My bathroom ceiling fan drips water sometimes. I went into the attic and noticed it was a flex duct that was tied up to a rafter and back down again to face a ventilation louvred opening at the end of the attic. I took it down from the rafter and buried most of it in the insulation and pointed it straight out the louvered opening. I am still getting dripping and I'm not sure if the wind blowing in forces the moisture back down to the fan or if I need to point the exhaust end downward through a soffit vent?
Answer:
The hose must lead warm, humid air through the soffit and not only into or toward it. If it is still dripping, I feel you may have an air leak somewhere and/or perhaps not enough insulation over the duct. There should be at least eight inches of bat insulation there.
Courtesy of Ren Molnar, Construction Consultant at HomeFocus.com. I can also be reached at (613) 748-3003 and Home Focus – The Radio Show is broadcast live 8 to 10 A.M. (Ottawa, Ont. time) on Saturdays on www.cfra.com.
