3.5" toilet drain in basement

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Old 01-15-20, 02:26 PM
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3.5" toilet drain in basement

I think this is a lead pipe drain, it measures 3.5" ID. This is in my basement. I guess it's possible another pipe is in the original, but I'm not sure. The flange wasn't attached to anything when I pulled it off. Can anyone recommend on what I should do for the replacement flange?

Thanks!
 
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Old 01-15-20, 03:15 PM
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Something similar to this should work.

https://www.homedepot.com/p/PVC-Twis...6542/203944835

Use a hammer drill, 5/32" bit and bugle head #3 phillips 1/4" x 1 1/4" or 1 3/4" tapcons to fasten it to the floor.
 
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Old 01-15-20, 04:49 PM
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Here is a better link. This product would likely work better.

https://www.homedepot.com/p/Oatey-4-...3539/100139480

If those don't fit in the pipe, you might need to get a flange like this and braze some lead in, sealing it to the existing lead, then you slip the brass ring over and tap it down onto the brass and braze it onto the brass ring.

Will you be planning on putting any flooring down?
 
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Old 01-15-20, 05:22 PM
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Thanks for the replies! Yes, I will be putting tile down. So I will need to do that first.
 
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Old 01-15-20, 05:26 PM
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Actually, if you use the pvc ones I would probably tile around the flange. If you use the brass one, it could set on the tile. Be sure you get the tile perfectly flat where the edges of the toilet will be sitting.

Depends on the toilet though... some are more finicky than others when it comes to flange height.
 
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Old 01-15-20, 05:33 PM
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If 4" won't work, would something like this suffice? It's 3 inches.

https://www.menards.com/main/plumbin...6526593199.htm

Thanks!
 
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Old 01-15-20, 05:42 PM
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I think this is a lead pipe drain, it measures 3.5" ID.
That looks to me like 4" cast iron pipe. I have one in a basement that looks just like that one.
 
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Old 01-15-20, 05:48 PM
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would something like this suffice? It's 3 inches.
No, that's meant to seal inside 4" pvc. 3" pvc is already 3.5" od.
 
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Old 01-16-20, 06:43 AM
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I would prefer it to be but the reason I was guessing it was lead was because my upstairs bathroom one is lead.
 
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Old 01-16-20, 10:46 AM
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It would have to be very old to be lead, maybe 100 or more years old. You can see better than we can, maybe it is lead. Have you checked it with a magnet?
 
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