Toilet flange replacement: Cast iron versus plastic/PVC
Nov 28, 2021 Last reply: 4 years ago 3 Replies
D
Deguza
Hello all,
I hope you all had a good Thanksgiving.
As part of repairing our bathroom, I'm changing the old toilet flange made of cast iron. I wanted to keep the old flange, but a plumber friend of mine said that the 70-year-old flange may not be good anymore.
I'm not able to find the same size flange. The older flange had an ID of 4.25" and went over the OD of the cast-iron pipe.
I came across the following video on YouTube that uses different parts:
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I'm wondering about the durability of the parts used here.
Any comments?
Thanks!
Deguza
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I need to move a toilet back about a half inch. It is mounted on acast iron...
M
micky
Did he look at it. What was his complaint. Did you look at it? What did you think?
Rust, just on the surface or are parts of it missing?
Except for rust, shouldn't it last 500 years?
If your friend knew you were having trouble finding a replacement, would he amend what he said?
Yes.
I amazoned toilet flange and foudn the same thing he used, for examples,
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This rates 4.7 on 145 ratings.
Unfortunately like just about all ratings on Amazon, I do't think they consideer durability or longevity. After all, if I buy something, by the time 40 years have goen by, I'll probably forget to rate it.
Worse, I think most things aree rated that day or a couple days later.
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4.7 on 354 ratings.
I havent' read reviews but typically they talk about how easily it installs.
I didn't loko for wax ring replacement. Does anyone hear have comments on his vinyl? one?
2) He has a sharper saw than I do. Where do I get one that good and what do I ask for?
D
Deguza
Hello Micky,
I agree with you that Amazon evaluations do not tell anything about the long-term viability of a seal. (You called it "durability and longevity," in engineering we call it "reliability.") I was hoping that I would get an idea about that here in this group. Professionals may have come across older installations and may have noticed failures/successes.
Yes, I did watch the video, in fact, twice. I am assuming this is what you meant when you asked "Did you look at it?"
If you meant looking at the flange: Yes, we both looked at it. To me, it looked OK, but I am not a plumber. Being a mechanical engineer, I have some general ideas about materials, failure modes, etc. that may or may not be relevant.
I read also most of the comments under the video. Some had very useful ones.
Thanks again for your comments.
Deguza
M
micky
Yeah, I meant the flange itself.
It's a piece of metal. The only possible problems I see are being bent and having rust that is eating away metal. Why is your opinion not as good as his?
If a contractor doesn't replace something he should have, the wife will yell at him, the husband will want his money back, and both will rate him badly online, maybe harm his business. He has to be cautious. But if you do this to yourself the worst can be, In 5 years instead of
30 you have to replace the flange again.
I woudln't say this if you could find the flange.
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