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By Joanna Jackson – 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.
By Nigel Isaacs – 1 June 2014, Build 142, Feature article
New Zealanders are a resourceful lot, always exploring new and better ways of doing things. We look back in time at two distinctly Kiwi twists on ways of building.
By Dr Manfred Plagmann – 1 August 2016, Build 155
Some roof designs, such as skillion roofs, must include ventilation to manage roof moisture. Recent BRANZ research provides advice on the best place for effective vent openings in low wind zones.
By Dr Manfred Plagmann, Vicki White – 1 April 2017, Build 159, Feature article
A companion study to the latest BRANZ House Condition Survey showed surprisingly high humidity levels in our bathrooms — even when not being used — coupled with unacceptably low temperatures.
By Stephen McNeil – 1 August 2018, Build 167
In the last Build, we looked at airtightness, how to measure it and the positives and negatives of being leaky or airtight. Now we consider how controlled infiltration makes ventilation design easier and the resulting savings.
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 Dr Manfred Plagmann – 1 February 2016, Build 152, Feature article
Just what do Kiwis do to keep their homes free from stuffy air? BRANZ is using science to find the answers and aid in the design of better ventilation systems.
By Stephan Rupp, Dr Manfred Plagmann, Cara Askew – 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.
By Greg Overton – 1 October 2020, Build 180, Feature article
Recent BRANZ research into the airtightness of apartment buildings has prompted a shift in thinking around airtightness and ventilation. BRANZ now recommends that residential buildings are mechanically ventilated and are built to an airtightness target.
1 October 2005, Build 90
For most skillion roofs the amount of air movement in the roof cavity, although limited, is sufficient to remove small amounts of vapour. The trick is to keep those amounts of water vapour small.
