Can someone tell me the correct name for the `Hopper ` like container at the top of a down pipe on the outside of a building, so I can compose a letter to my managing agents. I think its blocked or has a nest in it as water flows over the top and not down the pipe.
It's also known in the trade as a ''rainwater head''. But if you call it a ''rainwater collector box at the top of the downpipe'' they should be able to work out what you're referring to!!