5 Mold Types You Need to Know About

a shocked man in a nice blue shirt looks at mold growth in his home

You’re probably aware that water damage can encourage mold growth, but did you know that there are more than one species of mold? Each kind of mold has different appearances, favored environments, and health effects — and some are more dangerous than others. For more details on the different types of mold out there, here are five common kinds that homeowners need to look out for and what health risks they pose.


Alternia is a common type of mold that favors warm weather, making it more prevalent in the summertime. While it is primarily an outdoor mold, alternia can be brought indoors on clothing, winds, and other modes of transportation. This mold species is a major cause of allergic reactions and can trigger sneezing, congestion, and other health issues for those who have mold allergies.


While many different types of mold prefer warm environments, cladosporium is different. This hardy mold can thrive in both warm and cold climates, allowing it to plague food coolers and cold storage — it can even grow on glass surfaces. While it isn’t one of the most dangerous kinds of mold, it can nevertheless be problematic. Its ability to grow in cool locations has made it a threat to perishable food. In addition, exposure to cladosporium can trigger serious asthma attacks.


Many recognize stachybotrys as black mold, which easily grows on paper, wood, cotton, and similar materials. Stachybotrys require a constant source of moisture to continue growing and can take a long time to develop. However, when it does grow, stachybotrys is one of the dangerous kinds of mold. It has high toxicity and can cause a wide array of health problems.


One of the different types of mold homeowners need to watch out for is aspergillus. It’s very common and is responsible for infesting houses, apartments, offices, and similar locations. Aspergillus spores are found in high quantities indoors and can grow in a wide range of materials, including cardboard, shelving, cloth, and leather products. If you learn of aspergillus growing in your home, you must take action immediately — aspergillus is classified as a toxic mold and can produce mycotoxins. Not only can aspergillus cause health problems in those with lung issues and poor immune systems, but it’s also hazardous to pets.


If you notice a colorful mold growing in your home, then it’s likely penicillium. It can appear in shades of green, blue, and even yellow and grows in drywall damaged by water, ceiling tiles, cabinets, and other common building materials. Penicillium is one of the different types of mold you need to be wary of because of its toxicity and ability to spoil food.

Have you discovered different types of mold growing in your home or business? Then our mold remediation in Bucks County, PA, and the surrounding areas will be there to help. Rightway Waterproofing offers a wide array of services to ensure your property is safe from mold, including basement waterproofing in Wilmington, DE, and nearby locations. For further information and to schedule an appointment, give us a call today.

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