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Speaking from experience

By Roland Alderton, Mike Way 1 October 2020, Build 180, Feature article

Ventilation of cold roof designs in New Zealand doesn’t always go smoothly. Here, BRANZ physicists hand over to a couple of professional builders who have long been at the coalface dealing with roof moisture issues on their projects.

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Airtightness of apartments

By Greg Overton 1 October 2020, Build 180, Feature article

Recent BRANZ research into the airtightness of apartment buildings has prompted a shift in thinking around airtightness and ventilation. BRANZ now recommends that residential buildings are mechanically ventilated and are built to an airtightness target.

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