Like the colors in a box of crayons (but not nearly as fun), mold comes in a variety of hues, including black, white, green and orange.
Water Intrusion
The most common types of mold include aspergillus, cladosporium and stachybotrys atra (also known as black mold).
Aspergillus is a fairly allergenic mold that is commonly found on foods and in home air conditioning systems. Cladosporium is typically a black or green "pepper like" substance that grows on the back of toilets, painted surfaces and fiberglass air ducts. While this mold is nontoxic to humans, it can trigger common allergy symptoms, such as red and watery eyes, rashes and a sore throat.
Mold that appears to be orange or red in color is typically found outdoors, given its nature to thrive on decaying plants or moist wood. This type of mold, which can appear slimy, is harmless and should only be removed for aesthetic purposes.
White mold is not technically a type of mold, but the good news is that this typically indicates the mold is only in the early stages of growth and can easily be treated.
Be on the lookout for signs of a water leak or condensation: water stains that get bigger over time, musty odors, continually damp carpet, or beads of water or puddles on hard surfaces. When you do have water damage, thoroughly clean and dry carpets and building materials within 24 hours if possible, and consider replacing waterlogged items to eliminate the risk of mold.
If you suspect a problem (or better yet, as preventive maintenance), hire professionals to inspect for damaged shingles and siding, poorly connected plumbing and leaky pipes, and other moisture problems, such as inadequate vapor barriers. Mitigate the issues as soon as possible.
If you suspect a problem (or better yet, as preventive maintenance), hire professionals to inspect for damaged shingles and siding, poorly connected plumbing and leaky pipes, and other moisture problems, such as inadequate vapor barriers. Mitigate the issues as soon as possible.
Biological Contaminants
The EPA considers bacteria, molds, mildew, viruses, animal dander, cat saliva, house dust, mites, cockroaches and pollen all biological contaminants. Excessive moisture creates breeding grounds for these contaminants, so ventilate adequately and keep relative humidity between 30 percent and 50 percent to prevent condensation on building materials.
Regular household cleaning and maintenance go a long way toward limiting exposure. Change filters and have heating and cooling equipment cleaned and checked regularly by a professional; these systems can become not only breeding grounds for mold and other biological contaminants but also superhighways for dispersing them throughout the home.
If these methods don't suffice, an indoor air-cleaning device may help an affected area. However, avoid ozone generators that are sold as air cleaners. The EPA warns: "Whether in its pure form or mixed with other chemicals, ozone can be harmful to health."
Basements can be a particular trouble zone. The EPA recommends you clean and disinfect basement drains regularly and that you not finish a basement unless all moisture issues are abated.
Regular household cleaning and maintenance go a long way toward limiting exposure. Change filters and have heating and cooling equipment cleaned and checked regularly by a professional; these systems can become not only breeding grounds for mold and other biological contaminants but also superhighways for dispersing them throughout the home.
If these methods don't suffice, an indoor air-cleaning device may help an affected area. However, avoid ozone generators that are sold as air cleaners. The EPA warns: "Whether in its pure form or mixed with other chemicals, ozone can be harmful to health."
Basements can be a particular trouble zone. The EPA recommends you clean and disinfect basement drains regularly and that you not finish a basement unless all moisture issues are abated.
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