I want to vent the bathroom through a roof vent. I live in central Ohio and we occasionally can get fairly deep snow on the roof so I am planning on installing an insulated plastic or fiberglass pipe with cap. Even with the insulation I am concerned about condensation dripping down into the fan and ceiling. I have a 3/12 roof so the vent won’t be very long.
All material/installation suggestions appreciated.
TIA – Dave
Replies
Dave,
I assume that you are talking about venting the outlet of an exhaust fan? If that is the case, I would recommend a "roof jack", intended for just that purpose.
Tim
Yes, I am talking about venting a bathroom exhaust fan.
I sm not sure what a roof jack is. Is that a vent flush to the roof or a pipe. What effect does snow have on the vent? This winter we had 6" to foot of snow on the roof for better than a month. If it is a pipe type vent, what type of cap have you had success with?
Thanks for the response!
A roof jack is a covered vent termination with a backdraft damper integral to it. It is installed with a flange flashed under the shingles. 6" of snow should not be a problem. They are used commonly in northern IL. The snow will not block the exit and when the exhaust is used, a small amount of snow will melt away. I do not know what would happen if you had drifts over 2 feet.
use a soffit vent . I have used these for a number of years and never had a call back, snow dosent blow in & the dont flap in the wind or leak around the flashing.
Venting that way allows moisture to go right back into the attic through the soffit vents. You sure don't need the extra moisture in the attic.I'm not just a gardener, I'm a Plant Manager.
soffit vents may be a roblem in Illinois but the havent been here in eastern ontario. any homes I work on I have been working on for a number of years (3-30) so I get to see the results on anything I install . this area is fairly dry in summer and quite cold in winter. Having used roof vents before I seen problems with snow in vent pipe melting .
what is a roof jack?
We have a 3/12 truss roof so I don't have very good access to the soffit. So I would prefer a pipe vent. You said that you have had experience with melting snow in pipe vents, what type of cap did the vents have? Could the leaking have been from condensation?
Thanks for the response!