Start with conditions, not a product
Opening a wall or ceiling without proper containment just spreads the problem to the rest of the house. Getting the barrier and airflow right comes before any demolition.
Build a complete scope
- What is keeping it wet, identified before the cleaning is costed
- Whether cooled surfaces meeting humid air explain it without a leak
- The barrier around the work and how air leaves it
- What is removed versus cleaned in block or plaster construction, and why
- Verification afterward, and the humidity-control fix that prevents a repeat
St. Petersburg context
Containment work in the historic districts has to work carefully around original plaster, wood trim, and brick construction, while newer CBS neighborhoods give more straightforward drywall access. Either way, the city's low elevation means standing water from a heavy storm can sit around a work site longer than it would somewhere with better natural drainage.