What is the main method for preventing mold growth in buildings?

Maintaining proper humidity levels is the main method for preventing mold growth in buildings because mold thrives in environments that are damp and humid. Keeping indoor humidity levels between 30% and 50% significantly reduces the chances of mold spores germinating and developing into mold colonies. High humidity can result from various sources, including leaks, poor ventilation, or inadequate heating and cooling systems, which can exacerbate mold problems.

While using chemical mold inhibitors, regular cleaning of surfaces, and installing air purification systems can play supportive roles in managing mold issues, they do not address the root cause—excess moisture in the environment. Chemical mold inhibitors may help to resist mold for a time, but they do not eliminate the conditions that allow mold to grow. Similarly, cleaning surfaces can remove existing mold but will not prevent future growth if humidity levels remain high. Air purification systems can reduce airborne spores but do not directly control humidity. Thus, maintaining proper humidity levels stands out as the most effective and comprehensive approach to preventing mold growth in buildings.