Roofing options

[MarkP]

I know ferro-cement boats have been built that have lasted decades. I also know that steel reinforced concrete buildings have been built in coastal areas where the rebar is rusting and spalling the concrete. It seems that reinforced concrete can work if built properly and can fail if not built properly. I have been told by people who built ferro-cement boat hulls how important the quality of the work is to the finished product. The pictures smack of a make it up as you go attitude which coupled with embedding materials that can rot into the concrete seems to me to place this project at the "it's going to fail eventually" end of the spectrum.

I am often amazed how long the water droplets on the shower curtain hang around in Eden Roc. The concrete would stay moist, the bamboo and burlap would stay moist, and they would rot. The burlap seems to be a substitute for the final layer of steel mesh usually used in ferro-cement.