Hello everyone!!

I am in the process of getting solar panels installed on my entire roof. In order to do this I will need to move all of my vents. I am sidewall venting my range hood and soffit venting my bathroom fan, and I would like to sidewall vent my one 4" DWV stack. I have no problem running it to a point more than two feet above the nearest window, my one idea is to run up along the eave and elbow around to the roof. I have a cape cod with a finished 2nd floor so I do not easily have access between the kneewall area and the "attic". Even if I can get a 4" pipe up to the peak I would still likely have to go through the sidewall. Is there any issues anyone can see with my thoughts? My other thought was a Studor but I know they are frownwed upon. The other vent I should have room to come through the roof alongside the array. I do have a call in to my plumber to probably get him to do it as I dont really have the equipment to do it, but I want to have opinions from other experts and you guys have never steered me wrong before

Chris

call your local inspector to see what he/she will allow.

The job is 90% routing a pipe. It would be pretty tough for a plumber to give you specific, useful information based on what you provided. In order to get more specifics, it would be helpful to post photos and diagrams.

Or, get a local plumber in there who can see what you've got, and as already noted, find out exactly what the local inspector will allow.

Also consider whether removing some finishing in a rafter space would be a decent alternative, to get from the knee wall to the attic cavity. No homeowner likes to rip out drywall when there's another good way, but if it helps avoid a long pipe run, it may be more cost-effective and better-looking in the end.

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Links to the State of Wisconsin Plumbing Code:
[docs.legis.wisconsin.gov]
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I am not a plumber.
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Thank you both! I actually am considering trying to get a pipe from the kneewall to the attic. An old friend has owned a plumbing and mechanical business for over 20 years but is so busy right now that he cant come out, but if
I can get the hard work done then he will finish it. As for our inspector, I plan to ask him, he works with me as I am in permitting in our local government office. I was really just wondering if there was a downside to wall venting. Oh, and I saw I hit 4 for pipe size, I meant 3"



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