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Thread: Galvanized Steel Duct for Dryer Ducting

  1. #1
    DIY Senior Member chefwong's Avatar
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    Default Galvanized Steel Duct for Dryer Ducting

    Any downsides to using galvanized steel ducting for Dryer Ducting ?
    I like the heavier gauge of the product, and the fact that it comes in longer runs.

    My dryer run is not the most ideal with 2 90 degree bends...it is what is is, but I'm inclined to do the run in the galvanized steel duct material vs the thinner aluminum stock.

    Whaddya guys think

  2. #2
    Senior Robin Hood Guy Ian Gills's Avatar
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    I used it for that reason too. I doubt it will be as resistant to corrosion as aluminium but hey, it's galvanized.

    And so are the fasterners on my deck.

    Outside in the rain.

    Remember to tape the joints and not use screws.

  3. #3
    DIY Senior Member chefwong's Avatar
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    No tape for me. Mastic all the way....

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    Moderator & Master Plumber hj's Avatar
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    well, the common round pipe also comes in 10' lengths if you know where to shop.

  5. #5
    Homeowner Thatguy's Avatar
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    Quote Originally Posted by chefwong View Post
    Any downsides to using galvanized steel ducting. . .vs. . .aluminum. . .
    Ask and ye shall receive. . .
    http://www.pipingnews.com/airduct.htm
    [except when you get an error message].

    Try this
    http://www.freecalc.com/ductfram.htm
    Last edited by Thatguy; 09-18-2010 at 08:16 AM.

  6. #6
    Moderator & Master Plumber hj's Avatar
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    Also you have to consider that flow velocity is what carries the lint out of the pipe and the larger the pipe/duct the lower the velocity so there will be a faster buildup in the larger duct.

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    DIY Senior Member chefwong's Avatar
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    I've yet to find a good trades shop on the plumbing /mechanical side....that was fair to a non trades person......I've got a GREAT electrical supply shop.

    I ended up doing the duct run in galvanized 4" round, used mastic as well as rubber buytl (mastic) foil tape. Applied mastic on the *locking seams* as well. It's as air tight as it gets......

    On to the next project, which I always despise - painting.
    The new BM Aura paint is different...you don't cut with a wet edge. It's like r********* how to paint again.

  8. #8
    Senior Robin Hood Guy Ian Gills's Avatar
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    My supply house does plumbing, lumber, electrical, landscaping and more....

  9. #9
    DIY Senior Member chefwong's Avatar
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    Heh. There's a great one the further I get out east but we're talking a 2.5 hrs drive...
    Unfortunately I survive by using the local boxes but things like paintbrushes, recpetacles, etc I go to the supply shop since that stuff is not *watered down*.

    I like buying framing wood at the boxes as I go there early, pick nice straight ones, etc....

  10. #10
    Moderator & Master Plumber hj's Avatar
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    quote; I've yet to find a good trades shop on the plumbing /mechanical side....that was fair to a non trades person

    And WHY should they be "fair" to a non-trades person? If I had a supply house which was "fair to a nontrades person", I would stop patronizing them, because they would be making it impossible for me to make a living, if the customer could buy things at my cost, so that it would be difficult to add a profit to them. YOU, as a customer, can either buy it at retail from Home Depot or similar, or have me furnish it to you at about the same price.

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