DIY Doctor

Smelly Kitchen Sink Drain

Postby Badger35 » Tue Mar 10, 2020 12:50 pm

We had a new kitchen fitted four years ago. The sink is a double drainer (small and larger sink), and the dishwasher and washing machine are plumbed into the same waste pipe below the sink, which has caused a gurgling sound ever since (a reliable plumber told us that the way it has been plumbed is the cause of the gurgling).

Recently, there has been a really bad smell (like rotten cabbage) coming from the kitchen sink drain, so we used this as an opportunity to take all of the plumbing apart underneath the kitchen sink to clean it and fit an anti-syphon trap, hoping that this would fix the gurgling and the smell.

When we took the plumbing apart, the pipes were all reasonably clean and there was plenty of water in the U-bend, which was not what we were expecting to find, given the bad smell.

Now the anti-syphon trap has been fitted, there is no more gurgling; however, the bad smell it still happening!

For reference, there are no pipes or drains on the outside of the property.

Any ideas what is causing the smell please and how we can fix it?
Rank: Labourer
Progress to next rank:
Posts: 4
Joined: Tue Jun 26, 2018 1:15 pm


Simply Build It

Postby TS45 » Mon Jul 27, 2020 10:22 am

Hi there I to have a smell from under my sink and have been advised it is my washing machine drain hose that connects to my sink area. I too am no expert but from what I have experienced it could be related to the positioning of the drain hose to prevent waste water seeping's worth exploring...
Rank: Apprentice
Progress to next rank:
Posts: 8
Joined: Mon Sep 25, 2017 2:20 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics