Out of plumb riser

Gary7 · Mar 21, 2008

I need to mount a shower drain as level as possible and I'm dealing with a seriously out of plumb riser. Most of the problem is that the horizontal line is sporting more like a 3/4" per foot slope rather than 1/4". This is all under a concrete slab and I've dug it out down to the P-Trap. What's the best way to plumb the riser? I have about 1.5-2 feet of riser to play with.

Attached are some pics. Just for scale, that's a little 6" torpedo level.

Thanks folks!
Gary

Redwood · Mar 21, 2008

Put in a couple of 1/16 bends to level it out some?

Sponsor · 2022-01-29T12:20:58-0800

hj · Mar 22, 2008

riser

Cut it off low and use a coupling. It will have more than enough movement so that you can straighten it out. Just hold it vertical until the cement hardens.

Gary7 · Mar 22, 2008

A coupling I can handle. Not sure I could handle the 22.5's and still keep it centered. I'd probably have to cut the P-Trap too and just lay out the whole thing from scratch. Not sure I'd be up to that task.

Which coupling is the best to use? Seems like the flexible would give me plenty of wiggle room, but is it safe and long-lasting enough when buried? Does the shielded offer enough flexibility for me to straighten the riser?

Thanks again,
Gary

MACPLUMB · Mar 22, 2008

Go With The Proflex Coupling
The Style Of Fernco Is Not Legal Underground Or Inside The Footing
You Will Be Able To Get Adjustment Out Of The Proflex

Dunbar Plumbing · Mar 22, 2008

Street 45 and a regular 22 starting from the top of that trap, swivelled will do the trick. Might be a talent if you can't move your center on the drain.

hj · Mar 22, 2008

coupling

Use a glued coupling. There is plenty of movement in it before it hardens to line the pipe up correctly.

Out of plumb riser

Gary7

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