Vanity shelf interfering with trap install

rustyedge

Why couldn't the blue pipe in the picture be cut so the trap is closer to the bottom of the sink? You should then be able to connect up to the drain with some slip fittings and a 90.

TheEplumber

refer to Alan's link in post #9

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jkk

So I cut a hole in the shelf in order to the trap low enough.

For the drain pipe connection to the sink, do I use tape and dope on the plastic threads? Do I also tape and dope the threads at the plastic nut that forces the rubber washer tight?

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Alan

You are going to have problems with that plastic drain.


Here's what I do :

Slide the rubber washer as far down as it will go without disengaging the nut.

Run a generous bead of clear caulking around the top edge of that rubber washer.

This way when you tighten it against the sink, the washer spreads the caulking through the threads.

If you don't do this, water will weep down through the threads. The plastic is not strong enough or the washer is not squishy enough, i dont know which, but they are junk.

The slip joint connections will not require teflon or pipe dope.

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jkk

The plastic drain pipe came with the sink. I agree it's junk. But, won't anything else leak since it has to butt against the sink with rubber washer? Is there a better way (short if buying better sink)?

Haven't used tape/dope in compression fittings.

TheEplumber

Take the pop up assembly to your local box store and find an upgrade- they can be purchased separately.

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joes plumbing

Just drill the stupid cabinet with a hole saw and your done