This Old House general contractor Tom Silva shows how to properly install a roof-mounted bath-fan vent. (See below for a shopping list and tools.)
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Tom helped a homeowner with a bathroom fan that was venting moist air into his attic. The fan’s vent was installed on the underside of a roof soffit, causing moist air to get sucked up into the attic, which was leading to mold and mildew problems. To correct the situation, Tom moved the vent onto the roof, being careful to flash it properly so there would be no leaks.
Shopping List for How to Vent a Bath Fan Through the Roof:
– insulated duct [https://amzn.to/2WiWlTj]
– vent hood [https://amzn.to/2K0zK7j]
– sheet metal sleeve [https://amzn.to/2VJQEtf]
– foil duct tape [https://amzn.to/2WmMFXW]
– nylon zip ties [https://amzn.to/2YS1Wh3]
– tri-polymer sealant [https://amzn.to/2VQJ4gc]
– 1¼-inch roofing nails [https://amzn.to/2wkNQZ2]
Tools List for How to Vent a Bath Fan Through the Roof:
– hammer [https://amzn.to/30EKJcE]
– utility knife [https://amzn.to/2X2eKk5]
– flat pry bar [https://amzn.to/2QnOzlo]
– drill/driver [https://amzn.to/2wezNV5] fitted with 4¼-inch-diameter
– hole saw [https://amzn.to/2VNilRN]
– crimping tool [https://amzn.to/2QmRlHV]
– aviation snips [https://amzn.to/30J7pIL]
– caulk gun [https://amzn.to/2X8l0XK]
About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we’re ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O’Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.
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How to Vent a Bath Fan Through the Roof | This Old House
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View Comments
Nail through roof. Is that a good idea. More like to be a water inductor.
For some reason the Boston accent adds 50% more reliability.
Fantastic video, thanks!
All without losing his shades, parked on his handsome head......
Tom Silva does such a great job walking everyone through intimidating jobs. Thank you.
Safety ropes would still not get me up on that roof.
He did a good job. I would've thanked him too.
made homeowner do dirty part in dealing with duct around the insulation lol
Ah Tawmy this is great
What ladder with safety top is he using?