I’m replacing a subfloor in a rehab and am wondering how much it matters how big a hole is in the floor around the flange. To fit the replacement piece over the flange I had to cut an 8″ or so hole, which of course is much bigger than the waste pipe itself.
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Replies
does the flange still have anything to screw down into and sit onto? Jeff
.......Sometimes on the toll road of life.....a handful of change is good.......
Doing subfloor in a remodel situation means that you have to either get the plumber to remove the flange (Hey, where's Wethead Warrior) or cut the subfloor in two halves to fit it closer so there is wood under the flange to use.
I think wethead and junkhound left to get ready to be contestants on 'Junkyard Wars'.Half of good living is staying out of bad situations.
If you are talking about the subfloor, the layer that rests on the joists, the layer the flange is screwed into, then the hole should be not much more than 5".
I hope you are talking about underlayment, and you have a little more play front and back, but I cut them about 7 1/4" for a 7" flange.
Well, live and learn I guess. I didn't realize the flange itself needed to be sitting on the subfloor for support - never replaced a subfloor before, or worked with a flange. I guess we'll need to tear out the piece and cut two new pieces to fit up under the flange around the pipe. Too bad I used ring shanks and adhesive! :)
As long as you're tearing it up, use PT if you've got some on site. Then the sweating stool won't re-rot it soon.Excellence is its own reward!
The drain pipe can at times have a little give in it. Just lift the flang enough to slide your subfloor under it. Be carefull if it is an old cast iron pipe as moving it alot will break the joint at the next connection.