Common Sources of Mold

Three Conditions Required for Growth

Whether indoors or outside, mold needs the same three conditions to grow:

  • the right humidity,
  • an organic food source and a
  • source of moisture.

These conditions are present to varying extents in most homes and buildings in the southeastern United States. We live and work in a very popular spot for mold growth. The climate of the Carolinas provides the humidity. Home building materials provide the food source. Unwanted water intrusion in our living spaces provides the moisture necessary for mold to thrive.

When conditions are right, mold growth can begin in 24-48 hours. Quick action is needed to stop mold from evolving into colonies that negatively impact a structure’s integrity and indoor air quality.

Identifying the Source

Because each mold case has a unique set of contributing factors that need to be evaluated, it is important to know where to look and how to remove mold issues safely and quickly. The key factor in mold remediation is controlling the source of moisture. Leaks, weather events and malfunctions in building systems are likely sources of unwanted water intrusion. Identifying these sources of moisture is the first step to fixing any mold problem. Without correctly identifying and addressing the source of moisture mold growth will start again at a future date.
The organic food sources mold needs to grow on exist almost everywhere in most structures. Common sources of mold include:

  • Wood, paper products, fabrics and most building materials are sources of food mold spores come in contact with. If moisture and the right humidity are present, there is an opportunity for mold to grow.
  • Leaks and plumbing system problems, roofing systems and failures in the building envelope to properly shed water are places moisture can often be found.
  • Extreme weather and flooding also introduce unwanted water into structures. Over time Mother Nature throws a lot at homes and systems fail as a result. Known problems should be addressed as soon as possible to avoid the problems associated with water damage.
  • Human error also introduces unwanted moisture into our homes. When tubs, showers and dishwashers overflow the areas affected need to be dried completely. Water will follow gravity and end up somewhere conducive for mold growth.
  • Wall cavities, behind floors and ceilings and hidden areas like attics, crawl spaces and basements are also common places mold grows. Problems can go undetected for long periods of time and require different remediation solutions.