The downspout should taper in slightly as it approaches the ground.
How to connect gutter elbows.
Secure the downspout to the drop outlet with a mounting support bracket.
However you will likely need to put on an elbow first a piece that curves the gutter and lets it sit more flush to the house.
This will direct water down into the downspout.
Insert an elbow up one inch into the bottom of the funnel shaped opening on the gutter which is called a gutter outlet.
Attach a drop outlet from the end of the gutter to the start of the downspout.
Unaltered two downspout pieces measure an inch or two shy of 20 feet not to mention the distance the two elbows at top cover.
Mark the length needed using a straightedge to create a cut guide.
This is our first video in our tutorial on metal roofing.
Since downspouts are straight adding an elbow or two allows you to get the curve that you need to place your downspout in the right position.
Connect the elbows to the gutter connector with a sheet metal screw.
Insert the bottom of the downspout into the top entry of the elbow.
Attach the new downspout elbow fixture to the shortened downspout.