How do you know if you have mold?

Moisture control is the key to mold control. In the presence of excess moisture, mold can proliferate on building materials like plywood, tile, and drywall. Common sites for indoor mold growth include bathroom tiles, basement walls, leaky water fountains or sinks, and areas around windows where moisture condenses.

Potential causes of water intrusion include roof leaks, localized flooding from plumbing failures or heavy rain, and slow leaks in plumbing fixtures. Uncontrolled humidity can also be a source of moisture leading to mold growth, particularly in hot, humid climates.