No clue why this is leaking

derekb · Jul 24, 2013

Hi everyone. we did a full gut of our existing bathroom and as I've done with other reno's, cut the existing plumbing off and replaced it completely. I've never had an issue like this that i couldn't figure out. When we water tested it i had no leak. Now both sinks are leaking (very slowly) at the joint where the nut screws down. Water is slowly seeping out through the groove. I've tried to tape it but that didn't help. Anything i'm missing on this? thanks for the help!

Cacher_Chick · Jul 24, 2013

I can't see where your leak is, but the water can leak down the threads on the tailpiece if you don't use pipe dope on the threads.

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derekb · Jul 24, 2013

new picture - shows the leak

Sorry but i thought my first attempt at this saved but clearly not. here is the picture showing the leak.

cacher_chick said:
I can't see where your leak is, but the water can leak down the threads on the tailpiece if you don't use pipe dope on the threads.

Tom Sawyer · Jul 24, 2013

Those traps suck and are the wrong size. Trash them and get 1-1/4" traps and adapters.

derekb · Jul 24, 2013

That was my next plan if this wasn't easily fixable. looks like another trip to a big box store! thanks for the help!

hj · Jul 24, 2013

Those are lousy traps and I NEVER use them. Tighten the nut a bit more. But I DO use 1 1/2" traps rather than 1 1/4'" ones.

Asktom · Jul 24, 2013

Things probably aren't lined up straight so it is binding at the union before it seals. All you can do is tighten the nut more or go back to square one.

Tom Sawyer · Jul 24, 2013

hj said:
Those are lousy traps and I NEVER use them. Tighten the nut a bit more. But I DO use 1 1/2" traps rather than 1 1/4'" ones.

So do I if the adapter or pipe in the wall is 1-1/2" look closer, it's been trap adapterd down at the wall.

hj · Jul 25, 2013

It ALL looks like 1 1/2" PVC from the wall to the drain.

Tom Sawyer · Jul 25, 2013

I made the picture bigger and it is all 1-1/2. It looked like a brass piece in a trap adapter to me.

derekb · Jul 25, 2013

It's 1 1/2 all the way through. I was just replacing what was already there with new stuff and trying to make it work. I don't do much plumbing by any stretch so would love your alls recommendations. I bought 1 1/4 traps tonight with a flex spout but don't really love the idea of using that. Thank your again for our help!

Cacher_Chick · Jul 25, 2013

It helps if you tighten the two halves of the trap before you install it to the sink, as a tiny misalignment in the joint can cause it to leak.

Hammerlane · Jul 26, 2013

derekb said:
Sorry but i thought my first attempt at this saved but clearly not. here is the picture showing the leak. View attachment 21041

As said before------Misaligned

No clue why this is leaking

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