My plumber wants to run the vent stack out the gable end of the attic wall. I'm assuming (but I have yet to ask) that it would run out and then vertically to clear the roof. The main advantage is eliminating a roof penetration which can be problematic with heavy snow pressure. I have been searching around and see people express negativity towards this setup but I haven't been able to find a concrete answer yet. Can anyone think of a reason why I should have them just go through the roof instead, as is done conventionally?
An attic wall exit would not work for some houses because it looks ugly, but in this case the pipe would be actually less visible there than exiting from the roof.
I'm thinking that too sharp of a bend after going out the wall could cause problems with freezing water, but I'm not sure how different that is from having a bend in the vent pipe in a vented attic if multiple vents are combined?
Can anyone think of a reason to have them not do this? Thanks.
An attic wall exit would not work for some houses because it looks ugly, but in this case the pipe would be actually less visible there than exiting from the roof.
I'm thinking that too sharp of a bend after going out the wall could cause problems with freezing water, but I'm not sure how different that is from having a bend in the vent pipe in a vented attic if multiple vents are combined?
Can anyone think of a reason to have them not do this? Thanks.