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Old 11-23-2009, 06:09 PM   #1
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Cast Iron Pipe


Hi there. I have cast iron pipes in my home and am considering changing out to PVC while I am working on a bathroom reno. Does anyone have any advice on whether or not I should bother?
Also, I removed the flange that holds the bolts on the floor for my toilet. It is metal and meets with a cast iron piece. The top of the cast iron pipe is fairly malleable and folds over the flange when installed. The portion that is malleable is attached to the cast iron drain. It seems to be damaged and coming off the pipe in places.
Do I need to worry about this? Can it be molded over a new flange and then filled in with the wax ring stuff?
Thanks.
Catherine

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Old 11-24-2009, 06:10 AM   #2
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Cast Iron Pipe


PVC is easy to work with and cheap, but very noisey in walls close to other living spaces. I would stick with iron, good for about 100 yrs. There are PVC flanges that work in iron.

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Old 11-24-2009, 09:09 AM   #3
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Cast Iron Pipe


Cast iron does not "fold" over the top of the flange. You have cast iron pipe with a lead bend for the toilet drain. I would change out only the area of cast iron where the lead connects. You will probably need to install a new tee. Cast iron is much quieter than PVC.
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Old 11-25-2009, 04:40 PM   #4
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Cast Iron Pipe


Thanks very much for the replies. I knew the cast iron wasn't bending but couldn't figure out what was attached at the top of the pipe. It's all knew to me.
I think I'll stick with the cast iron for now.
catherine
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Old 11-25-2009, 06:49 PM   #5
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Cast Iron Pipe


They make a toilet flange for just your situation. It is the cat's meow as they say it. You insert it into the cast iron and then as you tighten up the screws a piece of flexible rubber compresses and seals up tightly. You should be able to find it at a plumbing supply store.
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