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Towards a better understanding of wood decay

: Hofbauer, Wolfgang; Krueger, Nicole; Renzl, Anna; Mayer, Florian; Sedlbauer, Klaus; Breuer, Klaus

International Society of Indoor Air Quality and Climate -ISIAQ-, Ottawa:
13th International Conference on Indoor Air Quality and Climate 2014. Vol.3 : Proceedings of Indoor Air 2014, Hong Kong, 7-12 July 2014
Red Hook, NY: Curran, 2014
ISBN: 978-1-63439-731-5
International Conference on Indoor Air Quality and Climate <13, 2014, Hong Kong>
Conference Paper
Fraunhofer IBP ()

The German standard DIN 68800 defines that wood used in construction shall not be allowed to have a moisture content of more than 20% for a longer period of time in order to avoid damage by wood destroying fungi. In fact, the growth of wood destroying fungi depends on the conditions of moisture, temperature and type of wood, and may already be possible at the fixed 20% moisture level. In an interdisciplinary project the growth performance of wood destroying fungi under different substrate, temperature and moisture conditions is investigated employing the isopleth system approach. The so called "isoplethe - system" was originally used by mycologists to describe the specific reaction of growth and germination of different mould species to different combinations of temperature and relative humidity and water activity, respectively (e.g. Snow, 2001; Ayerst, 1969; Smith and Hill, 1982), Data of building relevant species have been collected and used to define a "lowest isopleth for mould" (LIM 0) (Sedlbauer (2001), which describes the border conditions for any mould growth at optimal media.