We actually looked at using colourbond & alucobond but the cost was too expensive and we were worried about the ripple effect when the sun hit this sort of material.
Instead we used two layers of 6mm cement sheet and painted it black. We laid the 1st sheet and then laid the 2nd sheet with a 20mm expressed joint. We then capped it off with black colourbond. NOTE: use Matt black paint, not gloss.
However, Im not sure it its true but I have heard that they dont supply the product to the public anymore but will do the render themselves. You may have to ring them.
Bagnato Architecture & Interiors
ippos40
Bagnato Architecture & Interiors