[jbk]

My two bathroom exhaust fans vent through an "under-eave vent" (sample image below). The two ducts come right to the wire mesh screen, and there is some evidence of mold, but not a lot. Is there an easy fix? I don't want to put them through the roof -- seems like a lot of work (for me to do DIY), and I might do that when I get a new roof in about five years. There is no gable. I am in Oregon, where relative humidity is high year-round, but temps don't go below freezing all that often.

I saw a retrofit vent that directs air out and around the eave, but they are for soffit vents pointing downward. My eaves have no soffit, and the vent screen is facing outward, not downward. One handyman I talked to said just redirect the vent to the attic vent (which opens upward and has a temperature-controlled fan), but I don't see anyone else online recommending that. I wonder if the humidity might damage the attic fan in the long run. Thanks in advance for any ideas.

 

[Bud9051]

Condensation does not require temps to go below freezing.
If the two fans are close enough to each other then you might be able to duct both to one roof vent. That would make roof venting half as painful.
As for roof venting it is not that high of a risk and in your situation a much better option than attempting to vent as shown. Important to get that warm moist air out away from any return to the attic.

best
Bud

 

[SW Dweller]

Look on the web for eve vents. There are at least 10 produced. How they will work together in the same bay I have no experence with that condition.

 

[jbk]

Look on the web for eve vents. There are at least 10 produced. How they will work together in the same bay I have no experence with that condition.

Thanks but all I see are soffit vents... where the attachment is facing downward. My eave vent face out from the building, i.e., horizontal.

 

[lenaitch]

Not ideal - certainly not visually - but you could bring ducting out to or near the facia and just down turn with an elbow.

Do not vent into the attic space.

 

[Jim Port]

The fans should vent to the outside, not into the attic.

 

[runagate]

extend them some 12 inches from home

 

[a&b home]

Condensation does not require temps to go below freezing.
If the two fans are close enough to each other then you might be able to duct both to one roof vent. That would make roof venting half as painful.
As for roof venting it is not that high of a risk and in your situation a much better option than attempting to vent as shown. Important to get that warm moist air out away from any return to the attic.

best
Bud

You cannot tie exhaust fans together. Against building code.