I am re-doing a master bathroom. Currently there are (2) separate vent stacks in the upstairs, for two separate bathrooms. One stack from each bathroom. Can I elimiate one of the vent stacks and simply tie into the other and have (1) vent stack servicing both bathrooms.

The master bath had (1) sink, (1) shower and (1) toilet. The new master will have (2) sinks, (1) shower (1) small jacuzzi and (1) toilet. The other bath, which is next to the master, meaning it shares a wall, has (2) sinks, (1) shower and (1) toilet.

The longest distance the plumbing will go from the stack is ~10 feet

The current vent stack in the master is located in a wall, which is being elimiated in the re-do. And it will not be easy to move, do to the location.

Thanks for any advise

Yes. You can run multiple units to a stack. 10 feet is not too long.

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Originally Posted by Kathleenscp

Yes. You can run multiple units to a stack. 10 feet is not too long.

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Kathleen is correct. You can, indeed run multiple fixtures to a single vent stack but that wasn't the question. The question was, "Can I elimiate one of the vent stacks and simply tie into the other and have (1) vent stack servicing both bathrooms."
This is called a "revent" and yes you can eliminate the one vent and use the remaining vent as a common vent for both groups. Good luck, Tom