What is a major factor in preventing mold growth indoors?

Controlling humidity levels indoors is fundamental in preventing mold growth. Mold thrives in damp environments, and maintaining low humidity levels reduces the moisture available for mold spores to grow and proliferate. Ideally, indoor humidity should be kept below 60%, and levels between 30-50% are often recommended for preventing mold growth.

While high temperatures and proper ventilation can also influence mold growth, they are typically secondary factors compared to humidity. High temperatures alone do not prevent mold if the humidity is still high. Proper ventilation can help to some extent by allowing moisture to escape, but without addressing humidity directly, it may not be effective in avoiding mold proliferation. Clear pathways for airflow can assist in ventilation, but again, if humidity levels are not managed, mold can still find a way to flourish.

Thus, maintaining low humidity levels is the most crucial aspect in the fight against mold indoors.