06:03AM | 01/06/05
Member Since: 09/26/03
11 lifetime posts
I just finished my basement and now it's time to install the toilet. I have a few questions. I know these are silly questions but I like to do things right. Please help thanks! Charles

The flange sit flat on top of the tiles.

1. Should I seal the PVC flange to the PVC pipe that was installed in the cement floor? If so, using what method, the flange has a rubber ring that screws up or down on the neck of the flange. What is the best method of attaching it to the PVC pipe?

2. What type of bolts do I use to attach the flange to the cemented floor and what is the best method of drilling and attaching the flange to the floor?

3. Do I use double wax ring or single wax ring to seal the toilet to the flange? I've been told both.


07:27AM | 01/06/05
1. You evidently have one of the newer compression flanges that go inside a drain pipe. I haven't used them but other plumbers have and they seem satisfied. I do not know if they have been approved by code. The main concern is not water leaks but sewer smell and will the gaskets weaken over time from the sewer gases.

If you have a four inch drain pipe you can install a male glue flange. If you have PVC then you will need primer and cement. Make sure the slots are lined up correctly.

2. The flange needs to be firmly anchored to the concrete under the tile. Percussion bits seem to be the best but you have to be careful not to crack the tile. I have used the arrow shaped glass bits to cut through the tile first. Some tile is super tough and drilling the holes is a problem.

The best anchors are drop ins or expanding anchors. You need to check the heads to make sure they don't stick up above the flange and hit the toilet. I use the plastic anchors with brass or stainless steel screws but others think this is too weak.

3. A single wax without the plastic insert should be adequate. It is good your flange goes on top of the finish floor. Some leave the flange low and need to cover the extra space. Some will use a double wax but the wax is not really meant to resist water pressure. Some prefer the plastic insert waxes but I and some others feel toilet paper hangs on them and results in sporatic stoppages.

4. If you haven't already gotten your toilet give it some thought and research on the best flushers. It's a disgrace that people are paying over $300.00 for toilets that don't flush the first time. It discuss's me to see so many plungers in bathrooms now. Some big name manufacturers still don't have their design down yet.
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