Removing an Old PVC Toilet Flange. Others are sized so as to glue into a 3" pipe or over a 4" pipe. I do have access from the basement luckily. When removing the toilet flange, the methods used will vary depending on the type of material your flange is made from. Safely cuts the flange off the outside of a 3" pipe leaving it ready to glue a new flange on › … Ended up cracking. Was attempting to remove an old glued on (the outside of the pipe) toilet flange from a 3” ID pipe. The old flange is made of some sort of plastic and is glued right on top of the ABS pipe but it's not perfectly in line with the pipe so the opening of the 3" pipe has been enclosed slightly. For professional use only to safely remove a toilet flange Gone are the days of trying to cut and chip the old flange off, risking cracking the pipe Remove the old flange in 5 minutes with the Flange-Off. The existing toilet flange is recessed - see picture. Use the internal pipe cutter to separate the flange from the waste line by cutting at the point where they meet, which are 3 to 4 inches from the flange’s opening. If the toilet rocks back and forth when you sit on it, the flange is probably broken. The flange is glued into and existing outlet and I don’t see a way of removing it without cutting the pipe lower down and making a new outlet. If the inside of the pipe is damaged with glue--consider using the flange that glues to the outside of the pipe. Author: steve (CA) CW, fittings usually go around the outside of a pipe to prevent a restriction. You will have to buy either a 3" or 4" depending on the size of the waste pipe under the toilet. Get your internal pipe cutter and insert the small circular saw into the drill chuck. If it isn't, then you will have to cut away the old flange.If the plastic pipe has a 3-inch inside diameter, you'll have to remove the old flange from the outside of the pipe. An alternative is to cut the top of the flange and add a new flange with a smaller outlet - … Some flange assemblies are "pipe" size, so they glue into a fitting. You will either need to break the pipe by cutting into it using a dremel tool or by breaking the glue bond between the pipes. This toilet flange is designed to glue on the inside of the pipe or expand inside the pipe. Looks like I can easily cut off the elbows at the straight portion of pipe and redo it, my question is how do I “raise” the height of the pipe without doing it jackleggy? Author: hj (AZ) Since I don't even like a 3" riser to the toilets, I would really despise an internal flange. lol. Step 6 - Removing the Flange. And this is only if the flange is glued to the inside of the pipe. The metal around the flange has rusted and more than half is broken off with the foundation. Set the drill in forward gear. Re: Inside or Outside fit toilet flange on 3" pipe? 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