I think no to both, especially the possible part.I think when we are using the water downstairs, we’re creating a vacuum in the stack, so when the upstairs sink is on water is actually being pulled up the vent. Could this be possible or to code?
You earlier said this, which does not require water climbing against gravity.So if water’s not leaking through the boot on the roof, and all fixtures using water are below the leak, how would water be making it up that vent pipe and down the vent stack?
Their drain is my vent
Yes, that seems impossible, but there it is.but I guess the struggle I have is, how the heck could water be going up that pipe.
Reach4, thanks for the info. Great suggestions. Oddly enough when I turn the sink on I can actually see water dripping out of the pvc connection in that picture I posted which is above the drain. (The pics upside down). To your point, I think the joint was in bad shape. Looks like they used yellow/clear glue and it’s all corroded. I took your advice and sealed with some epoxy but I guess the struggle I have is, how the heck could water be going up that pipe. If there was a blockage inbetween the downstairs sink and the upstairs sink, that would mean I should have a venting issue (which I don’t) and would also mean the upstairs sink should be backing up which it’s not. I hear you loud and clear regarding gravity, but there are no other fixtures, air conditioners or any other appliances using water above that connection. I am totally certain the water is coming from that poor joint when that sink is in use. Again, please don’t think I’m being stubborn but I have to wonder if the odd wet vent setup is causing some type of positive pressure in that upstairs vent branch.
This is awkward, but...
It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.
If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.