I think I may need to put shims down. My situation is that my wife had lineoleum installed in a portion of the house and the old toilet in one of the bathrooms had to go because I discovered it had a crack. The lineoleum was installed and the toilet removed by the installer. So when I came upon this my old toilet was in bath tub and the new floor was in place. It appears the previous owner had installed this toilet without a flange, the closet bolts were just there for "show" and the toilet was caulked to the floor. When I attempt to install a flange and do it right, I find that the flange is too high and my flange screws will not seat firmly into the concrete with the plastic concrete anchors.

So my flange, which is brass, doesn't rest on the floor, and is above it, but I will need to measure it.

I must also add that I had to drill holes to install the flange, and when I drilled I could not drill to the proper depth for the screws initially recommended (2 inch), so I used a screw and anchor that fit. So my flange is too high, plus the screws and anchors I used did not seat properly to secure the flange to the floor, so my toilet wobbled. I installed it a second time with a new wax seal, but of course the flange is too high. I had glued new anchors into the holes with gorilla glue, and while that's better, it still didn't work. My flange is too high.

What can be used to "shim" the space under the flange so that it rests on a solid surface?

What kind of pipe are u trying to hook flange to?

How high is the flange above floor?

If waste line is PVC or copper can be cut to right height for flange with a multi tool or inside pipe cutter.

Flange should not be more then 1/4'' above or below finished floor.

Chuck

Can you post a pic our your situation?

I can post a pic later this pm when the wife returns with the digital camera.

A more accurate description of the work site, however, is that the area of the drain pipe is a raised surface, as it was built up to form a small hill where the drain pipe is in the slab. This is the area which prevents the flange from resting on the finished floor. The flange may be pressed down so that it is uniform in height above the floor. There appears to be a piece of black plastic, as if from a wax seal with an integral black plastic funnel, that was caulked into place, that is also sticking out from the drain pipe. All of this makes an uneven surface for the flange to rest upon.

Not really sure how to proceed. In retrospect, the floor should not have been installed until the drain pipe area was made to be a level surface so that a flange could be properly installed. The built up area under the lineoleum appears to be concrete forming the hill, so I could take a chisel and even it out, preventing it from going down the drain. It appears previous toilets were simply placed on the drain pipe area with a wax seal, and one appears to have been caulked.