Mold (fungus) is found in all environments where it plays a vital role in our ecosystem: biodegrading waste organic matter (old leaves, un-picked fruit, etc.).
Indoor mold problems increased greatly over the last 50 years due to new construction methods and materials utilized and ineffective maintenance procedures. To conserve energy, buildings have been sealed tight, preventing fresh air from entering a building and sealing in moisture. Once moisture enters the building, mold has everything it needs to grow:
1) a food source, such as wood supports, drywall backing, wall paper, carpet, cabinetry, books, etc.
2) a water source, such as a busted pipe, roof leak, poorly graded building site, or other moisture causing condition
3) warm temperatures (40-120°F)
Without the natural competition of other molds and bacteria found outside, indoor mold spores grow unchecked, eventually reaching a level that affects human (and pet) health. The result is that auto-immune diseases have increased, the occurrence of asthma has skyrocketed, and Alzheimer’s has become common.