Molds are fungi that can be found everywhere. They reproduce by means of spores that are invisible to the naked eye and float through outdoor and indoor air. These fungi can grow on almost any substance where moisture is present. Molds can grow on ceilings, walls, under sinks, drywall, ductwork, furniture, and wood, among other materials. When there is a lot of moisture present, high humidity, and temperatures are above 65°F, mold spores become active and start to grow rapidly. There are many types of mold, and none of them will grow without water or moisture. Outdoors, molds can break down dead organic matter, such as fallen leaves and dead trees. There is no practical way to eliminate all mold and mold spores in the indoor environment. The key to controlling indoor mold growth is controlling the moisture source.
NOTE: VDH does not have the capability to provide environmental testing or remediation for mold problems, or provide legal advice. Concerned citizens are advised to follow the practical advice given on this site, refer to additional resources, and if necessary, consult an environmental specialist.
General Information
Black Mold
School Mold Reporting
Mold Remediation in Schools
For Help With Mold
Homeowners
Commercial Buildings
Tourist Lodgings
Mold Remediation and Inspection
Mold Cleanup and Prevention
- Fix leaks promptly, eliminate sources of moisture, and clean up the mold
- Clean and dry or wet building materials and furnishings within 24-48 hours of a flood or leak
- Use air conditioners and/or dehumidifiers
- Inspect and repair the ventilation system
- Reduce humidity at (try to achieve 30 to 60 percent)
- Use exhaust fans to circulate indoor moisture (from cooking, dish-washing, showering) to the outdoors; and remove carpeting in areas of excess moisture (from cooking, sinks, bathtubs and showers)
- Add insulation to reduce the potential for condensation on cold surfaces (i.e., windows, piping, exterior walls, roof, or floors)
Clean-up
Clean-up After a Flood