Whenever we hear about mold infestations, we imagine homes being cordoned off, men hazmat suits, and people losing their properties. Although exaggerated, there is a reason for this panic towards these microscopic plants which can affect your health.

Several types of molds have been proven to be dangerous to humans. Many of them are seen to cause severe reactions, both with short and long-term exposure. So, as a home or property owner, you must know which molds you should always keep an eye on.

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To help you out, our excellent waterproof specialists listed them down below. We also threw in some tips on how you can fight these pesky molds.

A list of the most common species of toxic molds:


This type of fungus proliferates in climate zones during spring and summers. It can cause allergic reactions and respiratory irritation to individuals with weak immunities. Its spores can easily be carried by the wind, thus spreading it within your home.

They are found in very humid places such as basements, crawl spaces, and kitchens. Other materials that Alternaria can grow on include cardboard, electric cables, textiles, and canvas materials.


Aspergillus is a relatively common type of mold. In fact, most of us breathe it every day without any severe reactions. However, if you have a compromised immune system, you should avoid places with a high concentration of Aspergillus. Aspergillosis is an infection due to the inhalation of this type of mold.


Chaetomium is a type of fungus under the Chaetomiaceae family. Its natural habitats include soil, air, and plant debris. It thrives in high moisture places such as flooded basements and wood boards. Hence, it shares the same environment with black molds, resulting in people confusing the two

Inhalation of Chaetomium spores may cause red, watery eyes and trouble breathing. Overexposure of immunocompromised individuals can also result in neurological damage and certain autoimmune diseases.


Fusarium is a genus of filamentous fungus. They are often found on soil and plant debris. They, however, can also grow on other suitable surfaces that are moist or wet. Besides respiratory diseases, this fungus is known to cause a severe eye infection named fusarium keratitis.


This fungus is famous for its contribution to the discovery of the drug penicillin. Although scientists can create drugs from it, Penicillium can still be dangerous in its fungiform. Inhaling its spores can cause bronchitis, asthma, and other respiratory problems.


Probably the most recognizable mold is the Stachybotrys. People commonly refer to it as the black mold. If there is a reason for the panic towards molds, then the Stachybotrys would be it. A person who inhales the spores of black mold can experience a wide range of symptoms and reactions.

These symptoms include diarrhea, memory loss, flu-like symptoms, headaches, and severe respiratory damage. The danger of black molds is most significant for children, people with asthma, and those with weak immune systems. If black mold is found, homeowners should immediately contact authorities and mold removal experts.

What to Do If You Suspect Your Property Has Toxic Mold

The first thing you should do if you suspect mold infestation in your home is to have specialists test your property. Doing so will make sure that there is an actual need to get mold removal services.

If the experts confirm your suspicion, look for a mold removal company for the specific type of mold you have. This part is vital as not all companies cater to all kinds of molds. Spores may also be found in the air of your home. If so, it would be best for you to stay somewhere else while the removal is ongoing.

After the removal of the molds, it is important to take steps to make sure that infestation doesn’t happen again. A waterproofing service can help you prevent dampness and moisture that molds love to grow in. Seattle Permadry Waterproofing offers excellent basement and crawl space waterproofing services. Click here to learn more.