Types of Mold: All You Need to Know

May 28, 2021

What kind of house mold is dangerousMold is a dangerous and toxic substance that thrives in specific conditions. In most cases, it can be found in dark and damp environments with temperatures between 60 and 80 degrees Fahrenheit. There are various types of mold, and removing any of them requires assistance from a reliable Irvine mold removal service to prevent any health problems.

Knowing how to identify mold is paramount since it helps you address the problem immediately. We’ve come up with a list of the most common types you can see in your house. The moment you notice any of these, it’s time to bring in mold removal professionals and have them deal with the harmful substance.

What are the 4 different types of common mold?

Here are the 4 most common types of mold you can find after water damage:


Acremonium is a toxic mold that changes its appearance as it ages. At first, it appears as small damp patches that later turn into a powdery substance. Acremonium can be pink, orange, gray, or white. It spreads throughout household systems, such as cooling coils, humidifiers, window sealants, and drain pans.


Alternaria features a velvety texture with brown or dark green hairs. It generally develops in extremely damp areas. You can find it in the shower, bathtub, or under a leaking sink.


American households are often plagued with aspergillus. This mold has long spores that form thick walls or layers wherever it grows. As a result, it develops long stretches across various surfaces, making the remediation process very difficult.


Chaetomium is known for its changing colors, with nuances ranging from grey, white, brown, and black. It also features a cotton-like texture and can be found near leaking sinks, basements, and roofs.

What kind of house mold is dangerous?

All four above mentioned types of mold can be extremely dangerous. That’s why it’s crucial to address the root of the problem causing their growth since mold can return after removal.

Here are the most common health effects these strains of mold can trigger:

  • Acremonium: Prolonged exposure to acremonium can result in bone marrow disease, immune system impairment, and damage to many other organs. Additionally, it can hinder brain functions due to its carcinogen properties.
  • Chaetomium: Apart from general allergies, like red and watery eyes, chaetomium can cause autoimmune diseases and neurological damage.
  • Alternaria: Alternaria can lead to many unpleasant conditions, such as coughing, sneezing, sore throat, headache, dizziness, and fatigue.
  • Aspergillus: Exposure to this mold can bring about severe allergic reactions, aspergillosis, and lung infections.

What kind of mold is in my house?

We’ve mentioned the main characteristics of the 4 most common types of mold. Here is some advice that will help you recognize them:

  • Acremonium: Small mold that becomes a powdery substance over time. It comes in various colors, including pink, white, grey, and orange.
  • Chaetomium: Cotton-like texture that starts off as white and turns grey, brown, and black.
  • Alternaria: Velvet-like texture with brown or dark green hairs.
  • Aspergillus: Long spores that form thick walls or layers of mold.

The finest Irvine mold removal service is just a phone call away

What are the 4 different types of common moldAny house or business can turn into a breeding ground for mold after water damage. The substance can spread throughout your property in 2-3 days once the infestation starts and can trigger harmful allergens.

If you’ve noticed signs of mold growth in your home, reach out to EHS right away. Our accomplished team has all the training, expertise, and equipment necessary to deal with the issues and rid your home of mold for good.

Book EHS at any time of the day! You’ll finally be able to take a stroll near the Balboa Pier without brooding on mold issues.