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 figure by venting at the ridge I can better flash this with a roof jack to prevent water intrusion. I'm not sure this is allowed unders the UPC code. Can reventing be done at all under the UPC or must every vent have it's own roof penetration?
Thanks, Marty
Thanks, Marty