Is it a good idea to vent a bath fan exhaust out of eyebrow roof?
I originally liked the idea of venting the bath fans out a gable end of the house in order to minimize roof penetrations on the steel roof. I did some research into venting through the main roof soffit vents, and obviously that is not a great idea due to the possibility of drawing moist air back into the roof.
However, I will be having a couple eyebrow roofs over the windows on the gable ends that seem like would be excellent spots to exhaust the bath fans. I originally intended to use non-vented soffit on these small roof sections, but perhaps I could use vented soffits here and dump the bath exhaust air into these?
Can you think of any implications or downsides to venting into / out-of an eyebrow roof?
Climate zone 5
GBA Detail Library
A collection of one thousand construction details organized by climate and house part
Replies
Adam,
If you are routing the ducts to the gable walls, why not use normal wall terminations?
Bath exhaust ducts installed in soffits in cold climates can develop icicles. I would use a regular wall termination if I were you.