We were asked to repair a leaking downspout, the customer had no idea where the water was coming from. Odd, in most scenarios you can clearly see where the leakages are on the elbows or outlets etc but in this case the answer was the actual downspout, behind the pipe.
The pipe as a piece is folded in on itself at the back to create a form of a pipe.
When downspouts/eaves are rarely maintained, bottoms of downspouts can clog which eventually causes a build up of water in the pipe. Fast forward a few months to winter where the water that’s still sitting in the pipe freezes, expands and causes the pipes to deform, resulting in an ineffective downspout.