Hello all, and especially @reef-building !
Here is a very extensive document prepared by Schoonship that was supposed to be in the Materials section of the Greenprint. It isn’t possible to download it there, so I asked Yvonne and she very kindly shared it with us.
It’s a comparative document that includes different parameters of the sustainability and life cycle of different materials (recyclability, durability, whether it is locally sourced…) Could be quite helpful!
20161401_Material selection decision chart_SB_V1_EN (1).pdf (316.9 KB)
It is quite small prints but it’s ok when zooming in…
(@reef-it @Lee could you please split this topic so that there is a specific thread for the takeaways? Might be a good idea to do it for the cohousing bike tour as well? And let us know how to do that maybe? 
Thanks!)