Homeowner had a constant leak in the basement ceiling. Cut open section of basement ceiling and the 3 inch PVC vent line was leaking from upstairs. Cut out section of drywall in the main floor master bathroom. Located vent stack and the towel hanger was screwed into the vent. The upstairs kids toilet was constantly running causing the constant leak. Fixed the toilet and cut out section of pvc piping. Installed new section of piping and mechanical coupling. Filled kids tub and drained to test for leaks. Everything is working properly at this time.