yes Dennis.. got it in one...
From the supplier's website:
'' Ayara Fiber Cement Roof is made of SCG Portland cement mixed with synthetic fiber. The texture will therefore be flexible enough and long lasting. Its light weight helps saving the cost for structure during construction. It has wide ranges of colors offered. The products are widely used in the region, Thailand, Malaysia, Myanmar, Laos, Cambodia.''
I wanted something that hopefully had good strength and durability to cope with that roof curve.
The light weight was also factor
I'm sure you noticed... the tiles are being screwed on, not wired.