Suggested reading
Molds in indoor environment can be at the origin of many disorders. The main factor able to induce their development is water infiltration from leaks.
Molds are microscopic mushrooms (fungi), in particular Penicillium, Aspergillus and Cladosporium
Dampness odor and visible molds are a predicting factor of high mold concentration in the air (> 470 CFU m3) in more than 80% of cases
Reboux G, Bellanger AP, Roussel S, Grenouillet F, Millon L.
Moulds in dwellings: health risks and involved species
Rev Mal Respir. 2010 Feb;27(2):169-79.
Palot A, Charpin-Kadouch C, Dumon H, Charpin D.
Non allergic disorders associated with domestic moulds
Rev Mal Respir. 2010 Feb;27(2):180-7.

Blistered paint points to association with VOCs
Typical molds are not blistery
The black spots are typical molds
Tapani Tuomi,1* Kari Reijula,1 Tom Johnsson,1 Kaisa Hemminki,2 Eeva-Liisa Hintikka,1 Outi Lindroos,1 Seija Kalso,3 Pirkko Koukila-Kähkölä,4 Helena Mussalo-Rauhamaa,5 and Tari Haahtela5
Mycotoxins in Crude Building Materials from Water-Damaged Buildings
Appl Environ Microbiol. 2000 May; 66(5): 1899–1904.

Percentage of samples positive for the named mycotoxin
Adapted from Bloom E. et al, Molds and Mycotoxins in Indoor Environments. A Survey in water-damaged buildings. J. Occ. Envir. Hygiene, 2009,6;671
Trichodermol and Verrucarol are metabolites of Satratoxins
Roridin E
Ochratoxin A
Aflatoxin B2
Chaetoglobosin A
Roquefortine C
Aflatoxin B1




From water damage
Adapted from: Polizzi V. et al., J. Environ. Monitoring. 2009, 11:1849
Adapted from Tuomi T. et al., Mycotoxins in crude building materials from water-damaged buildings, Appl Envir Microbiol 2000, 66: 1899
Differences between the 3 above publications are due, amongst other factors, to the fact that it is hardly possible to search simultaneously for hundreds of mycotoxins, and that the priority choices of the authors were not quite the same

These molds, if not rapidly and adequately remediated, produce toxic mycotoxins, found in water        damaged buildings:
Water damage induces a group of mycotoxins which are different, frequency-wise, from those met with in food and feed. They are especially:
- Sterigmatocystin
- Satratoxins
- Trichodermol
- Verrucarol
- Diacetoxyscirpenol
- Citrinin
- Deoxynivalenol
- Roquefortine
- Aflatoxins