
The toilets floor flange should be set so as to be slightly higher than the finished floor. The bolts themselves are plenty high, I can screw them down with no problem.

It doesn't seem to require any particular height of the flange from the floor (which makes sense when I see the picture). How could I tell if the height of the flange is the problem?Įdit: My toilet is an American Standard Cadet 3, with the elongated bowl here are the installation instructions. I did see this question, and wonder if that is a possible solution. Short of replacing the floor, which we could do but would obviously be a rather large and expensive project, is there a better solution that will last longer? We likely will replace the floor within about 2-3 years, but at the moment would prefer to put that off if there is a good solution (we have a couple of toddlers who are potty trained/potty training and losing access to the first floor bathroom for weeks would put a crimp in that). We suspect it is because we can't get the toilet to sit perfectly still - even with shims, the toilet still moves a small amount over time.

The toilet leaks around the O-Ring about every four to six months we've replaced it 5 or 6 times since we moved in (3 years ago). However, looking at the toilet's drain lets us see it.

In particular, the floor was probably just wood under tile (ie, no vapor barrier), though we haven't de-tiled to verify. We have a toilet in a spare bathroom which was added onto the house (converted from a pantry, we suspect) by the previous owners, and not really done very well.
