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flexytexy81 · Sep 3, 2008, 09:18 AM

Hello all,
My sister recently bouth an apt building. Im in the middle of fixing and apt that was totally trashed and not taking care of. Its on old house that was sectioned off into 4 units, anyway.. The bathroom floor was totally rotten all the way to the floor joists. I ripped up the 4 layers of planks, and 2 layers of plywood and commercial tile and replaced them. My problem is the toilt flange is no about 6-8" high. There was way too much flooring there so obvisoly didnt need to put that much back. I was reading and saw all the answers but my drain is 4" copper. I also can't get the brass flange that the toilet bolts to off. Its like it was soldderd to the pipe. Any suggestions? Any answers would help. Thank you much.
P.S. I went to lowe's for help and they all scrated there head. Yeah Pros there? Yeah right.

massplumber2008 · Sep 3, 2008, 09:25 AM

Flexytexy...

Best solution in this case will be to expose the pipe below the floor and then cut the pipe using sawzall with metal blade and then install a mission clamp (see picture) that transitions from 4" copper pipe to 4" pvc pipe. This can only be picked up at a local plumbing supply house.

Then want to purchase a 4"x3" pvc flush bushing and install that into the mission clamp. From here you will install a 4"x3" pvc closet flange and install that once the finish floor has been installed.

The 4"x3" closet flange sounds like it will be 4" but it is actually a 3" hub.. so you will need a small piece of 3" pipe (buy this at home depot) and pvc cement and primer. Be sure to dry fit (just place into hub for now) the pipe up from the 4"x3" pvc bushing and cap it until finish floor is installed. Then when finished floor installed you will remove it and place closet flange into hole and measure the length of pipe needed and then cut 3" pipe and install the flange.

And the old copper flange is soldered onto the pipe... ;)

Let me know if this made sense...

MARK

flexytexy81 · Sep 3, 2008, 09:42 AM

So pretty much just use the mission clamp and use regular, pvc flange and pipe from there? There are a lot of clamps in the house form pvc to copper under the sinks, and I fixed them by sodderin on the theaded ends and got pvcs ends. Just wondering how that clamp will hold up

ballengerb1 · Sep 3, 2008, 10:43 AM

Don't worry about that clamp. You likely have 20 other connections that will blow out long before a new clamp will fail.

flexytexy81 · Sep 3, 2008, 11:21 AM

Cool Cool Thanks very much for the help :) have a good one!

massplumber2008 · Sep 3, 2008, 12:52 PM

Hey Flexy...

Bob said it... no issues will arise as long as you order the correct mission clamp. Do not use the fernco rubber type clamps with out shield... this will fail miserably.. see picture below.

What I recommended is actually acceptable code requirement for this particular type job. So is sweating on female adapter and installing pvc male adapter... but that can be difficult if you don't have a super large torch!

Stick with the mission clamp... again, found only at local plumbing supply house... ;)

Good luck... MARK