Venting Sink
We have a sink with no vent. It had one originally going all the way to the roof but someone disconnected it and filled the vent with tar. The sink waste line does connect to the main waste line in the house, which I presume/hope!!! has its own vent. Do we need to vent this…
We have a sink with no vent. It had one originally going all the way to the roof but someone disconnected it and filled the vent with tar.
The sink waste line does connect to the main waste line in the house, which I presume/hope!!! has its own vent.
Do we need to vent this sink, and how do we do it, who does it, and how many billions will it cost? The sink is near an outside wall.
Thanks, everyone!
When I bought my house, before I did an extensive renovation, the ground and Parlor floor duplex had a “gas” problem. The tenant complained of the smell of gas, we had the gas company in but they couldn’t find a leak. It DID really stink there sometimes but it was more of a sewer gas smell. When I finally started the renovation and did demolition, we discovered that the kitchen and bathroom sinks weren’t vented and just fixed it as part of the plumbing work we had to do. I think that it created a really unhealthy situation; sometimes I couldn’t believe how nasty that place was.
“I do mainly worry about blowing up”
unlikely. while sewer gas contains methane, you’d be driven out of the house by the smell long before it reaches explosive levels. and a kitchen drain would be soon refilled under normal kitchen use. otoh, if you go away for 2 weeks just as the trap empties…(kidding)
btw, i didn’t mean the actual sink drain size but the pipe which connects it to the rest of the plumbing.
Thanks. The sink drain is miniscule, by the way (the size of the hole, I mean).
So we’re not in danger of blowing up?
As a new owner and very nervous person, I do mainly worry about blowing up.
slow drain, gurgling, sewer gas smell (this happens when the trap empties of water due to air suction). seems like venting it “officially” will be expensive. live with it for a while and you may not have to do anything. sometimes if the sink drain is oversized, there won’t be a problem.
We don’t live there yet. What problems should we look for?
Sink is one party wall, the main stack is on the other. So about 20 feet.
It’s a kitchen sink.
And that’s exactly where it is, cmu.
Surely not, dibs, I thought provents only worked in en-suite baths?
I agree, cmu. As long as it’s draining OK let it be. I have a provent as well (sshhhhhh).