removing a downstairs loo Drainage and wastage systems and plumbing help, advice and answers

[John Boy]

Hi
I'm considering removing a downstairs loo in order to use the space for another purpose. What should I consider when capping the soil pipe? The stack continues on upstairs and is therefore vented, can I just cap the downstairs branch pipe so it is completely sealed i.e. airtight?

Many thanks.

[bobplum]

yes you can providing you dont get any materials lodged in to the main pipe and the pipe is still vented i wouls cut out a circular peice of wood the same a s the inside diameter lodge it in and us concrete or maybe expanding foam