2 Gutters Into One Downspout

A gutter should not slope by more than one inch in 17 feet.

2 gutters into one downspout.

2 by 3 inches 600 square feet. This fit exactly right into an existing gutter on the house. A 2 inch by 3 inch downspout diameter can handle the water load on a 600 square foot. According to lynch aluminum you should run at least one downspout per 40 feet of gutter length.

It will take two downspouts to drain a 34 foot gutter. Adding a 2 by 3 rectangular downspout for instance boosts your gutter s capacity by 600 square feet of drainage area. Constant ice dams and roof valley coming into one downspout. Available for 2x3 or 3x4 size downspout.

We cut another opening in the gutter then brought that into this y piece. Use the chart below to figure out how many extra downspouts you need. As with gutters a downspout s capacity must match or exceed the expected runoff. Gutter slope will affect drainage.

I got tired of always having to move those hoses around hence the trench work. 3 by 4 inches 1 200 square. 14 colors click on picture for details. 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.