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Unread 01-21-2008, 08:57 PM   #1
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Join Date: Jan 2008
Posts: 1
Toilet (closet) Flange problems!! Please Help!

Greetings all...

I just completed a bathroom renovation which included a new subfloor and tile installation. Everything came out pretty nice but the closet flange is sticking UP above the floor about 3/4 to 1". The pipe is 3" cast iron and very hard to get to since it is only about 1' long before it merges with the main run (think y-shape). I know they make offset flanges but would one of those work with cast iron? And if not, what are the other options without having to tear the new floor apart too badly?

Any advice would be greatly appreciated.

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Unread 01-21-2008, 09:33 PM   #2
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Join Date: Jul 2004
Location: Nashua, NH
Posts: 13,261
The cast iron flange and pipe can be cut and a new flange installed at the proper height. WOrking with cast iron, especially in tight situations is not the easiest. Is the pipe 4" or 3" interior diameter? I'm assuming it is leaded on. If it is 4", then you can probably do it yourself. If it is 3", you'll probably need to hire a plumber that still knows how to do a leaded joint.

If 4", drill the lead into swiss cheese. Pry it out, then remove the old flange. Once it is off, you'll need to cut the pipe off which can be done with a grinder and cutoff wheel. You can saw it off, but it's a bear if you don't have room. Then, you can get a flange that fits inside the pipe. Depending on the brand, some twist which expands a gasket to seal it to the pipe (wire brush it first to clean it up). Others use screws to expand the base to seal it. Then, you'll need to drill holes in the floor to insert anchors or through holes so you can screw into the subfloor to hold it all in place.
Jim DeBruycker
Not a pro, multiple Schluter Workshops (Schluterville and 2013 and 2014 at Schluter Headquarters), Mapei Training 2014, Laticrete Workshop 2014, Custom Building Products Workshop 2015, and Longtime Forum Participant.
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