hard to believe the lessons haven’t sunk in yet.

Masi Shiran

Academic Staff Member @ Open Polytechnic of New Zealand | PhD student at Te Herenga Waka, Victoria University of Wellington | NZIA, PHINZ, NZGBC

3mo

Thanks for sharing Andrew :)

Matthew Cutler-Welsh

Podcast host. Engineer. Business Development Manger. Inspiring people to make a better place to live.

3mo

Good points well made Andrew E.. https://www.rnz.co.nz/national/programmes/thepanel/audio/2018956118/the-panel-with-leonie-freeman-and-chris-wikaira-part-1 Big sliding doors, don't make good windows. It's harder to ventilate in a safe and secure manner, sliding doors often let in too much heat from the sun. And your feet just don't really appreciate the view!

Jon Mitchell

Sustainability and Resilience

3mo

Don't want to say "Told you so!", but we did.

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