Smell from kitchen sink - plumbing advice needed - photo attached

PeteTong_2

I have a bad smell coming from the half bowl sink next to the main kitchen sink.
I think it may have been plumbed in badly as it began when we had a new kitchen fitted.

Can anyone have a look at this picture and see what they think ? I think there should be some sort of trap or u-bend connected to the half bowl (on the left) as at the moment it goes straight to the drains along the diaganol pipe. The big white thing under the main sink I guess is a bottle trap as it isn't doesn't look like a u-bend and there is no smell from this plughole.

Thanks

maninthestreet

My kitchen sink has the same trap as that. Try putting dilute disinfectant down the sink to see if that kills the smell.

PeteTong_2

maninthestreet wrote: »

My kitchen sink has the same trap as that. Try putting dilute disinfectant down the sink to see if that kills the smell.

Its the sink to the left which smells, not the one with the trap. The diaganol pipe passes behind the trap.
I've tried caustic soda, bleach etc but nothing has helped.

Ebe_Scrooge

Speaking as a layman rather than a plumber :-) I would suspect that the black horizontal pipe on the right-hand side is the problem - all sorts of nasty stuff can collect there. If the pipes are push-fitted rather than solvent-welded, it should be very easy to take the whole lot apart and give it a really good scrub with bleach ( have loads of rags handy, there's going to be lots of smelly water stuck in there ! ). This will cure your immediate problem, but I suspect it will come back. I would think you need a trap of some sort coming from the left-hand sink. Either that, or it may be possible to turn the bottle trap round 180 degrees so that the left-hand sink goes straight ( diagonally ) down into it - this should mean there is nowhere for standing water to accumulate. Looking at the picture, the whole section of pipe from the lowest point up to the trap ( and the same height on the diagonal side ) is going to hold water and other nasty stuff, so that's definitely where the problem is.

Of course, I'm probably talking complete claptrap .........

Mutton_Geoff

Pete, you are quite correct, the half sink needs a trap to stop the smells coming up from the sewer. No amount of bleach is going to cure the problem but £20 on a bottle trap and new bits of pipe will get it sorted. You can just screw the new trap to the bottom of the half bowl and fit some new lengths of pipe with a 45 degree elbow into the existing off white pipe at the back (cut back to the correct length once you fit the trap to the half bowl).

maninthestreet

Standing water is supposed to accumalte, to prevent smells coming up from the drains.

wallbash

The way I see it
You have not got a trap servicing the smaller ( smelly ) sink :eek:

You can clean as often as you like, but the smell will always be there, no way to stop the smell coming up the pipe from the drain.

I would have the bottle trap lower, both sink pipes combine , then the trap , then discharging to the drain.

CKdesigner

Hi,

LOL! Basically your kitchen fitter needs shooting! If he is going to plumb in a sink like that he is a waste of air!

Is this a new sink with the kitchen? The correct waste kit should have been purchased or supplied with the sink. If it wasn't, then the fitter still shouldn't have fitted it like that.

Have you got anything else wrong with the way the kitchen has been fitted? If you haven't I would be very surprised!

Anyway, get him back to fit the proper waste kit for your sink then you will be fine.

Good luck

johnmc

You will always have a smell there.

There should be a proper trap, P, S or Bottle fitted to the outlet. This holds a permanent head of water which prevents the smell coming back up.

It's hardly rocket science and your plumber needs to come back and do it correctly. You then need to report it to Trading Standards.

PeteTong_2

CKdesigner wrote: »

Is this a new sink with the kitchen? The correct waste kit should have been purchased or supplied with the sink. If it wasn't, then the fitter still shouldn't have fitted it like that.

Yep it was a new sink and I think he used the existing pipes where he could.

CKdesigner wrote: »

Anyway, get him back to fit the proper waste kit for your sink then you will be fine.

It was a few months ago and he has now moved abroad ! I think I will get another plumber in and oversee it this time. I could even give it a go myself.

wallbash

I could even give it a go myself.

Good idea .


Ps how nice to see a photo , makes a reply so much easier

truly a picture ( photo) is worth a thousand words