HI
I WANT TO ADD A NEW WC TO MY PROPERTY. THE hieght AT WHICH THE PIPE WOULD GO THROUGH THE WALL AND THEN RUN AROUND TO THE EXISTING SOIL PIPE IS TOO LOW AS THERE IS A PITCHED ROOF IN THE WAY. WOULD I NEED TO RAISE THE WC( IE THE FLOOR) SO THAT I COULD GO OVER THE TOP OF THE ROOF AND JOIN THE...
