This website is best viewed on a newer browser than the one you are using. Learn about upgrading your browser (opens in a new window/tab)
Welcome to BRANZ Build. Skip to main content.
Showing results 1-10 of 41
Order by:
By John O’Donnell – 1 August 2007, Build 101, Feature article
There has been a big growth recently in the installation of mechanical home ventilation supply systems. We are told they can solve many of our indoor environmental problems, but sometimes basic issues need tackling first.
By Stephen McNeil – 1 December 2015, Build 151, Feature article
Newer homes may be less draughty but concern is growing that they are accumulating too much internal moisture. Ventilation is key, and BRANZ is researching how to keep homes aired, warm and healthy.
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.
By Dr Manfred Plagmann – 1 February 2016, Build 152, Feature article
Ventilation systems in New Zealand homes rarely have their airflows measured and adjusted during installation, resulting in poorly ventilated rooms. Using active flow hoods during commissioning could change this.
By Roland Alderton, Mike Way – 1 October 2020, Build 180, Feature article
Ventilation of cold roof designs in New Zealand doesn’t always go smoothly. Here, BRANZ physicists hand over to a couple of professional builders who have long been at the coalface dealing with roof moisture issues on their projects.
By Stephen McNeil – 1 February 2016, Build 152, Feature article
Sufficient ventilation is crucial as our homes become more airtight. A mix of passive and mechanical options can work well, but all designs should start by getting the source extraction measures right.
By Stephan Rupp, Dr Manfred Plagmann – 1 October 2020, Build 180, Feature article
BRANZ was called into a Dunedin school where too much ventilation caused excessive condensation in a large roof space. Understanding why this happened points to warm roofs being better in some locations.
By Stephen McNeil – 1 August 2015, Build 149
Subfloor performance plays a big part in the comfort and health of our homes. BRANZ is modelling appropriate levels of subfloor ventilation to understand what makes a healthy building.
By Stephan Rupp – 1 December 2021, Build 187
BRANZ research has provided reassuring results for those wanting to add passive ventilation in roof cavities to counter condensation. Corrosion of metal fixings inside the roof space remains low, even in extreme marine environments.
By Alide Elkink – 1 December 2022, Build 193
Reducing the high levels of indoor moisture found in many New Zealand homes is a great start to creating a healthy home. In this overview, we look at some of the ways to do this.
