By John O’Donnell
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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.
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By Stephen McNeil
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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.
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By Trevor Pringle
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1 April 2013, Build 135, Feature article
Many homes with suspended timber floors suffer from damp. Once the cause has been identified, there are ways to fix the problem.
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By Trevor Pringle
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1 October 2016, Build 156, Feature article
Perversely, the draught-free, airtight homes of today might be harbouring plenty of internal moisture. Well designed ventilation is needed to manage this moisture and avoid the perils of mould and health issues.
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By Stephan Rupp, Dr Manfred Plagmann
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1 June 2018, Build 166
A recently renovated home had a problem with mould in the roof cavity. BRANZ found moisture from a poorly ventilated bathroom was passing through downlights into an airtight roof space. It’s a lesson for others.
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By Stephan Rupp, Dr Manfred Plagmann
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1 June 2020, Build 178
BRANZ went into the field to solve the problem of a failed roof cavity in a new build in Tauranga. Because of the parapet design, a novel approach was taken that used a solar fan to ventilate the cavity.
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By Joanna Jackson
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1 December 2006, Build 97
The recent cold and wet winter has left many homeowners wondering if they should install a ventilation system to help reduce condensation and dampness in their homes. As always, it’s a matter of choosing the right system – one that is effective and efficient for your situation.
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By Stephan Rupp, Dr Manfred Plagmann, Cara Askew
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1 February 2017, Build 158
How airtight is a ceiling? Does it need to be airtight? What if it isn’t? BRANZ has answers after testing the air permeability of different ceiling types.
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By Stephan Rupp
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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.
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By Alide Elkink
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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.
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