Sluggo
Member
I'm running a 2" vent for a new shower and sink. It's taken three 90 degree bends (all are more than 6" above the flood elevation of the sink) to get to where I need to go up through the roof. However, I encountered another obstruction and need to offset one more time. I can do this either with two more 90's or with two 45's. I've seen conflicting info on the web about turns in venting with some places saying that you are limited to the equivalent of four 90's and others saying there is no such limit. I'm in the Seattle area. Advice please?