Just found this forum and have been enjoying the saga of your rooftop garden/getaway. Many years ago I was living in Libya and new houses were being built across the street. I used to watch discreetly (the workers wouldn't have liked a woman watching them, especially one with her face uncovered -- at that time the Libyan women wore barracans with one eye visible).
Anyway, I was flabbergasted to see the concrete wall of the house go up, and then later someone would come with a hammer and chisel, or whatever and just pound a hole out, making it bigger until they could fit a window frame in, and then patch all the gaps up with more cement!