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Yes assembled myself, managed to do it on my own, is pretty easy so long as you are reasonably handy.
Yes, green roof too, it is well designed, easy to install and drains freely. Obviously takes a bit of attention to get it established but has been good since. They managed to deliver the wrong size rubber membrane to start with, but they ended up getting the correct one to me same day in the end!
Mine is holding up to the weather well after nearly 4 years now, no problems with quality, needs another coat of Osmo oil soon. Just bear in mind the doors are pretty easy to pop open, I've installed two van padlocks on mine to stop them trying.