removing cast iron flange

[cubgirl]

hi everybody,

i need to remove the cast iron flange and replace before re-installing subfloor. i'm attaching pictures of what i have. my question is do i remove just the flange or do i remove the entire piece that's connected to the cast iron bend? i was not prepared to find the big attachment to the bend and i'm not sure what it is.

if i can remove just the flange, what is the best way to do that without damaging the pipe? i'm thinking of cutting it off with a rockwall oscillating tool but open to any suggestions.

here's a picture of what i have. thanks in advance!
cub

 

[frodo]

cut it 2'' from the top of the hub. then go back with a 4'' cast x 4'' pvx proflex band

4''ci x 4'' pl

http://screencast.com/t/lW0eLvCiiypq




then, install a pvc closet flange, screwed to the floor with BRASS screws not sheet rock screws..they rust

the flange needs to sit on the finished floor, so if you are installing tile
the bottom of flange needs to be 1/2'' above sub floor

shim it..till you tile it, then pull shim..savy?

 

[cubgirl]

cut it 2'' from the top of the hub. then go back with a 4'' cast x 4'' pvx proflex band

4''ci x 4'' pl

http://screencast.com/t/lW0eLvCiiypq

View attachment 11562


then, install a pvc closet flange, screwed to the floor with BRASS screws not sheet rock screws..they rust

the flange needs to sit on the finished floor, so if you are installing tile
the bottom of flange needs to be 1/2'' above sub floor

shim it..till you tile it, then pull shim..savy?

hi Frodo,

thank you, yes i understand. how do you suggest cutting the cast iron? i don't want to damage the pipe. thank you!

 

[frodo]

4.5'' grinder with an abrasive cut off blade

wear heavy leather gloves, and eye protection


i did not say this...remove blade guard,

be carefull,,it will eat you like a tasty cookie

 

[Mr_David]

Here is a thread on just that topic.

plumbingforums.com - How to remove/replace a cast iron flange

 

[cubgirl]

so, i removed the old flange. it was soooooo easy. took me about 5minutes. here is what's left. the pipe looks jagged but it was like that. i'm going to get a replacement flange after i put in the floor. specifically, the white one in the pics.

thank you. your support and info gave me the courage to do this myself.

 

[phishfood]

The inside of that cast iron is to corroded and gnarly to use that type of flange on. Your best bet is to do as Frodo suggested, cutting off the 4" vertical cast with a grinder and transitioning to PVC.