Rain head install from attic? Not concerned with freezing?
Pretty standard, the only way to do it on a top floor situation.
There's insulation on the pipe itself, and there will be lots of extra insulation on top of that as we're going to get some new blown installed as well and heap it up pretty good there.
The pipe was also slightly angled towards the head side of things, so it does drain back the top horizontal piece eventually for the most part. Downside is it drips for 5-10 minutes after you get out, but meh.