Gutter Slope

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Verdeboy

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

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

Thanks
 

Livin4Real

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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.
 
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Verdeboy

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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?
 

Livin4Real

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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
 

Verdeboy

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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.
 

Frenchie

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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.

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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