The best means to prevent or control the spread of mold growth is to deny the spores the moisture necessary for germination. Therefore, regulating the environment, especially relative humidity is essential for preventing the deterioration of valuable property from microorganism growth. Relative humidity levels should be routinely monitored. Spore germination is less likely to occur if relative humidity is controlled between 35-45 percent. When relative humidity levels rise above 65 percent, the use of portable dehumidifiers might be necessary to reduce the moisture content of the air. A temperature between 68-72oF (spring/summer) and 70-740F (fall/winter) should be targeted. These levels only decrease the potential of germination and growth; they do not eliminate it. Therefore, other factors, such as adequate air circulation should be maintained; a fan will help to increase circulation.
The following guidelines for fungal invasion prevention:
1. Place books/book shelves, and furniture at least 1-2 inches from the wall for airflow.
2. Store books, materials, important documents, and collectibles in a room where there are no extreme temperature/humidity changes, and not in extreme light/darkness.
3. Keep indoor plants to a minimum as they draw fungus, bacteria, and other microbes.
4. Regularly inspect for mold infestation wherever water/moisture has been historical.
5. Open closet doors for air circulation. Use a 40-watt light bulb to dry/heat closet air. (more…)