What environmental factor can significantly influence mold growth?

Humidity is a crucial environmental factor influencing mold growth due to its direct impact on moisture levels in the air and on surfaces. Mold thrives in damp environments, and when humidity levels are high, the potential for mold spores to absorb moisture increases significantly. This can lead to rapid colonization and growth of mold, especially in conditions where the humidity exceeds 60%. Controlling humidity is essential in mold prevention and remediation strategies, as lower humidity levels can inhibit the growth of mold spores and help maintain a healthier environment.

Airflow, light exposure, and the type of surface materials can also play roles in mold development, but they do not have the same direct correlation with moisture levels as humidity does. For example, while increased airflow can help reduce humidity, and certain materials may either promote or hinder mold growth, it is the presence of moisture that is the primary driver for mold proliferation. Therefore, managing humidity is a foundational component of mold prevention and control.