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Compliance for H1 5th edition design

By Bruce Sedcole 1 August 2022, Build 191

The BRANZ helpline has received many calls asking how to approach designing new houses that are compliant with the higher thermal requirements of New Zealand Building Code clause H1 Energy efficiency 5th edition. The first step is to look further than just the schedule method.

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Rule of thumb 1: Increase insulation

By Greg Burn 1 June 2022, Build 190

BRANZ modelling identified six areas for designers to focus on to reduce the carbon footprint of a new build. In the first of this series, we look at the practical considerations for designers using rule of thumb 1 Increase construction R-values.

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Building Code changes 2021

By David Hindley 1 February 2022, Build 188

MBIE recently released energy efficiency changes to the Building Code to help make new homes and buildings warmer, drier and healthier. These include increased minimum insulation requirements for roofs, windows and floors.

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Airtightness and ventilation

By Stephen McNeil 1 August 2021, Build 185, Feature article

As we push for higher performance from our houses, expectations for airtightness and ventilation are changing rapidly. Some changes will be needed in design to improve airtightness, and mechanical ventilation is likely to soon be the norm.

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School indoor moisture

By Stephan Rupp, Cara Askew 1 February 2017, Build 158, Feature article

BRANZ has been measuring moisture levels in a school’s classrooms. This information is providing a sound basis for understanding the indoor climate and designing moisture-safe long-span roofs in schools.

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