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A bio-hygrothermal mould growth analysis of typical Australian residential wall systems


Nath, S and Dewsbury, M and Watson, P and Lovell, H and Kunzel, H, A bio-hygrothermal mould growth analysis of typical Australian residential wall systems, Proceedings of the 54th International Conference of the Architectural Science Association (ANZAScA), 26-27 November 2020, Auckland, New Zealand, pp. 1-11. ISBN 9780992383572 (2020) [Refereed Conference Paper]

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Since 2014, Australian scholars and design and construction professionals have raised concerns about the increased presence of mould and condensation within new stand-alone and multi-residential buildings. Several studies have identified significant material decay and mould growth within external wall systems due to long-term moisture accumulation. This paper focusses on moisture and mould growth in buildings by providing an in-depth analysis of the most common external wall system for Australian residential buildings (cavity brick veneer). This wall's moisture accumulation over a ten-year period was simulated using multi-year transient hygrothermal software. Transient hygrothermal simulation is novel within the Australian research and regulatory context. Mould growth was simulated and analysed using a post-processing mould growth software. To assist in informing regulatory development, simulations were completed for three temperate Australian climate zones. The modelled wall system applied typical and regulation-compliant building material configurations for pre-2003, 2004, 2007 and 2010. The results of the modelled wall system will be used to inform national building regulations in Australia. A key component of this paper includes the evaluation of internationally accepted methods for mould growth simulation.

Item Details

Item Type:Refereed Conference Paper
Keywords:hygrothermal analysis, mould growth model, mould, condensation, health
Research Division:Built Environment and Design
Research Group:Architecture
Research Field:Architectural science and technology
Objective Division:Energy
Objective Group:Energy efficiency
Objective Field:Residential energy efficiency
UTAS Author:Nath, S (Mrs Shruti Nath)
UTAS Author:Dewsbury, M (Dr Mark Dewsbury)
UTAS Author:Watson, P (Dr Phillipa Watson)
UTAS Author:Lovell, H (Professor Heather Lovell)
ID Code:142199
Year Published:2020
Deposited By:Architecture and Design
Deposited On:2020-12-22
Last Modified:2021-04-29

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