Cast iron toilet flange questions?

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Old 02-06-17, 01:13 PM
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Cast iron toilet flange questions?

i need to rip up 1/2 ply to put a new floor down. The cast iron flange is sitting above the plywood. after looking a few youtube videos it looks like that flange can be remove. i believe its connect by lead? any suggestions on best way to remove it? and do i actually have to remove it? not sure how to get the plywood out if i don't. thanks for any suggestions.


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Old 02-06-17, 01:28 PM
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You don't want to mess with the flange unless it's physically broken.
If you try to unbend the lead it will crumble off.

You'll have to carefully cut and remove the plywood around the flange.

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Old 02-06-17, 01:30 PM
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This may give you some useful information.

https://www.youtube.com/watch?v=PnXezZt6OMk
 
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Old 02-06-17, 01:44 PM
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Although that is a good video..... it doesn't cover a leaded flange.
 
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Old 02-06-17, 02:40 PM
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You don't have to cut out the plywood under the flange. Just cut a square around it, leaving about an inch on all sides. If you replace it with the same size plywood, it won't matter. If you replace it with 3/4" Advantech, it won't matter, because it will be below the plywood line and your toilet will still sit on it. If you are adding cbu and tile, you will need to install riser rings to accommodate the height.
 
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Old 02-06-17, 03:18 PM
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Access from below?
If so I'd be snapping off the pipe below the floor with a chain cutter, install new subflooring then a new flange with a hubless connector.
First warning sign I see is black cut back adhesive which is a red flag for asbestos.
Second is only a 1/2" subfloor which was a really bad idea in the 70's.
 
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Old 02-06-17, 03:37 PM
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i'm installing 2 1/4" hardwood . i'm not sure how thick it is. thanks for your feedback
 
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