2 Gutters Into One Downspout

Gutter slope will affect drainage.

2 gutters into one downspout. Available for 2x3 or 3x4 size downspout. Use the chart below to figure out how many extra downspouts you need. We cut another opening in the gutter then brought that into this y piece. Adding a 2 by 3 rectangular downspout for instance boosts your gutter s capacity by 600 square feet of drainage area.

3 by 4 inches 1 200 square. According to lynch aluminum you should run at least one downspout per 40 feet of gutter length. A 2 inch by 3 inch downspout diameter can handle the water load on a 600 square foot. As with gutters a downspout s capacity must match or exceed the expected runoff.

It will take two downspouts to drain a 34 foot gutter. Having 2 exits into 1 downspout released the vacuum that was forming from having only 1. On one end of the house i used to have drain hoses coming from both corner downspouts joining up in the middle and then running out via one hose into a large ditch. A gutter should not slope by more than one inch in 17 feet.

I got tired of always having to move those hoses around hence the trench work. Constant ice dams and roof valley coming into one downspout. 2 by 3 inches 600 square feet. 14 colors click on picture for details.