Common Types of Household Mold

Aspergillus

• Found in household dust as well as compost piles, aspergillus often grows in warm, extremely damp conditions.
  
  

Penicillium

• Penicillium can grow in duct insulation and carpets, in addition to wallpaper and rotting fabrics in water-damaged homes.
  
  

Cladosporium

• Found both as an indoor and outdoor species, cladosporium thrives on moist, porous areas, including wood and fabrics, and most often enters the home through open entryways as well as the HVAC system.
  
  

Alternaria

• Indoors, alternaria most often grows in damp places such as showers, windows and carpets--anyplace where moisture accumulates with regularity.
  
  

Stachybotrys

• A slimy, black mold, stachybotrys can produce toxins and thrives in areas with excessive dampness often caused by continuously running water, such as a slow leak in the wall or condensation in the air conditioning system.