Hi guys, Quick question for you. We currently have two separate rooms upstairs, one containing a WC, the other is the bathroom. We intend to move the WC INTO the bathroom, but the only place we can situate it is on the opposite wall to the outside wall where the soil pipe needs to connect. My question to you guys is how would I go about running the soil pipe to the outside wall. Ideally, I would like the pipe to double back on itself under the floorboards and pop out of the wall, totally invisible! Is this possible? Can you use smaller diameter pipe until it meets the wall? I would prefer not to use the 'boxed in around the wall' method if at all possible. Any ideas would be much appreciated, thanks.