Mold is a type of fungus that flourishes in damp, humid environments. It reproduces through tiny, microscopic spores that travel through the air. When these spores land on moist surfaces, they begin to grow by absorbing the moisture, which allows them to spread and form visible colonies of mold. Think of water left over from roof or window leaks, faulty HVAC drainage, pipe bursts, or even humidity in a bathroom.
Common types of mold include black mold (Stachybotrys), known for its potential health risks, along with other varieties like Aspergillus, Penicillium, and Cladosporium.