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Thread: Gutter Slope

  1. #1

    Default Gutter Slope

    Anyone know the correct slope for gutters (inches per 50 ft)?

    Also, what's the recommended spacing for the hanger supports?

    Thanks

  2. #2
    DIY Senior Member Livin4Real's Avatar
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    taken from greenbuilder.com

    3.2 Conveyance Subsystem

    If a straight run of gutter exceeds 60 feet, use an expansion joint.

    Keep the front of the gutter one half inch lower than the back.

    Provide a gutter slope of 1/16 inch per foot minimum.

    Provide gutter hangars at 3 feet O.C.(on center).

    Gutter should be a minimum of 26 gauge galvanized steel or 0.025 inch aluminum.

    Downspouts should provide 1 square inch of downspout opening for every 100 square feet of roof area.

    The maximum run of gutter for one downspout is 50 feet.
    Last edited by Livin4Real; 09-28-2007 at 02:56 AM.
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  3. #3

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    That's more info than I had expected. Thanks.

    Are you saying that you can no longer use the the plastic gutter systems? Or are the codes you outlined for commercial buildings?

  4. #4
    DIY Senior Member Livin4Real's Avatar
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    I'd assume it would all be the same whether plastic or aluminum. I think the majority use aluminum, that's what most info is based on. I'm not a gutter man, but just had seamless put on ours after we put on the new roof. Looks great and the hangers are hidden, ended up around $4.50 a linear ft. for labor and materials. Also something to think about if your in a cold climate is the plastic ones becoming brittle in the winter and cracking or breaking.




    Brian
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  5. #5

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    I went with the very light aluminum system that use the couplings that are supposed to snap together easily.

    Well, they're a pain in the butt. Next time I'll just overlap the gutter sections, seal and rivet them.

  6. #6
    Homeowner geniescience's Avatar
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    water needs a slope before it starts to move.

    1/8th" per foot is better if you can fit it in the length.

    david

  7. #7
    Jack of all trades frenchie's Avatar
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    Quote Originally Posted by Verdeboy View Post
    I went with the very light aluminum system that use the couplings that are supposed to snap together easily.

    Well, they're a pain in the butt. Next time I'll just overlap the gutter sections, seal and rivet them.
    Sorry I missed this, hope you catch it anyways - the fittings are to allow for expansinon & contraction. If you rivet them, they'll buckle.
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