@Vis-á-vis thanks for the comments. New wc is downstream of existing, so here's hoping the sewer is outside the building.

@MitchellMc thanks for the comments. If the sewer line does run down the outside of the property, hope it does, would the toilet waste be likely to go ...

@Vis-á-vis thanks for the comments. I understand the falls etc being in construction most of my life. How would the the plumber determine where the dr ...

@Jason thanks for the reply, aim of the project is to make better use of such a large bathroom that is attached to a guest room. The changes will add ...