Advanced Mold Diagnostics, LLC is an environmental consulting company located in Broomall, Pennsylvania.

Mold, as unsavory as it is, is a substance that can be found in at least some quantities in most homes. But, mold is never just mold. There are 100,000 and counting different species of mold that occur naturally and many of these can also be found in your home. Some mold varieties are not very trying on our bodies, while others can cause very serious health issues. Here are just a few of the most common types of mold that might be found in your home after a mold inspection.

Penicillium: There are over three hundred different species of Penicillium that you might find in your home.  Most people have been exposed to at least one species of this mold in one way or another, as it is a major component of many common foods and medications. This mold is an allergenic mold, and despite its medical claims to fame, can cause many diseases in humans. This type of mold often grows on building materials when they get wet or the humidity is elevated as well as in soil or on food. It is sometimes found in dust too.


Cladosporium: This mold is one of the most common molds on the planet. This type of mold is a black or green powdery substance. It is often found on food, dead plants or things that are made out of dead organic materials, (like modern day houses), paint and in fiberglass air ducts. It can cause many issues in humans including skin rashes, pulmonary conditions, asthma, and even nail fungus.

Memnoniella: This is one of the most common types of mold found in homes seeing that it grows on materials that we all have and use in our daily lives. This type grows on cotton, paper, and wood products. It can also develop toxins that are unsafe for both humans and animals.

Stachybotrys: This is a much discussed and misunderstood mold type, which is more commonly known by the name of toxic black mold. This species is what is defined as an indicator species. Knowing that it requires very high water activity in order to grow suggests that there is flooding or a leak in the home that is sustaining it. As you might already know, it is slimy and blackish in color, and is often found within the structure of the home. It grows on walls and ceilings, most often behind them, so it goes unseen and it has been known to cause asthma, headaches, and in extreme cases, cancer.


Mucor: This mold type can be seen in homes and is most often found in animal waste as well as soil and common household dust. If you have a weak immune system, it is easy to develop a lung infection if you are exposed to this type of mold.

Alternaria: This type of mold is also an allergenic mold. It is usually found outside in soil and on plants. Inhaling this type of mold can cause serious asthmatic reactions as well as hay fever and other allergy related problems.

The only way to know for sure what type of mold is growing in your home is to have your home mold tested. Getting a professional mold inspection will ensure that you know exactly what is going on in your home in regards to mold growth and will guide you on to what the next steps are to remove it. Regardless of what type of mold is growing in your home, it is important that you get it removed so that the health effects, regardless of severity do not affect you or your loved ones.