Ask Experts Questions for FREE Help !
Ask
    gearmo's Avatar
    gearmo Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Jul 3, 2007, 09:30 PM
    Offset cast iron toilet flange
    I am remodeling an early seventies ranch built on slab. One bathroom has an offset flange of cast iron. There is only one t-bolt slot, located on the offset side. There is no place for a t-bolt on the 'close' side.

    The flange does not appear to be damaged, although there was a lot of rust that I have mostly removed.

    There is evidence of long term seepage from under the toilet, likely due to improper sealing. I would like to install the toilet securely.

    I have a steel repair flange that I can install with Tapcon screws, but it does not really allow for use of a t-bolt on the 'close' side, due to interference with the original flange, leaving me with the same problem.

    The original flange is a composite of cast iron (or very heavy steel) mated to PVC, which is then solvent welded to PVC drain pipe buried in the slab. Difficult and expensive to replace.

    Any suggestions?
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Jul 8, 2007, 03:58 PM
    "The original flange is a composite of cast iron (or very heavy steel) mated to PVC, which is then solvent welded to PVC drain pipe buried in the slab. Difficult and expensive to replace. Any suggestions?"

    Yes, if a flange repair kit doesn't work why not remove the cast iron flange and replace it with a PVC one? How is the cast iron flange attached to the PVC raiser? Regards, Tom
    gearmo's Avatar
    gearmo Posts: 2, Reputation: 1
    New Member
    		  
    #3

    Jul 8, 2007, 10:51 PM
    The cast iron ring is (somehow) mated to a PVC offset adapter that is solvent welded (glued) to the riser. Only the cast iron ring is above grade. All PVC components are set within the slab. The iron ring does not seem to be an "add-on", but an integral part of the adapter. There are no bolts, screws, or clamps that can be removed. I am very leery of disturbing the existing iron ring, as I do not want to be forced to dig into the slab.
    With all tile (asphalt) removed (bare slab), the bowl rocks slightly when set on the ring. There is no clearance for any sort of adapter, so I am going to glue down new linoleum, set the bowl with a lot of caulk, and depend upon the one flange bolt to locate the bowl. There seems nothing else to do unless I invest considerable expense and effort. I could drill and tap the flange, I'll have to think more about that.
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #4

    Jul 9, 2007, 08:11 AM
    OK! So the flange's a tad high. Get some plastic shims from the hardware store and shim the bowl. Good luck, Tom
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Offset Closet Flange for Cast Iron? [ 6 Answers ]

Hi, My cast iron waste pipe centerline is 11 inches from the finished wall. It worked with my old toilet (since disposed of) but won't work for my new Kohler. Is there an offset for cast iron that is easy to install? BTW, the floor was tiled and the old closet flange had an extra flange as a...

Cast iron toilet flange the bolt holes will not hold how do we fix it and the flange [ 1 Answers ]

We have a cast iron flange and the bolt holes are not useable can we cut off the top and add a new plastic flange

Cast Iron Toilet Flange [ 2 Answers ]

I am replacing my toilet and found that the cast iron toilet flange is broken where one of the bolts that hold the toilet should go. This was a crescent shaped slot, but the outer rim is broken and missing. I was going to replace the flange, but can't see how it is fastened to the drain pipe. ...

Rotating Toilet 90 degrees on Cast Iron Flange [ 1 Answers ]

I am remodeling a bathroom in a 60s vintage home with adequated crawl space. I need to rotate the toilet flange 90 degrees to install the new toilet as the orientation has changed with the remodel. The materials of construction for plumbing is cast iron. I am keeping the same elevation of floor....

Cast Iron Toilet Flange Problems [ 3 Answers ]

Hi, I have read forums on having the cast iron toilet flange being too high after tile removal. I have some additional questions on this: 1. After removing the Thick set Mortar, the flange is 1 " above the subfloor. Can I just add different types of underlayment to reach the flange (i.e....

View more questions Search