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Bathroom fan exhaust vent

459 Views 5 Replies 4 Participants Last post by  huesmann
Installing new fans and there isn’t existing venting in attic to the outside. I’m going to install a vent on the roof and connect insulated pipe to the fans.
Two questions. Can I connect both fan vents together and into the same vent in the roof. Secondly I’ve heard you are supposed to create a “loop” in the insulated pipe. Where do I create the loop? What’s the purpose of it? I’ve heard it’s so condensation doesn’t make its way back or something. Sorry I couldn’t be more specific. A
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No loop, a loop will fill with water and stop the flow.
So no loop but don’t run it super tight. Leave a little slack. Kinda what your saying?
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