Bathroom sink AND tub leak in ceiling below

Ruth murray

New Member
I can’t afford a plumber so i have done my share of plumbing repairs but I am stumped.
When I run water in upstairs bathroom sink or Tub/shower, water leaks through to ceiling below. I can flush toilet between them and no leak. I have looked in access panel and tub drain and back flow and everything dry. I have had this happen before only leaked when ran water in tub shower and it was tub drain. I am stumped as Leaking weather i run sink water or tub shower. what could this be. no leaks when not running water ? please help. no back up water in tub or sink. no sounds. water
comes through ceiling 3 -5 minutes after i start running water
 
Sounds like the waste pipes are combined under the floor and a joint is leaking. You will need to lift a board or make a hole in the ceiling to take a look.
 
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