If the wind is blowing on that damper, some is gonna get through, especially
if it's a short run of duct. One thing you may want to check though, there
should be another damper right inside the outlet flange of the fan itself.
If it's missing, certainly more air will get through, than should



"Donna" wrote in message
news:IVIuh.1059$Pk5.452@trndny04...
Our bathroom has a ceiling fan/light combination that lets in one hell of
a draft. During our saga about the leaking bathroom roof (resolved, it
seems, finally), I got a look at the construction, and the exhaust fan
shunts the air through something that looks a bit like a dryer hose, to a
circular exterior port on the house. That port is hooded, and there is
some kind of apparently useless circular "flap" that does very little to
keep cold (!!! it was 20 below last night) air out of the bathroom.

If you wizards can suggest a way to solve this, other than only showering
in the summer, I would be eternally grateful.

Donna