Gutter Question

[Terence McCann]

How many feet of gutter is permissible before a downspout is needed?

[Robert Jones]

Terry,

I know there are all kinds of different ways to determine the amount of gutter(s), but, I have always thought that it was/is 1 2x3 downspout for every 30 ft of gutter.

[Jerry Simon]

I ain't got a clue, but I'm sure how much roof surface the gutter handles comes into play.

I call it like courts call porn; I'm not sure what it is, but I know (it's wrong) when I see it.

[kurt]

I'm not aware of any requirement. I know that I call out a lot of gutters and downspouts that are too small nowadays.

Like Jerry said, it depends on the roof size and design.

[Mike Lamb]

Jerry equates the downspout answer to porn (I'm pretty sure Alcoa does too) and Kurt calls it out a lot when it is too small. Hmmm. Since I am an expert from the gutter, I can answer equivocally, there should be at least one downspout per length of gutter.

[hausdok]

There are lots of theories about that; here are a few. Review the articles, pick out a method you like and then come back here and teach it to the rest of us.

ONE TEAM -ONE FIGHT!!!

Mike

http://www.citysheetmetal.com/faq.html#designDrainage

http://www.copper.org/applications/arch ... ation.html

http://www.guttersupply.com/content.php ... &view=more

http://www.finehomebuilding.com/how-to/ ... stems.aspx

http://forums.jlconline.com/forums/show ... hp?t=51248

http://www.roofing.com/forum/sutra19218 ... c5eeea1487

[John Dirks Jr]

I like it when I see that 30' section of gutter from the main roof on a colonial drain onto the garage roof and then dump into the garages 15' section of gutter before being fed out one downspout. Then, the downspout dumps it onto negative grade that wraps around the back of the house and up against the foundation.

And people wonder why they have a musty basement and an active sump pump.