Understanding Mold Origins

Basics Understanding Mold Origins What it is and why it grows

Mold is made of microscopic fungi that release spores into the air. These spores are everywhere—indoors and outdoors—and enter homes through openings, ventilation, clothing, and pets. Spores usually aren’t a problem until they land on a damp surface with enough organic material to feed on and moisture remains long enough for growth.Common indoor materials like drywall paper, wood framing, subflooring, cardboard, dust, fabrics, and some insulation can support mold when they stay wet. Even small hidden leaks or damp, poorly ventilated corners can allow colonies to form. Because mold needs both moisture and a food source, prevention focuses on keeping materials dry and limiting long-term humidity.