Passive roof ventilation
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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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.
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.
By Malcolm Cunningham – 1 April 2005, Build 87
Although steel framing in domestic construction has only a small market share, there are signs it may be on the increase. Since steel is a good conductor, builders need to be aware of potential pitfalls, such as thermal bridges and condensation.
By Dr Manfred Plagmann, Stephan Rupp – 1 December 2015, Build 151, Feature article
Recent BRANZ research has confirmed how moisture gets into roof spaces and highlighted the critical role ventilation has in removing it.