There are multiple types of common mold that every adult needs to be aware of. There are hundreds of different types of mold species in our atmosphere. We will address the primary six types of molds that affect households and indoor air quality. Different health problems can occur depending on the type of mold to which you are exposed to. Understanding these types of common molds, symptoms to look for and the amount of area affected. Will help you determine if a professional mold removal services are needed.

common types of house mold

Here are the 6 Top Common Household Molds:

Alternaria  Mold

Alternaria is common outdoors. However, it also grows in damp places indoors. Common examples are tubs & showers, under sinks, crawl spaces and more. It is also very common in buildings that have suffered from water damage. Use caution. Because Alternaria spreads easily from one area to another.

  • CHARACTERISTICS: Dark green, gray, or black with long, velvety hairs.
  • WHERE IT GROWS: Carpet, clothing, windows, damp areas and basements
  • HEALTH EFFECTS: Respiratory problems, asthma, and hay fever

Aspergillus  Mold

Aspergillus is common indoors. Because it is very hard on the respiratory system and can even cause a condition called hypersensitivity pneumonitis and inflammation of the lungs. Aspergillus spores easily become airborne. It can greatly affect the indoor air quality and the respiratory system of occupants. Also, it grows very quickly in the right conditions.

  • CHARACTERISTICS: Grey, brown, yellow, green, white, or black.
  • WHERE IT GROWS: Walls, insulation, clothing, moist areas, crawl spaces, and basements.
  • HEALTH EFFECTS: Infections for people with weak immune systems. Produces a carcinogen called aflatoxin. Special care for children, elderly or Aids patients should be given.

Cladosporium  Mold

Most types of mold thrive and prefer warmer climates, Cladosporium can grow easily in cool areas. Therefore, we see Cladosporium on fabrics, clothing, carpets, and wood surfaces. Including furniture, cabinets and wood floors and substrates. A powdery substance. First of all, it requires careful handling. Because spores can easily become airborne and contaminate other areas.

  • CHARACTERISTICS: Green, brown, gray, or black.
  • WHERE IT GROWS: Food and plants, fabrics and clothing, wood and furniture, insulation
  • HEALTH EFFECTS: Harmful to people with asthma, allergies and weak immune systems.

Memnoniella  Mold

Memnoniella resembles Stachybotrys the best, only smaller. Generally, found growing together and both considered toxic. After that, the wind carries Memnoniella spores. They like to settle in a moist, warm environment. This type of common house mold will continue to quickly multiply until there is a change in condition.

  • CHARACTERISTICS: Dark green or black
  • WHERE IT GROWS: Cotton or wool, canvas, ceilings and walls, damp areas, crawl spaces, and basements.
  • HEALTH EFFECTS: Severe respiratory issues, headaches, and coughing

Penicillium Mold

Penicillium is the most known of all of the common house molds. Because penicillium is the mold that develops with rotten foods. It’s one of the mold types that spread quickly and easily from one area to another. Above all, exposure to penicillium can cause allergic reactions, chronic sinus infections, and inflammation of the lungs. Also, it can appear as a blue mold.

  • CHARACTERISTICS: Blue, green, white or black
  • WHERE IT GROWS: Food, walls, insulation, moist organic matter.
  • HEALTH EFFECTS: Stomach issues if ingested, congestion, coughing, and eye irritation.

Stachybotrys Chartarum Mold

Of the most commonly known house molds, is “black mold” due to its slimy black appearance. Called “toxic mold”. The mold itself is not toxic. It does produce toxic compounds called mycotoxins. Leading to severe health problems when people come in contact or breath it. Because a musty odor is common with Stachybotrys. It usually grows in places that stay damp for a length of time. Also, known as the most dangerous form of mold. Hence, removal only by a certified mold removal specialist.

  • CHARACTERISTICS: Black or dark green. Slimy in texture.
  • WHERE IT GROWS: Walls, ceilings, floors, moist areas, crawl spaces, basements, attics, air conditioning vents, and more.
  • HEALTH EFFECTS: May cause cancer or Alzheimer. Severe respiratory issues, headaches, asthma, dizziness, joint pain, fatigue, depression

What Our Customers Say

Excellent Company /Dayna N. of Overland Park, KS

Excellent Company! Completely professional and efficient. Ben and Ben and the rest of the crew did an awesome job getting the mold cleaned out of our basement and rebuilding the stairs. Very nice guys that know what they are doing! I highly recommend Fresh Start!!! We are very pleased with our fresh clean basement!! 5 Stars!

Very Professional & Honest /Jenn S. of Keller Williams Realty

Ben with Fresh Start has done work on several of my properties. He and his team have been very professional and honest and got the work done in a quality way. These guys tell you honestly what needs to be done and if you don’t need much they tell you that to….very refreshing in this kind of business to find honest people. I highly recommend these guys without hesitation and have made them my preferred vendor. 5 Stars!

Very Competitive on Pricing /Mike R. of Parkville, Misosuri

They did a fantastic job of removing old insulation and installing new paper backed insulation in our walkout basement. They were professional and very polite. I would highly recommend them to anyone who has moldy insulation that needs to be removed and replaced. They were very competitive on their pricing. I would say that I got more than my moneys worth from this great company. 5 STARS!!

Exceptional Professionalism /Jill T. of Mission Hills, KS

Ben Fetzer, the owner of Fresh Start Restoration, is exceptional in his professionalism, communication skills, and work ethic. He was on the job with his crew every day, They were very respectful of our home, leaving things tidy each day. Ben went over and beyond making sure all aspects of our job were handled properly. He is just a wonderful person who I would recommend every time. 5 STARS!!!


CALL NOW Since 2008, Fresh Start has proudly served the Kansas City metro area with a 5-Star rating! With a customer education focus, we can answer all of your questions! Simply call today to speak with one of our certified & experienced mold professionals!