Why is my downspout so loud?
The noise you are hearing is the sound produced by water as it falls (or drips) and hits the elbow. You can silence this annoying sound with Downspout Silencers.
Downspout Silencers use a matted cushion strip which absorbs the dripping noise. They are installed by removing the bottom elbow and placing the Silencer clips onto the back top of the elbow and strips down into the elbow. When the elbow is reinstalled the Silencer is secured.