microbial sampling in building surveys what and why
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Microbial sampling in building surveys
what and why are we sampling?
Maria Nunez, Johan MattssonMycoteam as, Norway
201.05.2023
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What shows up in buildings? What grows in buildings?
SINK SOURCE
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WATER
Where is the enemy hiding?
Extensive mould growth
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Only spores, no activity
Clean and disinfect the surface, and you will get the same dust next time the fungus produce spores
Use basic biology (species natural history or trades) in order to find the active fungus!
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Here it is! Hidden in building structures
Visual surveys
Sampling
Technical surveys Moisture measurements
… always looking for the source
THE EXPERIENCED MOULD INSPECTOR
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Technical surveys: go beyond surfaces
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… and you will find the real building problem!
High RH, cold
Condensation
Leak, cold
Condensation
High RH, warm
Leak, surface water
Condensation
High RH, fruit jam
Leak/Condens., warm
Penicillium Ulocladium Acremonium
WallemiaAspergillusCladosporium
Verticillium Trichoderma Stachybotrys)
Biologists can «read» mould damage
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Building physicsBuilding biology
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Be open for surprises!We are dealing with living and active
organisms! – or at least we should…