I intend installing an en-suite in a bedroom.

Waste from new toilet will go straight through & down the wall then
underground to meet the waste pipe from the existing toilet.

Question is, do I need a new stack for new soil pipe or will existing stack
serve both old & new toilets?

cheers

Andy

you will need to vent this new waste ,or you could cause your self some
problems,a new stack though may not be needed with modern vent systems

"Alex" wrote in message
...
you will need to vent this new waste ,or you could cause your self some
problems,a new stack though may not be needed with modern vent systems


Thanks for the reply.

So how would I go about it then?

Andy.