Search results for 'roofs'

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BRANZ weathertightness poster

1 October 2003, Build 78

In the August/September 2002 edition of Build you would have received the BRANZ weathertightness poster. This column takes a detail from the poster and provides a ‘good practice’ solution to it.

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Passive roof ventilation

By Stephan Rupp 1 February 2016, Build 152, Feature article

Twenty years ago, roofs didn’t need to be specifically ventilated. Today, things are different. That’s because 21st century homes are more airtight, and if they aren’t aired, condensation may form.

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School indoor moisture

By Stephan Rupp, Cara Askew 1 February 2017, Build 158, Feature article

BRANZ has been measuring moisture levels in a school’s classrooms. This information is providing a sound basis for understanding the indoor climate and designing moisture-safe long-span roofs in schools.

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Adding eaves

By Trevor Pringle 1 August 2012, Build 131

A common feature of many leaky buildings is that they were constructed without eaves, usually with walls terminating with a parapet. Changing this design detail can greatly enhance a building’s weathertightness.

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Repairing flood damage to houses

By Des Molloy 1 December 2004, Build 85

New Zealand has a highly variable, and volatile, climate. Early this year, the lower half of the North Island experienced unseasonal heavy rainfall, causing widespread floods. Des Molloy checked out the repairs on some affected homes.

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Flashings keep water out

By David Bullock 1 February 2009, Build 110, Feature article

A flashing is a folded length of metal that provides a weathertight cover at junctions in and between walls and roofs. Getting them right is a good start towards constructing a weathertight building.

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Aggravated thermal bridging

By Malcolm Cunningham 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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