Commercial spaces get hit pretty hard when moisture control fails. The sheer scale of a warehouse makes treating fungal growth completely different from scrubbing a small residential bathroom. Bleach and regular store products only wash the surface discoloration away while leaving the microscopic roots deep inside the drywall and concrete. Those chemical fumes will also build up fast in an enclosed area with poor airflow and put your workers at risk. Getting a commercial dehumidifier running right now should be the immediate priority to stop things from spreading further. Once the air dries out a bit, assessing the actual structural damage behind those walls will dictate what steps come next.
