5 Frequently Asked Questions About Black Mold

black mold

Though there are approximately 20,000 species of mold, only about five are commonly found inside structures. One of these species, Stachybotrys chartarum, is also known as “black mold.” It’s not the most common type encountered inside houses, but black mold has a reputation for triggering particularly problematic symptoms in certain people exposed to it. Here are five questions and answers about Stachybotrys chartarum to clear up some confusion surrounding it.

  • Is black mold always black?  No, it may also appear dark green or gray. Conversely, other types of more common mold that may appear black are not the Stachybotrys chartarum species.
  • Does black mold occur more frequently inside houses than other mold?  Actually, the reverse is probably true. Stachybotrys chartarum tends to require more moisture to proliferate than most other common mold types. Therefore, it is most likely to be found only in more chronically wet indoor settings.
  • Is there something about black mold that makes it especially toxic to humans?  For individuals with a sensitivity to mycotoxins contained in airborne mold spores, black mold is associated with a wider range of reported physical symptoms than other types of mold. However, the severity of reactions to black mold spores also depends upon the extent of contamination inside the home as well as the duration of exposure. Individuals who are not sensitive to mold mycotoxins may not experience symptoms from black mold exposure.
  • Is black mold contamination more difficult to remove than other types?  No, the same basic mold removal techniques are involved: First, eliminate the source of moisture that triggers active mold growth. Then, test to confirm the type of mold present on the premises. Locate all active mold growth and physically remove it. Disinfect surfaces where mold existed and remove any materials that are permanently contaminated. Follow up with later air sample testing to confirm decontamination.
  • Are physical symptoms caused by black mold permanent? For most people who experience a reaction to mold exposure of any type, including black mold, symptoms will gradually disappear when professional mold remediation techniques are utilized to remove contamination inside the house. 

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