remodelingit
New Member
I am in the process of remodeling our bathroom which involves a full reconfiguration of the shower and toilet drain and vent systems. Our house is on a pier and beam foundation with 15" of crawl space.
I have several questions and have included a picture below to help articulate the scenario and my proposed solution.
Issue: The toilet will be located in the corner of the house and I want to avoid venting up either of those two walls. A copper 1 1/4" vent is already there for the lavatory and I'm leary about increasing to 2" (if that is even an acceptable size for venting a toilet and a lavatory- is it?) due to the fact that it is an exterior wall. Therefore, I am proposing to vent off the drainline vertically and then horizontally within the crawl space to an interior wall about 7 ft away. The shower would be configured similarily and will use the same vent as the toilet at the interior wall location. So, my question is whether or not this is an acceptable venting method. If it is, will a 2 " pipe size for the vent be acceptable for venting the shower and the toilet? Also, I'd like to use the existing vent hole in my roof; under my proposed scenario, could I run the vent horizontally again in the attic and then vertically exit through the roof?
Any help would be appreciated. I've read books upon books and none of them have a solution for my dilema.
I have several questions and have included a picture below to help articulate the scenario and my proposed solution.
Issue: The toilet will be located in the corner of the house and I want to avoid venting up either of those two walls. A copper 1 1/4" vent is already there for the lavatory and I'm leary about increasing to 2" (if that is even an acceptable size for venting a toilet and a lavatory- is it?) due to the fact that it is an exterior wall. Therefore, I am proposing to vent off the drainline vertically and then horizontally within the crawl space to an interior wall about 7 ft away. The shower would be configured similarily and will use the same vent as the toilet at the interior wall location. So, my question is whether or not this is an acceptable venting method. If it is, will a 2 " pipe size for the vent be acceptable for venting the shower and the toilet? Also, I'd like to use the existing vent hole in my roof; under my proposed scenario, could I run the vent horizontally again in the attic and then vertically exit through the roof?
Any help would be appreciated. I've read books upon books and none of them have a solution for my dilema.