By Nicole Allen
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1 August 2022, Build 191
A local volcanic eruption is a substantial risk to the Auckland region. Research into the impact of multiple volcanic hazards on the roofs of buildings showed that they generally deal well with volcanic ash and flying rocks landing on them.
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By Alide Elkink
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1 August 2022, Build 191
Roof construction R-values will increase to R6.6 when New Zealand Building Code Acceptable Solution H1/AS1 5th edition becomes mandatory on 1 May 2023 (6 months later than first announced). Have you thought about how you will deal with these changes in your designs?
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By Martin Connell
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1 August 2021, Build 185
Brick gable-ended roofs should be diagonally braced to prevent out-of-plane movement in an earthquake. It could make the difference between a home that remains liveable and one that does not.
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By Alide Elkink
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1 October 2018, Build 168
Considering wind uplift should be top of mind when replacing a heavy roof with a lighter one, NZS 3604:2011 Timber-framed buildings outlines the necessary top plate connections.
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By Stephan Rupp
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1 February 2018, Build 164
What’s the main difference between roof construction options? BRANZ explains the science to help you design better roofs.
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By Alide Elkink
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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.
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By Dr Manfred Plagmann
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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.
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By Roger Shelton
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1 August 2015, Build 149
Roof failures in high winds are unfortunately too common in timber-framed buildings, but get the connections right, and the roof should stay put.
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By Alide Elkink
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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.
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By Roger Shelton
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1 June 2014, Build 142
Verge overhangs are the areas of a timber-framed roof that are most vulnerable to wind damage, so it’s important to get them right.
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