After roughing-in the plumbing for a bathroom in my new shop, I cannot get the plumber to come finish since the floor has been poured. I am going to try to finish it myself, but I am unsure about installing the toilet flange. Right now, there is a piece of 3" pvc sticking up out of the floor about an inch above the floor. It is not glued in and I can take it out and see the elbow leading to the septic tank. Questions: I assume the pvc must be glued to the elbow, so how far, if any, should the pvc extend above the floor? Will Tap-con screws suffice for bolting the flange to the floor?

 

Get a pvc closet flange, remove the stub up and set the flange where it will mount onto the finish floor, take the measurement for the lenght of pipe you will need, inside hub to inside hub, cut this piece of pipe, your ready to glue, you have to use non corrosive screw to mount the flange to the floor.

Remember before you glue to make sure where the mounting bolts that hold the toilet to the floor are the same distance off the back wall.

Best Regards Plumber2000
www.atozplumbing.com