Gutter dripping

[joec1985]

Hi hopefully someone could help. My next door neighbour has a conservatory and his guttering hangs into my garden and when it rains heavily there is heavy overflow into my garden. Any idea what’s causing it. I had a look and there isn’t any leaves or debris inside it. Thanks in advance.

https://streamable.com/o7yex

 

[scbk]

Going by the amount of water, there can't be much going into the downpipe, so that could be blocked, or not enough fall, or too far to the downpipe (for the amount of water).

Either way tell them to get it sorted

 

[foxhole]

Gutter blocked, damaged , installed badly , or all three.