we are having our very small bathroom gutted and replaced. As part of this we are moving the toilet, from the outside wall, to the adjacent wall.
as we have a cast iron soil stack, our plumber isn't keen on cutting a new hole into it for the new waste pipe, so has suggested an internal pipe with an air filter. This will be boxed in within the bathroom.
Is this a suitable option? We live in a bungalow so I can't see it being a massive job to replace current soil stack with a plastic one.
Our plumber knows we are on a budget but I'd prefer to spend a bit more than have a stinky bathroom!
I'm aware this interesting question may go unanswered! I have googled but can't find an answer I understand.