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Vent bathroom fans through roof or gable wall?

8 years ago

In the 1998-built house I just bought, the bathroom fans vent to a gable wall in the attic. However, they're not currently connected. I am having a new roof installed and am wondering whether I should connect to the current gable vents or have roof vents installed. Approximately 10 and 16 foot runs, respectively. Venting directly through the roof seems to make sense, but living in the northeast we get a lot of snow on the roof in the winter, so am concerned about ice dams, leaking, etc. Any opinions/advice would be much appreciated.

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