Once you have all of your supplies start by attaching the downspout outlet and caps to the roof.
How to install gutters downspouts.
Using a hacksaw follow the areas where it is marked and saw accordingly.
Install two u shaped downspout brackets on the corner of the house one high and one low.
Screw a downspout elbow to the outlet tube protruding down from the gutter.
Buy special roof hanger mounting straps for houses without fascia boards or for fascias that aren t vertical.
Try to drop the depth of the trench at least 1 8 inch per foot to help.
Rivet all joints including the connection with the outlet.
Slide the short length of the downspout onto the bottom of the top elbow and slide the top of the lower elbow onto the short length.
Secure the downspout outlet to the gutter with four pop rivets or screws.
Place a step ladder under the area you are installing the downspout.
Hold another elbow against the house and cut a piece of downspout to fit between the two elbows.
Downspouts on gutters that drain large roof areas or if you live in an area with torrential rains.
As with gutters a downspout s capacity must match or exceed the expected runoff.
Increasing the pitch increases a gutter s handling capacity but the gutter may look askew over a long run.
Step 3 attach the downspout to the gutter.
Then cut the gutters to size and attach the fascia brackets to the rafter tails.
Dig a trench eight to 10 feet long 12 to 14 inches deep and about six inches wide for each of the downspouts on your house.
Both the connector and the gutter should not have any water on them.
To learn how to install the brackets gutters and downspout keep reading.
Use needlenosed pliers to slightly crimp the elbow to fit into the downspout as shown.
Step 2 drill a hole in the bottom of the gutter at the 4 inch mark with a 1 inch hole saw attachment to the drill.
Slope long gutter runs 40 feet or more down both directions from the middle and put a downspout on each end.
Measure in 4 inches from the end corner of the gutter with a tape measure and mark the bottom of the gutter with a pencil.
This will end up with a downspout with a diagonal end.
The standard is about inch per 10 feet.