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 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 Dr Manfred Plagmann – 1 December 2016, Build 157, Feature article
BRANZ physicists have developed a useful calculation for designers to work out the minimum number and area of vents required in roof spaces.
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.
By Trevor Pringle – 1 April 2015, Build 147, Feature article
Older houses often don’t perform as well as new ones. Fortunately, there are plenty of ways to upgrade performance as well as modernise for form and function.
By Sunil Bura, Mike Duke, Tim Anderson and Mark Lay – 1 April 2008, Build 105
A new solar collector system, being developed at the University of Waikato, integrates neatly into standard roofing iron and can generate both electricity and heat.