Bathroom Remodel = How to Wet Vent via Concrete slab with existing drains

Users who are viewing this thread

Sanders H.

New Member
Reaction score
Hello to all,

I just realized I may have put this in the wrong forum...Any assistance would be appreciated.

I am in a pickle in what do to about the wet venting in my small bathroom remodel, where I am turning (at the behest of the other) a room which had a double sink vanity, toilet and tub/shower combo into a separate tub, shower and toilet. The vanity will stay in place.

I have read multiple posts on this site about wet venting and I am all over the place on the proper way for a wet vent configuration, which fittings to use, etc.

What is the best way to wet vent this space:
Connect a double wye to split the connection:
1) Thoughts on the angle and long sweep to the 4" sewer pipe
2) A wye connector going to the original 2" drain for air
3) The second line going towards the tub and shower and splitting off to each t-trap

I would definitely appreciate your thoughts on this one.

Thank you,


  • bathroom diag1.jpg
    bathroom diag1.jpg
    90.8 KB · Views: 194
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks