Travis45
New Member
Hi everyone,
I am looking to convert a single sink to a double, and need some advice after opening up the wall to assess the situation. Turns out there is a 2" vent right in the way of where I want to run the left sink drain. My plan now is to reroute it with 90s (or 45s to ensure it could drain rainwater) , to the left in between the next studs.
My main question is, is it acceptable to reduce this 2" to a 1 1/2", just for the reroute section or does that violate code? The reason for the reduction is because there is also a stud pair clocked 90° to the left of the next stud and there is not much room for the vent reroute. I will have to notch out that stud a bit, but it does not appear load bearing, but just a "frame" around a furnace vent, goes just up to the ceiling and not to the roof.
Also, can the drain on the left be installed without an upper portion venting up and tieing in to the main vent? In other words, just tieing into the original vent section?
I've attached a photo to show the layout, and a sketch to show what I'm thinking as an option (note" the blue tape shows where the 1.5" vent ties into the 2"vent) . I'd really like to get some feedback, as I have done some minor plumbing diy but nothing like this (yet). Had a plumber come and quote me $6k for this, just roughed in. That is well out of my budget, so either I tackle this myself OR I just buy a new single vanity and try to sell/return the double I already have sitting in the garage....
Note: This is an upstairs bathroom, nothing above it. I beleive the 2" vent connects to the half bath on first floor.
Thanks!
I am looking to convert a single sink to a double, and need some advice after opening up the wall to assess the situation. Turns out there is a 2" vent right in the way of where I want to run the left sink drain. My plan now is to reroute it with 90s (or 45s to ensure it could drain rainwater) , to the left in between the next studs.
My main question is, is it acceptable to reduce this 2" to a 1 1/2", just for the reroute section or does that violate code? The reason for the reduction is because there is also a stud pair clocked 90° to the left of the next stud and there is not much room for the vent reroute. I will have to notch out that stud a bit, but it does not appear load bearing, but just a "frame" around a furnace vent, goes just up to the ceiling and not to the roof.
Also, can the drain on the left be installed without an upper portion venting up and tieing in to the main vent? In other words, just tieing into the original vent section?
I've attached a photo to show the layout, and a sketch to show what I'm thinking as an option (note" the blue tape shows where the 1.5" vent ties into the 2"vent) . I'd really like to get some feedback, as I have done some minor plumbing diy but nothing like this (yet). Had a plumber come and quote me $6k for this, just roughed in. That is well out of my budget, so either I tackle this myself OR I just buy a new single vanity and try to sell/return the double I already have sitting in the garage....
Note: This is an upstairs bathroom, nothing above it. I beleive the 2" vent connects to the half bath on first floor.
Thanks!
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