Plumbing – Basement Bathroom Plumbing – Rough in Backwater Valve

basement-refinishingbathroomplumbingrough-in

I am trying to figure out how in the world to frame this basement bathroom. As you can see from the image, there is a backwater valve that would end up right in the middle of the room. I know that code requires access to this valve and most basement rough ins have this much closer to the sump pump or other mechanical area, not in the middle of the bathroom.

Any ideas for how I would be able to run walls for the bathroom? I was planning to go off the pole and section off the room, but I dont know what to do since there will be a valve right next to the toilet.

What am I missing or am I looking at this all wrong?

Thanks for any help or answers you can provide!

Advice? Do I need to jackhammer the floor to move the BWV closer to the sump pump?

Best Answer

While I totally agree it's the wrong place for the BWV, it's not sticking out of the floor. So, is your problem with doing a finished floor? As far as framing goes, I'd include the sump corner & make that whole end into a closet in the powder room.

Related Solutions

Plumbing – Basement bathroom rough-in with backwater valve question

Just cut out the T and then drain/vent there.
You don't. It should have been somewhere else in the basement. Not sure what they were thinking putting it next to a shower. You would put a backwater valve in a laundry or storage room.
Who knows but it sure doesn't look like it's vented.

I cannot think of a logical design for your bathroom. The plumber who did your rough-in must have been high. You have a sink on the left then toilet... then in the corner is what? I guess you could put shelving there but I never design something to hold items to get pee spray. Also if the shower runs with wall it might stick out further than toilet. There is no good solution there.

My advice is to jackhammer up the backwater valve and move that into what will be unfinished space. While you have that ground broken up by shower, make sure it vents. Design your bathroom so that door is on the far left. You walk in and have the sink to your immediate left (might actually be able to keep the T in place). Then toilet after sink. Across from toilet is the shower - you are moving the valve so shower will be installed perpendicular to wall. To vent your shower go straight to the wall and then follow the wall over to sink vent.

If your backwater valve comes in on that wall then basically your costs are concrete and extra pipe. If it comes in somewhere else you might be able to just cut out pipe and reinstall head. You do not want this anywhere near a newly renovated bathroom.

Plumbing – Need guidance for venting a new rough-in for basement bathroom

The new stack in the top right should connect downstream of the toilet. It can pass behind the toilet and then run parallel to the side wall to the corner. This leaves you with a wet vent via the vanity that servers the bathtub and toilet:

                     Vanity    New Stack
                       |          |
                       |          |
   Shower ------------\|          |
                       |          |
                       |   Toilet |
                       |/----     |
                       |          |
                       |          |
                       |/---------/
                       |
                       |
                       |

As a minimum, the wet vent would need to be 2” as shown on your drawing.

Best Answer

Related Solutions

Plumbing – Basement bathroom rough-in with backwater valve question

Plumbing – Need guidance for venting a new rough-in for basement bathroom

Related Topic