Is it OK to join two 2" dry vents in my attic using a 3" tee (with 2" reducers). A 3" vent pipe would then be connected to the same 3" tee and exit through the roof.
I would like to do this solution instead of cutting two separate holes in the roof for the two 2" vents to exit.
Is this according to code?

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Originally Posted by rigel

Is it ok to join two 2" dry vents in my attic using a 3" tee (with 2" reducers). A 3" vent pipe would then be connected to the same 3" tee and exit through the roof.
I would like to do this solution instead of cutting two separate holes in the roof for the two 2" vents to exit.
Is this according to code?

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It's called "revent" and is perfectly acceptable. You could revent the entire house through one 3" vent if you eished. Cheers, Tom