Dryer vent options: how to roof flash with metal panels and/or how to protect studs from heat in wall?
I’ve been unable to locate any information on what type of jack/boot to use and how to flash it for a dryer vent penetration through a corrugated metal roof. The roof does not exist yet, so it can be done at the time the panels are installed. What product and procure is recommenced for sealing this penetration and making it water tight?
Alternative routes for dryer vent are:
1. 13′ run through an interior wall. Meaning, drilling 4-1/4″ holes through the middle of every stud. About ten studs. I have concerns about pyrolysis with repeated exposure of studs to high temperature. the only way to do this would be a type of pipe or technique that was cool to the touch on the outside at all times.
2. 12′ rise, a ninety elbow, then 23′ horizontal through attic to gable exit. That’s about 40′ equivalent, and too long, I think.
So as much as everyone says “don’t do the roof”, I think the only option here is to go up, 16′ rise between studs, only drilling the double top plate. But that leaves the problem of how to terminate and flash this with a corrugated metal roof, something I can find no information on after hours of searching.
Does anyone have a boot/jack they recommend for this? Or a detail on how to use a standard jack like the DryerJack with a metal roof and make it water tight?
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