Same Day Service!


5 Types of Mold Commonly Found in Homes in Maryland

Posted in Blog | Mold Inspection on September 15th, 2018 by Ian Stevens

It might sound scary, but most homes do contain mold. And while some mold can be toxic and can lead to very dangerous health symptoms, toxic mold in homes is rare.

However, allergenic molds are quite common. These types of mold can lead to less serious symptoms, but still symptoms nonetheless. These could include sneezing, watery eyes, coughing, wheezing, and more.

Let’s go over the 5 of the most common types of mold you could find in your Maryland home. The good news is that there are ways to rid your house of mold no matter what type you might have in your house.


Alternaria is the most common type of allergenic mold you find inside homes. It has a velvety, hair-like appearance and is usually dark green or brown. It’s mostly found in areas that are consistently wet like in showers, sinks, bathtubs, or areas with water damage.

While it isn’t a toxic mold, it is associated with asthma-like symptoms like coughing and wheezing.


Mold usually prefers warm and wet conditions, but Cladosporium mold is able to thrive in both warm and cold conditions, meaning you aren’t safe even in the Maryland winter.

It’s an allergenic mold that’s most often found in carpets, upholstery, cupboards, and floorboards. It can cause a number of symptoms including skin rash, lung infections, respiratory issues, and allergic reactions.


Unlike the other two molds we’ve discussed so far, Acremonium is a type of toxic mold. This mold starts off looking wet but evolves to turn into a powdery substance.

You usually find this mold in air conditioners, humidifiers, drainage pipes, and other areas that are consistently wet. This is a very dangerous mold that can lead to immune issues, brain disorders, and even cancer.

Stachybotrys Chartarum

Stachybotrys Chartarum, known colloquially as black mold, is another type of toxic mold. This one is unique in that it’s both toxigenic and allergenic.

As a toxic mold, this mold will produce mycotoxins, which can lead to severe health issues for those exposed. These include:

  • Breathing problems
  • Aches
  • Pain
  • Inflammation
  • Headaches
  • Neurological problems
  • Cardiovascular problems in children

Black mold thrives in areas that are damp, moist, and humid. It has a slimy black appearance. It often grows on wood, wicker, cardboard, hay, and other natural materials.


Ulocladium is another unique, but common, mold on this list because it grows both inside and outside your home. It’s usually black and is found in very wet areas like the shower, bathtub, sinks, basements, kitchens, etc. It also grows in areas with water damage like walls and floors.

It’s easy to misidentify Ulocladium as another mold type, so be sure to get it looked at by a professional.

Common Types of Mold

These five types of mold are a small subset of the hundreds of mold species out there. If you’re unsure of what mold type you’ve found in your home, it’s always best to consult a professional and have it removed as soon as possible to avoid severe health consequences.

If you need mold services, don’t hesitate to contact us at MD Mold Testing. for reliable mold, asbestos, and air quality testing in Maryland!