I'm not sure why that concrete rendered like that. I think something with my config didn't render it like that on my end so I didn't see it. Oops. Easy fix though, thanks for pointing it out.
Maybe a no build necessary on the roof of house, I suppose. I've yet to see anyone try that, though. Mostly playing 6v6 on the map. I guess I'll ask if we can try it and see if it's OP.