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What is this??

249 views 5 replies 4 participants last post by  Plumbus  
#1 ·
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I’m in the middle of reno and I was removing a faux wall next to my vanity and it revealed this pvc pipe. What is it for?? Initially I thought a vent but it doesn’t go outside. Any thoughts??
 
#2 ·
That's a vent your gonna have to spend some money to get rid of that pony wall. Would have to relocate the vent which when you open the floor you will probably find the reason why the contractor build a plumbing pony wall and the plumber ran it there, aka a beam structure other utilities blocking the path.
Your dream of removing that pony wall just got crushed.
Also where does it go if it does not go outside? Did you check the roof?
 
#3 ·
Thanks for the insight. I’m going to have to open the wall up behind the toilet and see what’s back there. Even the water lines to the vanity are weird. Some weird layouts happening in there. Hopefully I can redirect it. I can’t imagine anything behind it’s it’s an exterior wall.
 
#6 ·
First of all, is this project being done under a permit?
The only way you'll know if you can move that pipe w/o some structural work is to open up the ceiling below (if it's on the 2nd story) or the floor between the toilet and the pony wall. I would choose the ceiling, because your access to the toilet waste and vent will probably be better. You may even have to open a wall below. That pony wall removal is getting more expensive with every word I type. Why do you want to remove the pony wall? Are you interested in making your vanity top longer? By the looks of things, the pony wall (with the vent in it) could be moved over maybe 9" to the right without getting too close to the wc. That still would require opening the ceiling or floor to shorten the vent. If you are really lucky, opening the ceiling may reveal an ability to move the vent into the wall behind the toilet and vanity below floor. Since this wasn't done in the first place, there is probably something structural, like a floor joist, in the way.
Maybe you should hire a plumber to do the thinking and the dirty work.