Reply to Please help me suggest a solution for rainwater drain pipe noise

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[quote=Anonymous]OP, we had this problem with one of our own downspouts near the bedroom window, following rain when it would just be the drip drip drip.  And yes, I did go outside and put a dish sponge at the bottom bend of the spout.   Once we routed our downspouts underground, we did not have this issue as the curved metal was swapped out for a straigth down PVC(?) pipe and then underground.

From what I see online:

Adjust the downspout angle. 
Many times, the simplest fix for a noisy downspout is to reposition it. By using a spacer or a longer clip to move the bottom of the downspout further away from the house, the water will no longer fall straight down to the bottom of the elbow, but will instead hit the side and trickle down – in a much quieter fashion.

Swap out the bottom part of the downspout. 
Removing the metal elbow where your runoff water empties out and replacing it with a similar piece made of vinyl or plastic will do a much better job of muffling sounds, so you’ll hear a faint murmur rather than an echoing metallic clang when the water hits the elbow.

Insulate the downspout. 
One of the surest ways to dampen sound is to prevent surface vibrations. This can be accomplished by wrapping foam insulators around your downspout pipe (or using spray foam to do the same thing).

Absorb the water. 
In many cases, noisy downspouts are the result of water directly hitting the bottom of the downspout elbow. The trick to quieting down this irritating noise is to attach something to the bottom of the downspout on the inside to absorb the water as it drips or trickles down. This can be achieved by putting a scrubber sponge, a square of artificial turf, a section of shingle or a foam downspout insert into the bottom of the downspout opening.[/quote]

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