Not Enough Room For P Trap

I need help solving a P trap problem.

I installed the faucet and drain on my free standing vanity and asked my plumber to measure off it to determine where to rough-in the bathroom sink discharge. Somehow she got it about an inch too low. I can't fit a P trap in because it is blocked by the lower vanity shelf.

One option is to cut into the vanity shelf to make a slot for the lower portion of the P trap. But I don't really want to do this. because it might interfere with a drawer, not to mention, look stupid. A second option is to do a S trap kind of thing but I keep reading that S traps are bad.

What can I do?

I would try a glue trap. The ones that are a little heaver than the one you have in the pic.

You could also cut a U-shaped notch in the back end of the drawer. Paste a copy of the plumber's business card next to the area.

Try an 1&1/4" chrome trap as they tend to be smaller and tighter bend, it may just fit in there. Another choice is to pipe it with a Studer vent (AAV), cut the pipe so there is only aprox an inch sticking out of the wall, glue on a street-90 pointing straight up, glue a tee right on top and angle the bull of the tee to accomodate your trap (maybe straight on, maybe slightly to side of too close). Add four inches of pipe to the top of your tee and an AAV.

drain

Did she know there was going to be a shelf and drawer at the bottom of the sink? My neighbor did the same thing when she bought her cabinets, but that was months after the drains were installed. One drain had to have an oval cut in the shelf for the trap, but it did not interfere with the drawer below it.

hj,

She knew. I had the vanity built and sitting in a different room. I told her to make sure she measured to accommodate the trap. I also told her to consider the finished floor height that would include tile and backerboard. She may have measured off the subfloor instead.

Sandpiper Plumbing said:

Try an 1&1/4" chrome trap as they tend to be smaller and tighter bend, it may just fit in there. Another choice is to pipe it with a Studer vent (AAV), cut the pipe so there is only aprox an inch sticking out of the wall, glue on a street-90 pointing straight up, glue a tee right on top and angle the bull of the tee to accomodate your trap (maybe straight on, maybe slightly to side of too close). Add four inches of pipe to the top of your tee and an AAV.

Click to expand...

I'll try the 1&1/4" chrome trap first. If that does not fit I'll probably cut into the shelf. The AAV thing sounds too complex for me and the vanity area for the plumbing is kind of tight so it would be nice not to have extra pipes under there. Thanks for the suggestions!