Broken PVC Fix Suggestion

So in the process of putting in a new vanity, I started out with
installing a mirror that is mounted on a heavy MDF board. While
putting it up, it dropped onto the drain pipe and snapped the connecting hub
fitting right behind the drywall. Does anyone have a suggestion on how to easily fix this? I'm guessing I'm going to have to cut above & below the T to remove the broken piece then replace it with a new one and join it with couplers? Would plumber's putty work in joining the broken pieces? What would you expect a reasonable quote to be to hire a pro? Thanks!

The only right way to fix that problem is going to be to open up the drywall and install a new 3 way fitting on the vent stack. The vent stack is the pipe that is going from floor to roof inside the wall. You can get yourself a couple of fernco's (rubber fittings with clamps on the ends) in order to install the new fitting. Plumber's putty will not hold up on cracked PVC fittings and over time will definitely leak and cause problems.

Thanks Leakfinder, didn't even know this product existed.

I would think part QT-300 would be the best fitting to use?
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You should open the drywall and glue a new tee in with two glue couplings. You can get the glue and Purple primer for pvc at any home inprovement store along with the fittings. I wouldn't put fernco's behind the wall.

Fansplumbing said:

You should open the drywall and glue a new tee in with two glue couplings. You can get the glue and Purple primer for pvc at any home inprovement store along with the fittings. I wouldn't put fernco's behind the wall.

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Fansplumbing makes a good point. If the line should plug and you tried to clear it with a snake there would be a good chance that the snake would punch a hole in the fernco tee.

John

If I were fixing something like this, I would pre-built a new PVC assembly with a tee and 2 unions, back to back. I would then cut off the pipe above and below the broken tee. It seems that you may have to break off a bit more of the dry wall there, but it really depends on what kinda pipe cutting tool you have and/or willing to use. I would then cut off enough of the pipe ends to put in the union ends, making sure the whole thing will fit, and close. You can get away with one union, but it's a lot easier when there are two.

A union has about 1" slip, so you would need to cut approximately 1.5" below the old tee slip. But anyway, assemble the new piece first, measure, then cut with some buffer, try with union heads, until you see that all the parts fit. It's best to have the union heads with the caps on the tee side, not on the pipes side.

Thanks,
Pawel.