1. Identify problem areas in your home and correct them. Preventing mold from growing or spreading might be as simple as ripping up carpet in a damp basement, installing mold-resistant products, or repairing damaged gutters.
2. Dry wet areas immediately. Mold can't grow without moisture, so tackle wet areas right away.
3. Prevent moisture with proper ventilation. Make sure an activity as simple as cooking dinner, taking a shower, or doing a load of laundry doesn't invite mold by providing proper ventilation in your bathroom, kitchen, laundry room, and any other high-moisture area.
4. Equip your home with mold-resistant products. Building a new home or renovating an old one? Use mold-resistant products like mold-resistant drywall or mold-resistant Sheetrock, and mold inhibitors for paints.
5. Monitor humidity indoors. The EPA recommends keeping indoor humidity between 30 and 60 percent. You can measure humidity with a moisture meter purchased from your local hardware store.
6. Direct water away from your home. If the ground around your home isn't sufficiently sloped away from the foundation, water may collect there and seep into your crawlspace or basement.
7. Clean or repair roof gutters. Have your roof gutters cleaned regularly and inspected for damage. Repair them as necessary, and keep an eye out for water stains after storms that may indicate a leak.
8. Improve air flow in your home. Without good air flow in your home, that excess moisture may appear on your walls, windows and floors. To increase circulation, open doors between rooms, move furniture away from walls, and open doors to closets that may be colder than the rooms they’re in. Let fresh air in to reduce moisture and keep mold at bay.
9. Keep mold off household plants. They're beautiful and help keep your indoor air clean — and mold loves them. The moist soil in indoor plants is a perfect breeding ground for mold, which may then spread to other areas of your house.
[All information is from mnn.com]