A strong indicator of water damage, commonly found on drywall and cellulose-rich materials.
Chaetomium colonies start white and cotton-like, then mature to olive-gray or brown. They produce a distinctive musty odor that is often the first sign of its presence. Under a microscope, its fruiting bodies (perithecia) are flask-shaped with characteristic hair-like appendages.
Chaetomium is strongly associated with water-damaged buildings. It thrives on wet drywall, wallpaper, cardboard, paper, and other cellulose-containing materials. It is commonly found in areas that have experienced chronic water intrusion such as leaky roofs, basements, and around plumbing failures.
Chaetomium can cause allergic reactions and respiratory symptoms. Some species produce mycotoxins including chaetoglobosins and sterigmatocystin, which are potentially carcinogenic. Immunocompromised individuals face a higher risk of systemic infections. Its presence in a building should always be taken seriously.
Chaetomium is one of the most reliable indicators of chronic water damage. Its presence almost always points to a history of significant or prolonged water exposure. Finding Chaetomium typically means the affected building materials need to be removed and replaced, as surface cleaning is not sufficient.
If you suspect mold growth in your home or business, contact us for a professional assessment.
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