Help with 1 1/2 sink plumbing with leak

cammy2207 · 6 Oct 2019

Hi all.

I have a 1 1/2 kitchen wash basin. As you will see in the pic, I have a leak from the part that is circled. I have tried boss white around it but the water is coming back the way I guess. The join is not tight as the thread doesn't seem to tighten up properly around the inner pipe for some reason.

Please can someone recommend a part to solve this or another way to set it all up?

Thanks in advance

seco services · 6 Oct 2019

My first call would be check the rubber seal inside.

terryplumb · 6 Oct 2019

seco services said:
My first call would be check the rubber seal inside.

And also the seal in the fitting that's connected to the waste ,as it looks as though that's suspect also.

HERTS P&D · 6 Oct 2019

Looks like those joints have been sick.

Andy

cammy2207 · 6 Oct 2019

@terryplumb what joint exactly would that be that you find suspicious also mate? Which one is 'the waste'?

terryplumb · 6 Oct 2019

The waste fitting is the big round white thing ,immediately under the sink ,below that ,where its all brown looks as though it may be leaky.

seco services · 7 Oct 2019

The other thing is the the traps put together wrong the spill over level from trap is to high.
causing your pipework to hold water

cammy2207 · 7 Oct 2019

How could I lower the last pipe on the way out. The welded sealed one? Could I cut it and reattach it somehow making it attach to the trap lower?

Madrab · 7 Oct 2019

As @seco services mentions, the whole thing isn't quite right.

That whole horizontal section is above the level of the water seal in the trap and will never empty properly. It also looks like the waste pipework has been mixed up and the trap has been 'created' out of bits from one make and the other waste pipework from another. It's also back to front as the higher 1/2 bowl sink would usually have the adjustable height end of the pipework on it.

The way the sink has been fitted onto the cabinet is what's caused the problem by the looks of it. You may be able to get enough adjustment using a double bowl sink waste setup.

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Help with 1 1/2 sink plumbing with leak

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