I want to follow up a bit on my own post. For years there's been a bathroom fan venting into the area of the attic underlying the ice-dams that form on my roof. (note: a previous homeowner installed that fan, not me) Finally, it occurred to me to take the fan out and seal up the hole in the cieling. Since doing that, I've not had ice form on that part of the roof. What's more, snow has cascaded ff that part of the roof just as it does from other parts.
Now, we haven't had much snow since I've removed the fan. I'd like to see the results from a few 4+ inch snowstorms to be absolutely certain that I've fixed the problem, but the results so far are surprisingly encouraging.
I'm going to install a new fan, but you can bet your bippy I'll vent it outside.
Jonathan Gennick
http://gennick.com
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Member Since
11/03/2002
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84 Posts
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