Replacing basement toilet - what to do about flange
I'm renovating my basement bathroom. I've taken the old toilet and flooring out. I'm not sure what I need to do before putting the new toilet on. The house is about 50 years old. It appears that there was no toilet flange before. The 4" cast iron drain pipe goes right up to the cement floor. There was 1 bolt set in the concrete that was holding the old toilet on (it looks like the other bolt broke off flush with the floor long ago).
My basic plan was to cut the existing bolt off flush with the floor and use the appropriate flange considering the drain pipe is cast iron. I've done some googling and some have mentioned using a twise-and-set flange. Is this right? The inside diameter of the drain pipe is 4". Is that normal/okay?
I also have another stupid question. I'll be putting ceramic tile down. Do I put the tile down right up to the drain, then put the flange on top of the tile and then the toilet on top of that? Do I put the flange down first, then tile up to the flange and then put the toilet down?
I've attached a picture of the existing drain.
Last edited by mslide; 12-19-2009 at 11:01 AM.