Rain gutters should be attached to the fascia and run the entire length of the roof ending with a downspout.
How to run two level roof downspout.
If the gutter is too level it will hold a lot of run off water and risk becoming too heavy for the supports to handle.
Install two u shaped downspout brackets on the corner of the house one high and one low.
Bring the downspout to within 1 ft.
Gutters need to slope towards the downspouts in order to function properly.
In this first picture one can see.
If the gutter run measures longer than 40 feet 12 2 m it should be positioned to pitch down from the middle aimed toward a downspout at each end.
Finally trim a notch in one end of a 36 in.
Mark the trench line.
Length of downspout to make a fold up extension.
In this video we show why it is so important to run you upper roofs downspouts to the lower roofs gutter or to the ground.
Place other stakes spaced 8 feet apart in between.
Use a string and 1x2 stakes to lay out the trench.
Tie the string to the downspout then stretch it out and around all the stakes.
The water is allowed to run on the roof surface and is collected by the lower gutters.
Pound in two stakes 4 feet from the house and directly in front of each downspout.
Typically a section of five inch gutter that is one foot long can hold up to 1 2 gallons of water whereas a section of six inch gutter that is one.
It is very common for dormers and other roof structures that have gutters above the level of the gutters on lower portions of the roof to empty onto the roof surface.
Of the ground and install the last elbow.
Use a measuring tape to determine the length of the gutter.