The roof is intended to be used as sort of a mini-park area, so I made a stairway to get up onto it, and a rebar trellis over it to provide shade for people and to help keep the house cooler.
The roof is made of what I call "nylon-cement", a combination of nylon fishnet and cement; in this case over iron rebar. It is similar to ferro-cement construction, except that one layer of nylon fishnet is substituted for the standard three layers of chicken wire.
Here you will see the steps I went through in doing this remodeling project.
Step 1: The Original House
The shed had a cement slab roof that was poorly made. The rebar was set too low in the cement. Rust had caused expansion of the rebar and destruction of the interior side of the cement slab.
The house had a wood and corrugated iron roof. "Polillas", kind of like microscopic termites, had eaten up the wood. Booth roofs needed replacing.
I decided to make a roof that would connect both structures, bridging over the space between them.
The rooftop could be used as a little park area once it had a trellis for shade over it. The view from the roof is very nice.