Reconnect leaky duct sections photo at left.
The connector in attic is leaking.
The most common issues we find with overhead powerlines during home inspections are trees rubbing up against them and exposed connectors that present an immediate shock or electrocution hazard.
Many builders fail to properly seal these areas or if they do the fiberglass batts fall out of place.
Most people assume this is caused by a leaking roof but that might not be the source.
The easiest solution is to saw out the caulked joint removing about 1 in.
Areas where leaks have.
In addition to making a mechanically sound connection between duct sections sheet metal screws mechanical fasteners nylon tie strips we use metal foil tape to complete the seal on connected metal duct sections.
Water found in these places is commonly caused by condensation in the attic.
Of pipe two cuts.
Kneewalls can help create a finished attic space but they often create insulation and air leak vulnerabilities.
Attic condensation is due to humid air leaking or vented into the attic.
Pvc coupling or insert a 3 in to 4 in.
As you might expect when the caulk eventually fails a trickle of water will leak through and drip down through the ceiling below.
If you have a finished attic you probably have kneewalls those short walls underneath sloped ceilings.
Then either glue in a proper 3 in to 4 in.