: Thanks, edj. I see your point about the optimal
: way of doing it: new flange and get new concrete
: in position to anchor a new flange down.
: I am also interested in your "band-aid" approach.
: The current flange isn't in that bad of shape
: except for that slight crack in the PVC. I figure
: if I could glue that crack then the flange would
: be solid again -- or at least solid enough.
: : : I have an offset toilet flange made of PVC with a
: : : blue painted steel flange ring. I have slightly
: : : cracked the PVC near the metal flange in an attempt to
: : : cure a rocking toilet. This was done by tightening
: : : the nut down too much.
: : : I tried a flange replacement that slips over the whole
: : : original flange and will bolt to the concrete just fine,
: : : but the toilet won't fit over the new replacement
: : : flange.
: : : I assume the whole original flange can't be replaced
: : : right? The PVC is glued to the original discharge pipe.
: : : I assume that once PVC is glued, it's glued.
: : : Can I try to glue the crack? Could I neatly cut the
: : : top part of the PVC flange with a Dremel tool? Then
: : : clean, primer, and glue the PVC back? Would it hold?
: : : Then metal ring is fine. Just when I snug the nut down
: : : the crack in the PVC near the flange opens up, once
: : : again leading to a rocking toilet.
: : : Note that the original flange is not bolted to the
: : : slab foundation, just the PVC pipe. Also note that
: : : any attempt to bolt the flange down won't work as to
: : : get the offset, quite a bit of foundation was chipped
: : : away -- enough that there isn't much material under
: : : the metal flange lip.
: : Unless you can secure the flange solidly I don't think you'll be able to solve your rocking toilet problem. Is it possible to pour new concrete around the flange.What I would do myself would be to break the floor around the flange,dig out enough dirt to undermine the concrete. I would put toggle bolts in the holes of the flange,screw the wings on the bolts,the bolts will provide a good solid anchor for the flange. Mix the concrete and leave it rather runny,fill the entire hole and allow it to set properly. Being a plumber I would cut the pvc from the inside of the pipe with a cutting wheel, glue a coupling and new flange on.I could tell you how I would "bandaid" the old flange if you're interested.
I'm assuming the old flange is broken at the slots for the bolts.You may have to put the toilet bolt in the slot first.Then try gluing the crack,and use a round headed bolt through the slot, fasten a nut and washer under the flange
use a 2" or so bolt and screw another toggle wing to the bottom of the bolt for an anchor.This should stop the crack from seperating after the concrete hardens however you won't be able to get the toilet bolt out again. Ihope this makes sense.Feel free to ask