Do Not Attempt DIY Removal of Toxic Mold
Many mold species produce toxic spores that become airborne when disturbed. Without proper containment, protective equipment, and HEPA filtration, you risk spreading contamination and exposing yourself to dangerous mycotoxins.
Professional remediation is required for any mold growth larger than 10 square feet.
Common Household Mold Species
Learn to identify different mold types, understand their toxicity levels, and know when to call professionals.
Black Mold (Stachybotrys Chartarum)
The most dangerous household mold producing mycotoxins that cause severe health issues.
Appearance:
Slimy, dark texture with a musty odor
Common Locations:
- •Water-damaged walls
- •Behind drywall
- •Under sinks
- •Flooded basements
- •Around leaky pipes
Health Effects:
- •Chronic coughing
- •Respiratory infections
- •Severe headaches
- •Fatigue
- •Neurological issues
- •Immune suppression
Aspergillus
Over 180 species, some producing aflatoxins. Common in AC systems and damp areas.
Appearance:
Powdery or fluffy texture, varies by species
Common Locations:
- •HVAC systems
- •Air conditioning ducts
- •Dust
- •Drywall
- •Carpets
- •Mattresses
Health Effects:
- •Allergic reactions
- •Asthma attacks
- •Lung infections
- •Respiratory illness
- •Aspergillosis
Cladosporium
One of the most common indoor molds. Grows in both warm and cold conditions.
Appearance:
Dark green to black spots, suede-like texture
Common Locations:
- •Carpets
- •Fabrics
- •Wood surfaces
- •Window sills
- •HVAC systems
- •Painted surfaces
Health Effects:
- •Hay fever symptoms
- •Asthma
- •Skin rashes
- •Eye irritation
- •Sinus infections
Penicillium
Spreads quickly and easily becomes airborne. Common after water damage.
Appearance:
Blue or green fuzzy texture with musty smell
Common Locations:
- •Water-damaged materials
- •Wallpaper
- •Carpets
- •Insulation
- •Mattresses
- •Furniture
Health Effects:
- •Allergies
- •Asthma
- •Pulmonary inflammation
- •Sinus infections
Alternaria
Common allergen causing asthma-like symptoms. Grows in damp spaces.
Appearance:
Velvety texture with dark hairs
Common Locations:
- •Showers
- •Bathtubs
- •Sinks
- •Windows
- •Water leaks
- •Damaged areas
Health Effects:
- •Asthma symptoms
- •Allergic reactions
- •Upper respiratory infections
- •Hay fever
Aureobasidium
Often found behind wallpaper and on painted surfaces. Can cause infections.
Appearance:
Starts pink/brown, turns dark brown/black with age
Common Locations:
- •Wallpaper
- •Painted walls
- •Wooden surfaces
- •Caulking
- •Window frames
Health Effects:
- •Skin infections
- •Eye infections
- •Nail infections
- •Allergies
Chaetomium
Similar to black mold, grows after water damage. Produces strong musty odor.
Appearance:
Cotton-like texture, changes from white to dark with age
Common Locations:
- •Water-damaged drywall
- •Baseboards
- •Roof damage areas
- •Chronic leaks
Health Effects:
- •Skin infections
- •Allergies
- •Breathing difficulties
- •Auto-immune issues
Fusarium
Grows in water-damaged areas and cool temperatures. Can spread person-to-person.
Appearance:
Pink, white, or red with woolly texture
Common Locations:
- •Carpets
- •Wallpaper
- •Water-damaged areas
- •Humidifiers
- •AC drip pans
Health Effects:
- •Allergies
- •Respiratory infections
- •Bone infections
- •Brain abscesses (severe)
Trichoderma
Destroys building materials like drywall and wood. Common after flooding.
Appearance:
White with green spore clusters, woolly texture
Common Locations:
- •Wet carpets
- •Wallpaper
- •AC filters
- •Drywall
- •Wood
Health Effects:
- •Liver problems
- •Pulmonary infections
- •Allergic reactions
White Mold
Often mistaken for efflorescence. Multiple species can appear white.
Appearance:
Powdery or fluffy white coating
Common Locations:
- •Wood
- •Plants
- •Fabrics
- •Damp basements
- •Crawl spaces
Health Effects:
- •Allergies
- •Respiratory issues
- •Headaches
- •Dizziness
When to Call Professional Mold Removal
Mold growth larger than 10 square feet
Black mold or toxic mold species
Mold in HVAC systems or ducts
Mold after flooding or water damage
Family members experiencing health symptoms
Mold behind walls or hidden areas
Strong musty odors throughout home
Recurring mold after DIY attempts
