期刊
BUILDING AND ENVIRONMENT
卷 45, 期 5, 页码 1153-1160出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.buildenv.2009.10.022
关键词
Rendering; Mould growth; Temperature; Moisture; ETICS; Facade
资金
- Swedish research council FORMAS
Many facades made with thin rendering on thermal insulation have problems with biological growth. In this study, surface temperature and surface relative humidity were monitored over a 20-month period on test house facades with different constructions (thermal inertia), surface colour and compass directions. This data were used to test three theoretical indices of biological growth with the aim of indicating the potential of mould growth on different types of rendered facades. The results show that thin renderings on thermal insulation have significantly higher surface humidities compared to facade constructions with higher thermal inertia, and therefore have a higher potential for mould growth. The colour is the most important factor for the surface humidity levels on south-facing facades (in the northern hemisphere) as darker surfaces absorb more solar radiation and therefore have a higher average temperature. On a north-facing facade the heat storage capability of the facade and its effect on the surface temperature is most important. (C) 2009 Elsevier Ltd. All rights reserved
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