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I think you might be better off to remove the cover on the overflow fitting near the top rim of the tub. It's likely held in place with a single screw. You should then be able to get your snake in...

Sorry Hj didn't mean to question your expertise, there is just alot of confusing information out there on the net.

Thanks HJ,
So I'm getting conflicting info. From another forum I got a response that says
The UPC does not allow any flat horizontal venting. The maximum angle for an offset is 45 deg. from...

Thanks for the reply. SO then I could say run my kitchen sink vent into my main stack vent? Can this be a horizontal run or does it have to tie in at a 45 deg angle?

Marty

I live in California, so we are under the UPC code. I'm plumbing a new construction and would like to tie all the vents together so they exit at one point from the roof. I have a metal roof, and...