Mold Education

Servicing Philadelphia, Chester County,
Montgomery PA, and Lancaster County

Looking for a professional mold inspection for your business or home with fast accurate results?

What kind of mold is dangerous?

Toxigenic molds –  Some toxigenic molds may create the chemical metabolic byproducts called mycotoxins, which can cause a toxic response in humans and animals


Can mold grow in your lungs?

  • The mold spores can colonize (grow) inside lung cavities that developed as a result of chronic diseases, such tuberculosis, emphysema, or advanced sarcoidosis.
  • The fibers of fungus might form a lump by combining with white blood cells and blood clots. This lump or ball of fungus is called an aspergilloma or mycetoma.

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Types of Mold

Mold comes in a variety of colors, the most common white, grey, or black. Common types we test for (not inclusive) are listed below:


  • This is an allergenic mold, which means you can tell it’s there if you have allergic reactions like coughing, watery eyes, etc.
  • It’s the most common form of mold found in showers or bathtubs (could mean water damage) and is recognized by its velvety texture with dark green or brown hairs
  • It spreads incredibly quickly and can lead to asthma symptoms, so it’s important to act fast. Chronic cases may develop pulmonary emphysema


  • Spores of this type are reported to be allergenic
  • This mold can grow relatively well in damp, enclosed, wet or air sealed surfaces or materials
  • It can be found on Windows, Upholstered furniture, Rugs and mattresses, Walls and cabinets and Airtight closets
  • Staying in a place with this type of mold over a prolonged period can result in severe allergies
  • Some of the major allergy symptoms developed by this mold: Headache, respiratory difficulties, nausea, fatigue and dizziness, asthma, ringworm, athletes foot, and more


  • A mold that has toxic capabilities, Aspergillus is a common mold found in American homes
  • It can form thick layers on the walls with its long flask-shaped spores
  • With over 185 species and various colors, it could lead to specific allergic reactions or respiratory infections


  • A fungus with large spores that could be expected to be deposited in the upper respiratory tract
  • This fungus can produce the mycotoxin – sterigmatocystin, which has been shown to produce liver and kidney damage when ingested by laboratory animals
  • Found in soil and on house plants and vegetables, it is also known as “gray mold”. It causes leaf rot on grapes, strawberries, lettuce, etc.
  • It is a well-known allergen, producing asthma type symptoms in greenhouse workers and “wine grower’s lung”


  • Typically seen where there is severe water damage, Chaetomium has a texture similar to cotton
  • While the color starts as a white or grey, it turns to black over time and generally has a musty odor
  • Make sure not to touch as this could also lead to skin and nail infections


  • Another allergenic mold, this type of mold almost looks like suede and is generally an olive green or brown color
  • Typically causing allergic reactions, including respiratory issues, it is commonly found in fabrics in the property like carpet


  • This allergenic and toxic mold is pink, white, or red in appearance and spreads quickly as it grows on food
  • Just make sure you check your food because this could lead to allergic reactions like a sore throat or nervous system damage from the toxins


  • Blue-green in appearance and velvety texture identify this allergenic mold
  • The mold spores can move through the home through the air leading to respiratory issues or symptoms of asthma
  • You’ll generally find this where there is water damage, notably in mattresses or wallpaper
  • Commonly found in soil, food, cellulose and grains. It is also found in paint and compost piles
  • It may cause hypersensitivity pneumonitis, allergic alveolitis in susceptible individuals. It is reported to be allergenic (skin). It is commonly found in carpet, wallpaper, and in interior fiberglass duct insulation
  • Some species can produce mycotoxins. Common cause of extrinsic asthma (immediate-type hypersensitivity: type I)
  • Acute symptoms include edema and bronchospasms; chronic cases may develop pulmonary emphysema
  • It may also cause headaches, vomiting, and diarrhea

Stachybotrys (Black Mold)

  • This toxic mold is slimy in texture and a dark green or black color
  • Found in damp areas that have been humid for weeks at a time, it could lead to severe health issues
  • Individuals with chronic exposure to the toxin produced by this fungus reported cold and flu symptoms, sore throats, diarrhea, headaches, fatigue, dermatitis, intermittent local hair loss and generalized malaise
  • Other symptoms include coughs, rhinitis, nosebleed, a burning sensation in the nasal passages, throat, and lungs, and fever
  • The toxins produced by this fungus will suppress the immune system affecting the lymphoid tissue and the bone marrow
  • Animals injected with the toxin from this fungus exhibited the following symptoms: necrosis and hemorrhage within the brain, thymus, spleen, intestine, lung, heart, lymph node, liver, and kidney


  • Black in appearance, this is generally found in rooms in the property with the highest moisture following bad water damage or condensation
  • Bathroom/basement etc. This mold is easily confused with other types, so always call a professional because it could lead to health issues like hay fever

More Reasons to Test for Mold

Plumbing Problems

  • Clothes washer leakage
  • Dishwasher leakage
  • Ice-maker supply line leakage
  • Sink drain leaks
  • Shower stall leakage
  • Large stains under vinyl flooring

Roof Leak Indicators

  • Ceiling stains
  • Upper wall stains
  • Skylight stains
  • Peeling, blistered or discolored wallpaper

Yard Grading defects

  • Baseboard stains
  • Wet flooring or damp carpet
  • Swelling and/or lifting of wood flooring

Window Defects

  • Stains below windowsills
  • Water or stains on windowsills
  • Decayed wood window components

A/C Defects

  • Stains below attic air handlers
  • Dark residue on A/C ceiling diffusers
  • High humidity
  • Excessive condensation on windows

Contact Us


  • 610-960-5895

  • 1172 Skelp Level Rd, Downingtown, PA 19335


  • PA Certification #3589