Defect description
Pic by Doug Edwards, Acorn Home Inspections Attic&Insulation1a
Defect: Open vent in the attic needs to be serviced by a licensed specialist.
If it is an exhaust vent it should extend through an approved flashing to the
exterior or mold and other moisture-related problems could result. If it is a
heat vent, it must be double-walled and extend through an approved flashing to
the exterior. Recommend evaluation by a licensed, qualified specialist.