By Greg Overton
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1 December 2009, Build 115
The many examples of rotting parapets have raised concerns about the details used. A 2-year BRANZ project assessing the performance of parapet walls provides confidence that parapets can manage water when E2/AS1 details are used.
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By Mark Bassett
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1 December 2008, Build 109, Feature article
A detailed study of water leakage through 14 walls clad with weatherboards sheds some light on the origin of leaks.
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By Greg Overton
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1 February 2009, Build 110, Feature article
Weathertightness research and issues in New Zealand and overseas were discussed recently at a meeting in Auckland.
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By Greg Overton
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1 December 2007, Build 103, Feature article
Building on the success of previous weathertightness research at BRANZ, two new projects have now started – one looking at parapet wall systems and the other at imported drainage mats performance under New Zealand conditions.
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By Mark Bassett
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1 October 2013, Build 138, Feature article
A BRANZ program has the answers for those keen to understand how vents in cavity walls help keep walls dry. By using this knowledge, keeping it simple and following the 4Ds – drying, deflection, drainage and durability – walls will be weathertight.
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By Stephen McNeil
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1 October 2014, Build 144
The Fraunhöfer Institute for Building Physics is a German equivalent to BRANZ. An ongoing relationship between the two organisations continues to enhance understanding of local weathertightness issues.
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By Malcolm Cunningham
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1 December 2011, Build 127, Feature article
Recently, several cases of an insidious new form of thermal bridging have been seen. Aggravating factors have been identified that contributed to the problem, so there are now lessons to be learnt to avoid this on other buildings.
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By Mark Bassett
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1 December 2007, Build 103, Feature article
BRANZ recently completed research to understand the movement of air and water in the cavities around windows. This has provided new insight into alternative ways of managing water at the difficult junction between walls and windows.
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By Mark Bassett
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1 October 2014, Build 144, Feature article
BRANZ is studying the properties of junctions to understand how they perform in wet conditions. The aim is to see if a performance basis for junction design is possible.
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By Greg Overton
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1 June 2016, Build 154, Feature article
Going higher may help to provide much-needed housing, but there are concerns about how to demonstrate compliance when the guidance is often limited to buildings up to 3 storeys.
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