How Hidden Mold Develops
A small plumbing leak or roof drip can soak insulation and the back of drywall while the painted surface looks perfectly fine. Mold then grows in the cavity, sometimes for months.
Tools for Finding It
Moisture meters, thermal imaging cameras, and borescope inspections allow trained inspectors to identify hidden moisture and mold without unnecessary demolition.
When Cavity Inspection Helps
After known leaks, when you suspect a problem you can't see, or when air sample results are elevated without an obvious visible source.