Keeping skillion roofs dry
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.
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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.
By Malcolm Cunningham – 1 June 2003, Build 76
Only a very few types of roof require deliberate ventilation if all potential sources of moisture have been dealt with adequately. The BRANZ helpline still receives queries about whether to ventilate or not; so it’s time to have another look at this question.
By Alide Elkink – 1 June 2017, Build 160
They deliver substantial environmental gains, so while New Zealand is slow to jump on the green roof bandwagon, there’s reason to think this will change.
By Alide Elkink – 1 December 2014, Build 145
Judging by the number of calls to the BRANZ Helpline, there’s some confusion around bracing requirements for monopitch roofs. Here, we sort out the issue.
By Tony Conder – 1 December 2004, Build 85
Roof bracing is one element in a continuum that provides resistance to horizontal loads. It works with the wall and foundation bracing to supply a total bracing package for a building.
By Rachel Hargreaves – 1 October 2006, Build 96, Feature article
Green roofs are slowly breaking into the New Zealand market. Some of the issues and cost benefits are discussed here.
By Alide Elkink – 1 August 2017, Build 161
While they may be more expensive to install, the popularity of warm roofs is growing as they are more thermally efficient, resulting in lower energy costs.
By Stephan Rupp – 1 February 2018, Build 164
What’s the main difference between roof construction options? BRANZ explains the science to help you design better roofs.
By Greg Burn – 1 February 2024, Build 200
Following the H1 refresher on floors in the last issue of Build, here we take look at H1 requirements and roofs.
By Alide Elkink – 1 June 2007, Build 100
Underlay is an essential part of roofing installation, but there still appears to be some uncertainty about its use and installation.