The Types of Black Mold

Black mold can be dangerous to human health, and it is important that steps are taken to rid your home or other structure from mold in order to avoid black mold exposure and related black mold symptoms  and black mold health effects.  Black mold is not a particular species of mold. Nearly all molds is actually black, and most people call all mold ‘black mold’.  Black mold and other indoor molds have been grouped into three classes of mold, based on the associated health risk that each class poses.  These classes are very much like the risk groups that are assigned to microorganisms that are handled by researchers within a laboratory environment.  Hiring a professional mold company is the quickest, easiest, and most reliable way to get rid of black mold.

Types of Black Mold by Hazard Class

The hazard classes for different types of black mold include:

Black mold hazard class A.  Black mold hazard class A includes fungi or metabolic products that come from fungi that pose a high health hazard to human health.  These types of fungi or metabolites should never be present in an occupied home, building or other dwelling.  Immediate attention and black mold treatment options should be employed if these types of fungi are present.

Black mold hazard class B.  Black mold hazard class B includes fungi that may cause an allergic reaction in inhabitants of a home or other dwelling if the mold is allowed to remain in place for an extended period of time.

Black mold hazard class C.  Black mold hazard class C includes fungi that have not been shown to be hazardous to human health.  Nonetheless, growth of this type of black mold and fungi inside can lead to damage to the home that necessitates repair work being done if allowed to grow and thrive.

types of mold

Types of Black Molds in Households

Most black mold that finds its way into the home does so when the humidity within the home is kept too high, the home has experienced flooding, or there is some type of plumbing or roofing repair that the home is in need of that has allowed black mold growth to take hold. To cut the risk of black mold exposure if you are experiencing a growth of black mold or if you live in the top ten worst states for mold, it is a good idea to realize where mold might be hiding within your home. The following is a list of black molds by type and particular spot within the home where the mold is most likely to grow and reproduce:

Types of Black Mold in the Kitchen and Bathroom

  • Aspergillus fumigatus (hazard class A)
  • Chaetomium globosum (hazard class C)
  • Cladosporium cladosporioides (hazard class B)
  • Cladosporium sphaerospermum (hazard class C)
  • Ulocladium botrytis (hazard class C)

Types of Black Mold on Wallpaper
  • Chaetomium spp., particularly Chaetomium globosum
  • Cladosporium sphaerospermum
  • Doratomyces spp (not classified)
  • Fusarium spp (hazard class A)
  • Scopulariopsis spp (hazard class B)
  • Stachybotrys chartarum (hazard class A)
  • Trichoderma spp (hazard class B)

The Types of Black Mold

Types of Black Mold on Carpet and Mattresses
  • Penicillium aurantiogriseum (hazard class B)
  • Aspergillus repens (not classified)
  • Aspergillus versicolor (hazard class A)
  • Aureobasidium pullulans (hazard class B)
  • Chaetomium spp., in particular Chaetomium globosum
  • Penicillium spp., particularly Penicillium chrysogenum (hazard class B)
  • Scopulariopsis spp.
  • Wallemia sebi (hazard class C)
Types of Black Mold on Window Frames
  • Aureobasidium pullulans
  • Cladosporium sphaerospermum
  • Ulocladium spp.
Types of Black Mold in Basements
  • Aspergillus fumigatus
  • Aspergillus versicolor
  • Fusarium spp.

A professional company that is trained to eradicate black mold from your home can be called in to completely get rid of black mold.  Once your home is free from mold, be sure to practice black mold prevention to keep mold from cropping back up.

6 thoughts on “The Types of Black Mold

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