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  1. #1
    Join Date
    Jan 2013
    Posts
    4

    Default venting exhaust fan through basement wall

    We're adding a new bathroom in the basement of our 1920's house. The exhaust van duct needs to be vented to the exterior. The basement walls are very solid, poured concrete. The electrician wants to cut a hole in the wood 2x10 rim joist above the concrete wall. Because this 2x10 rim runs perpendicular to the joists, I don't think it would be a problem structurally, but cutting a 3" diam. hole in the side of the house makes me nervious. Any thoughts?

  2. #2
    Join Date
    Dec 2010
    Location
    Houston Texas
    Posts
    2,363

    Default Re: venting exhaust fan through basement wall

    Drilling a hole in the side of the house makes most people nervous. With some good silicone or urethane sealant you will be fine.

  3. #3
    Join Date
    May 2008
    Location
    Pacific Northwet
    Posts
    1,361

    Default Re: venting exhaust fan through basement wall

    This is reasonable, should be no problem structurally. I might need new glasses, 'cuz I can't see it from here.
    The "Senior Member" designation under my name doesn't mean I know a lot, it just means I talk a lot.I've been a DIYer since I was 12 (thanks, Dad!). I have read several books on various home improvement topics. I do not have any current code books I can refer to. I was an apprentice plumber for two years.

  4. #4
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,089

    Default Re: venting exhaust fan through basement wall

    As mentioned before doing it correctly is no problem. In fact, if you walk around your house you'll notice a few vents, pipes, wires, etc going in n out.

    The key is to seal around the vent. Use elastic soft putty, sold in a lb package at HD.

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