Do not treat condensation leaks as just a few pinholes if the duct is sweating along the run.
Check
Identify humid source: shower, locker, kitchen, laundry, or exhaust.
Check cold-space exposure and missing insulation.
Look for pitch/backfall and low points.
Seal seams with approved moisture-resistant method.
Wrap with approved vapor barrier/insulation where required.
Steps
Identify humid source: shower, locker, kitchen, laundry, or exhaust.
Check cold-space exposure and missing insulation.
Look for pitch/backfall and low points.
Seal seams with approved moisture-resistant method.
Wrap with approved vapor barrier/insulation where required.
Say this to your foreman
The spiral exhaust at [location] is dripping through seams in a cold space. I checked moisture source and insulation. Do you want seams sealed and the run wrapped per vapor-barrier detail?