Vent Stack Out Wall Versus Roof?


Old 05-18-03, 02:32 PM
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Question Vent Stack Out Wall Versus Roof?

Am building a new steel home and want to avoid all perforations of the roof except the necessary ridge venting.
I'd like to bring the vent stacks for the bathroom out the side wall (the outer wall is 12 feet tall).
Any advice as to the preferred methodology to exit the outer steel wall without creating leakage problems?
Also, any suggestions as to preventing hard rains and the ever-present hordes of critters here in West Central Florida from making their homes in the pipe?
Thanks! dmc
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Old 05-18-03, 02:58 PM
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Steel? Is this corrugated steel or flat steel? If it's flat, you could just seal a regular roofing vent boot to the side with black plastic roofing cement under it to prevent it from leaking through the wall. Caulk (paintable type exterior caulk) the edges and paint the galvanized base of the boot to match the steel wall.
You need to slope the horizontal run of the stack 1/4" per linear foot back towards the main drain, so that the rain will flow down it.
Make the top of the stack high enough so that nothing but a bird can get to it.
Check with your Building Inspection Department for local plumbing code.
Good luck!
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