Plumbers?

thank you for the advise guys

while the sanigrinder thing is a cool idea, I don't have room for it.

looks like I'll be knocking out some plaster or boxing in a pipe, maybe I'll run it outside the house, and well insulate it so my poo won't freeze!

Its a tight space, and a pain to go all the way down stairs to do business in the middle of the night.


Actually come to think of it, the chimney has plenty of space in it, and runs close to where I want to put the 2nd bathroom. Its a faux chimney as the flu is a prefab unit inside a decorative housing.

Does the vent that goes through the roof have to be 3" also?