It has been sometime since I looked into Green Roofs (2009). There is a fair bit of information out there but mostly with a fee attached. I now reside in Sidney B.C. and have started a 10' x 10' plus shed work shop with a 14' x 14' roof. I have been trying to locate person or persons in the Victoria, Saanich even up Island area that may have built a project like this. I have visited the one commercial lot at Shawnigan lake which supplies succulents. Perhaps you may know of someone or can point me in the right direction?