I have an extension on the back of my property and at the moment, my bathroom waste goes through the skirting, through a gap between the extension and the building and then across the kitchen ceiling, through a wall and then I presume, down and out under the extension. I'm fitting a new suite and want the waste to go under the floorboards, but this means that when it goes across the kitchen ceiling to the outlet pipe, it has to go up for the last foot or so. Is there any sort of pump you can get to overcome this? I can't re-route the waste any other way.