WC connections

Postby sturdytree » Sat Jun 12, 2010 12:15 pm

We have a WC in a bathroom in a rear single storey extension, which also has a kitchen.

The soil pipe for the WC is vertical into the bathroom floor and drains into the underground sewer chamber next to the property (which I beleive is about 2m below ground). The WC is against an external wall to the side alley where the manhole for the sewer is.

I believe the kitchen sink waste connects to the same sewer chamber (or possibly to the WC discharge pipe).

My builder has put in a new ventilation pipe (VP) which comes out of the ground in the shared alley and runs up the extension wall and bends over side door to connect to the VP attached to the main house (latter pipe is also the pipe used to discharge waste from house WC)

This new VP is very unsightly and i'm thinking what options there may be to remove it and do something else instead.

I believe the new VP cannot be shortened and capped with an air admittance valve, as latter cannot be used externally?

Could WC soil pipe be taken horizontally through wall instead and connected to this ventilation pipe (which I suppose would then become a discharge pipe) - my reading of the regulations is this may be OK if the slope is low enough. However, this would mean the kichen waste loses ventilation?

Any help much appreciated
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Sat Jun 12, 2010 12:13 pm


Simply Build It

Postby TheDoctor4 » Thu Jul 22, 2010 8:42 pm

If you would like to find a reliable, insured and vetted tradesman in your area why not click through to the Find a Tradesman area of DIY Doctor: http://www.diydoctor.org.uk/find_tradesmen/ , complete the form and receive up to 5 FREE quotes
Rank: Project Manager
Posts: 16777215
Joined: Tue Jul 24, 2007 9:12 am
Location: Somerset in the UK in Shepton mallet

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