Ductwork repair. Arrived at the home and homeowner explained about the inspection of the duct work leak. Found that the existing duct work is not just a small leak, it was that the outer jacket of the flex line was deteriorated and fell apart. Began to remove the old duct work. Replaced new 6” flex line to the ceiling boot and transfer box. Secured with spray glue, silver tape, and mastic. Also, hung flex line.