I have two vent stacks (2") that are the farthest upstream from the sewer and I'd like to combine them if possible. Having a new roof done and trying to eliminate as many breaches as possible. The vents are 6' apart. They were added by someone at a later date to the home for a washer in one room and the second for a water softener in the garage. Nothing else is attached to either. If possible I have two options;
1. Connect the two in the attic space BUT it will be difficult. The roof is low pitched, space is limited and due to the location it will require two tees and two 90s to combine them.
2. Install a AAV on the water softener vent in the garage. Easy access, easy fix but I'm always reluctant to use AAVs. Being that is a singular vent and drain seems a reasonable solution.
1. Connect the two in the attic space BUT it will be difficult. The roof is low pitched, space is limited and due to the location it will require two tees and two 90s to combine them.
2. Install a AAV on the water softener vent in the garage. Easy access, easy fix but I'm always reluctant to use AAVs. Being that is a singular vent and drain seems a reasonable solution.