Assessment of exposure risk from hidden fungal growth by measurements of air change rates in construction cavities and living areas

Sofie M Knudsen, Eva B. Møller, Lars Bo Gunnarsen

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

The transfer of particulate and gaseous pollution from hidden fungi growing on non-visible surfaces within the building envelope to occupied rooms is limited by the separating structure. Yet, growth, even in sealed construction cavities, is known to cause annoying smells and other more adverse health symptoms among the building occupants. This study analyses limitations of air change rate measurements in inaccessible construction cavities as well as analyses of the air exchange between living areas and accessible cavities such as crawl spaces and attics. It was necessary to invent a field study technique to use the tracer gas decay method in small and inaccessible cavities. This technique allowed further investigation on the exposure risk from hidden fungal growth. Assessment of the air transfer between crawl spaces and living areas indicate that the tightness of separating structure has an influence on the exposure risk.
Original languageEnglish
JournalJournal of Building Physics
Volume41
Issue number3
Pages (from-to)209-224
ISSN1744-2591
DOIs
Publication statusPublished - 28 Apr 2017

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