I would ask your county building code department on the required height. If there were no minimum, what height would you use then? Most of PA uses the unmodified 2018 IPC, but the unmodified 2018 IPC is silent on that.
Maybe look at other roofs, including new construction, and those might give you a good indication. If your vent is going to be on the side of the roof not visible from the street, then your concern about what it looks like should be less significant. Regular PVC should be protected against sun. Latex paint is one way. I might use 2 inch gray schedule 80 plastic conduit. I think it is treated for UV.
https://ecode360.com/32022076 says 12 inches for Township of Warrington, PA.
you need to connect your 2 inch vent to a 3 inch not 2 2 inch vents and then increase to 3 inch and out roof.
I figure if he can do the plumbing he dosent need a roofer to install a flashing
I think your vent cross section needs to be equal or exceed the 3 inch 2 2 inch vents I dont think would passYeah. My plan is to take my new vent that is now in a closet @ 2", poke that through the ceiling into the attic and at the entry in the attic upsize to 3". Then the vent coming from the 3" waste stack, I will drop that the 2" a few inches above the bathroom floor and run it about 6ft up the wall and maybe 7feet through the attic @ 2" and pick up the 3" pipe. Is this OK?
I will have a roofer be doing everything outside. I am shooting to get everything done this weekend, so I can get my new roof. He will work with me. I will be in the attic attaching the pipes and he will put the collars on and get the roof installed.
Well I think Im getting technical on the code but youve got 2 2 inch vents that you are artificialy incresing to 3 inch rather than bringing sufficient cross sectional; venting off the 3 inch main . I hope this makes sence it would be like having a single 1 1/2" vent and then just increasing it to 3 inch that wouldnt fly
I follow you but you are actually choking that 3 inch down and then increasing it elsewhere , I know Im nit picking but I think thats the intent of the code As reach 4 mentioned might be a differance in the codeSo, if I keep the 3"coming off the toilet and join them into the one 3" in the attic would that be ok? So in my little picture, the pipe would be 3" up the wall and through the attic from the bathroom and the closet vent would remain the same (2" upsized in the attic).
For the 3" from the bathroom, that would not be choked down. The only transition to 2" would be where it enters the closet. I think my 2" branch can support what is on it, and the 3" can support everything?I follow you but you are actually choking that 3 inch down and then increasing it elsewhere , I know Im nit picking but I think thats the intent of the code As reach 4 mentioned might be a differance in the code
Your way of plumbing it is the same as running 2 2 inch vents through the roof ( not enough),
truth is itll breath ok just not meeting code I could be off but no one else chimming in , I admit its a little nit picky
strapping it should be ok at the top plate it shouldnt expand contract or leak since its air . sometimes you gouge out the drywalll at where the hub of fitting is so the drywall will go flush
This is awkward, but...
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