http://www.hobotraveler.com/blogger.html The world would be 100 times more beautiful it someone invented beautiful and cheap roofing.
Andy, I really enjoy your travels.. The ROOFS! They have the solution. In know in Canada and I think in Germany, they make roof tiles out of commercial cannibis, Pot Plant Stalks). The tiles are very similar to cement tiles or ceremic, clay tiles. They are lighter and stronger, and I think very soon, as cheap. I don't know the process, but the raw material grows like weeds, needs no fertilizer and can be processed up to the point of fiber by manual labor.
Is it as cheap as a steel roof, and as easy to install to win over and be purchased by 80 percent of the people on the planet.