Hi, I am new to the community here :) I am also only a few months away from living mostly off grid--I will have access to power for charging batteries. I joined this community because I think the combination of pallets, straw, and cob is genius and I want to learn how to put it all together! Although I love the many benefits (and the beauty) of a living roof, I was wondering if anyone has built something like this with a metal roof for rainwater collection? Any advice is appreciated. Thanks!