How to vent a bath fan to the outside.
Install bathroom vent through vinyl siding.
It eliminates the need for routing ductwork through the house and these fans usually dry the bathroom more quickly.
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Other venting options includes running the duct up through the roof or down through the soffit.
This old house general contractor tom silva shows how to properly install a roof mounted bath fan vent.
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Never allow the duct to simply blow into an attic crawlspace or.
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Install backer rod and caulk.
In this particular installation tom ran the exhaust duct into the attic and through a sidewall to the outdoors.
A bath fan will remove moisture from the air and help prevent moisture related problems such as mildew that could become big expensive problems later.
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White plastic louver vent cover outdoor stops birds nesting in dryer bathroom vents exhaust cover outside.
Note that the bathroom vent fan must always exhaust to the outdoors.
This involves running ductwork from the fan usually though an attic and out through the roof.