Venting question on a double lav on outside wall.

[Frolly]

Any ideas for venting a vanity sink unit on this wall?

 

[Terry]

Either drop a vent down from upstairs and wiggle it past the duct there, or use an AAV under the counter.

 

[Sponsor]

 

[Frolly]

Either drop a vent down from upstairs and wiggle it past the duct there, or use an AAV under the counter.

Thanks for the speedy reply.

The lower wall is stepped out 2 feet from the upper wall, with low roof and a 6"x16" header with no route through.
Looked up the AAV and that looks the way to go.
Any tips on height etc?
Graham

 

[Frolly]

Thanks for the speedy reply.

The lower wall is stepped out 2 feet from the upper wall, with low roof and a 6"x16" header with no route through.
Looked up the AAV and that looks the way to go.
Any tips on height etc?
Graham

Just a quick thought, do I use 2 AAV's for a twin vanity?

 

[Terry]

Just a quick thought, do I use 2 AAV's for a twin vanity?

You can use two.
The AAV should be at least 4" above the trap arm and accessible for replacement and for air.