Cold roofs? Warm roofs?
What’s the main difference between roof construction options? BRANZ explains the science to help you design better roofs.
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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 Zhi Jian (David) Wong, Hugh Byrd – 1 October 2011, Build 126
An energy audit at Remuera Intermediate School also investigated the potential of photovoltaics to give the school an independent energy supply and income from feeding surplus electricity into the grid.
By Asif Iqbal – 1 June 2015, Build 148, Feature article
BRANZ was on the ground in Northland last year, examining the effects of a storm on buildings. Roofs bore the brunt of the weather, with structures on exposed terrain the most vulnerable.
By Graeme Beattie – 1 August 2008, Build 107
Strong wind causes damage to houses, particularly their roofs. A recent BRANZ study started by defining ‘extreme winds’ before developing retrofit solutions to ensure roofs on older houses are adequately secured.
1 April 2013, Build 135
New research suggests installing photovoltaics on roofs and driving electric cars could transform low-density suburbia from a high-energy consumer to an energy provider for the city.
By Malcolm Cunningham, Luca Quaglia – 1 October 2010, Build 120
A recently completed major BRANZ research project has improved understanding of how roofing underlays handle moisture in roofs and led to the development of a new test suitable for a wider range of roofing underlays.
By Lois Easton – 1 April 2008, Build 105, Feature article
Nine homes in a Porirua suburb were recently renovated to achieve greater sustainability. Monitoring continues this year to measure the results but some useful tips have already come from the project.
By Dr Colleen Wade – 1 February 2014, Build 140
A new BRANZ research project is looking to improve the methods of determining the level of fire resistance necessary in parts of buildings to limit fire spread.
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 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.