Please excuse my ignorance of proper plumbing terms. I am going to rehab a full hall bath. I replaced the toilet last summer. When I removed the toilet, I noticed that the waste pipe (white plastic) only came up to the bottom of the subfloor (I think a 1/4 or a 1/2 inch). The width for the subfloor was exposed. The plastic flange was set on top of the subfloor. To be safe, I got a wax ring with some type of balck rubber extender.

Question - when I redo the bathroom, do I need to remove the subfloor and bring the plastic waste pipe up through the sub floor or is this normal? Thanks

ID918:

When you remodel the bathroom you want to set toilet piping up so that the new toilet flange will sit on TOP of the finish floor... can be vinyl floor, ceramic tile, etc...

Whatever you decide for finish floor... you want the flange to sit down on the finish floor and then want to secure the flange with screws through the floor to the subfloor for best result!

If ceramic tile, you will want to set the tile first (about 5.25" hole around the pipe) and then set the flange the next day. You will need to drill the tile to install the screws through to the subfloor. They sell a kit for this....see pic. below. It includes the 1/4" masonary drill bit and plastic anchors and metal screws.

Then just need to use a normal wax ring with horn and a pair of 5/16" johnni bolts to set the new toilet (see other pics.).

Let us know if you need more information...

MARK