Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

I used two wax seals to set my toilet since the flange is 1/4" below the new tile. At first it seemed to be water tight but after a few flushes I noticed water seeping and pulled it out. As can be seen in the photo, the wax ring slid off center. I couldn't use just one ring since it protrudes about 1/4" below the toilet so that would just barely touch the flange. I found the flange extender in another post and will try that. One of these

So to my question. Is this the correct approach? Should the flange be level with the floor prior to installation?

Edit: The correct height of the flange is sitting on top of the finished floor. Of course with a remodel this is almost never going to be the case after tiling. There seem to be various methods to raise the flange. Many say the double wax ring is problematic since it can collapse into the drain over time. This link discusses a number of products to solve the problem. In summary, the set-rite (~18 + shipping) is the most expensive and apparently the only code approved product. The cheapest option is flange extenders ~$3-5. The funny thing is neither the tiler or the plumber that worked on my bathroom mentioned anything about the height problem, which leads me to believe the common solution is the double wax ring.

enter image description here

share|improve this question
    
    
I saw that but what was not answered is "should the floor be level with the flange". After digging around elsewhere I found that the flange should sit on top of the finished floor. –  Andrew Jun 8 '13 at 12:56
add comment

4 Answers

up vote 2 down vote accepted

The flange should sit on top of the finished floor, if it doesn't you'll have to modify the plumbing or find another way to achieve this.

Proper toilet flange

Notice in this image how the toilet waste pipe sits just inside the flange opening, this is the proper way for a toilet to sit on a flange. Even without a wax ring, this union is not likely to leak under normal circumstances (I'm not recommending a wax ring not be used).

Wax as a waste pipe?

Some folks recommend using a thicker wax ring, or even doubling up wax rings. The problem with this, is that you end up with a waste pipe made from wax. Now this might hold up, but more than likely it's eventually going to fail, and leak.

Modify the plumbing

If you have access to the flange from below, you might be able to modify the plumbing to make the flange sit atop the floor. In most cases, however, this is not an option.

Adapters

There are adapters available, that solve this exact problem. The Set-Rite Toilet Flange Extender Kit; described in the answers to this question, Comes with different size spacers, which allows it to compensate for various sized offsets.

share|improve this answer
    
Great info. I bought two Oatey flange extenders 1/4" each, to get 1/2". I'll use silicone adhesive to join the two and wax between the extender and current flange. I got stainless steel screws to attach. The set-rite looks nice but it's not stocked anywhere local and I feel that a water/gas tight solution can be achieved with my method for $8 vs spending $25 and waiting a week for delivery. –  Andrew Jun 11 '13 at 15:56
add comment

I was 1/2" below where it should have been so I used two flange extenders to get the flange 1/4" above the finished floor. They are siliconed together and wax is the seal between the original flange and extender. Although many seem to recommend silicone, it would have been too much work to get off all the old wax so I used a few gobs of new wax.

I did the same for another bathroom but only needed one flange extender. That flange was not level so I ended up with nylon washers and copious amounts of silicone to seal and level

enter image description here

share|improve this answer
add comment

+1 for using Ditra under tile. You can use either plastic or the metal ring (I prefer the metal for a bit more holding power with the 'T' bolts).

It doesn't look like the toilet fully seated in the wax. Is the floor flat front to back?

Be sure to PUSH the toilet down, with a slight (very slight) twist.

share|improve this answer
    
It's essentially flat. perhaps off level by a bit but the wax should accomodate that. I think it slid when placed. It's hard to guide it down perfectly vertical. I'll try a flange extender –  Andrew Jun 7 '13 at 19:37
add comment

If you use two rings it will eventually leak. You need one thick wax ring. This one or Oatey's version can cover a 1/4 inch.

share|improve this answer
    
I'm using the oately XL ring. The problem is when the ring is placed on the toilet, it only extends 1/4" beyond the base of the toilet. This is the same distance between the floor and flange, so it will never seal properly. It will just touch at best. BTW, this is a kohler cimarron, so not a cheap toilet. –  Andrew Jun 7 '13 at 19:34
    
The one with the flange built in should give you that room. 1/4 inch isn't bad at all I have gone to over 1/2 inch with a ring like this. –  DMoore Jun 8 '13 at 4:15
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.