# How far from a window can a vent stack be? UPC Code

Discussion in 'UPC Plumbing Code Questions' started by Antonio4791, Jul 26, 2010.

1. ### Antonio4791New Member

Joined:
Jul 26, 2010
Location:
Hi all,

I am new here. Hope someone here can answer my question. I am constructing a bathroom within the existing footprint of my home. I am wondering how far from a window a vent stack can be. There is a window nearly directly below where I want to vent. The vent will of course be above the roof, but I need to know how far from the edge of the house it can be. The reason I am concerned is that I have a clay tile roof, which is nearly impossible to walk on. I would like to be install the flashing for the vent by standing on a ladder leaned against the house. But if I get too far away from the roof's edge I cannot do this. Do any codes in California prohibit me from having a vent poke through the roof, say 2-3 feet from the edge of my roof? My city uses California code and doesn't have extra rules.

2. ### Doherty PlumbingJourneyman & Gas Fitter

Joined:
Jun 22, 2009
Occupation:
Red Seal Journeyman Plumber & Licensed Gas Fitter
Location:
Penticton, BC
Someone from your area will probably chime in soon but in most cases you need to be 3' away.

4. ### Antonio4791New Member

Joined:
Jul 26, 2010
Location:
Thanks Doherty, 3 feet shouldn't be a problem. Hopefully there is someone from California out there who can verify.

5. ### hjModerator & Master PlumberStaff Member

Joined:
Aug 31, 2004
Occupation:
Plumber
Location:
Cave Creek, Arizona
There should be no reason why you cannot exit directly above/through the wall, which would place it the distance of the eave from the edge.

6. ### jimboPlumber

Joined:
Aug 31, 2004
Location:
San Diego
906.1 Vent shal terminate not less than 6" above the roof nor less than 1 foot from any vertical surface.

I interpret "vertical surface" meaning such surface rising above the roof, not the edge of the roof. Never had the occasion, so I don't know if that interpretation is correct.

906.2 Vent shall terminate.....at least 3 feet above any operable door or window.