Just a thought - Have you tested the existing cladding for asbestos prior to removing? Some of my coastal clients also feel the need to 'fill' the corrugations at the ends prior to capping or butting up to end frames: to dissuade small creatures from also moving in to a nice new home. Colorbond Surfmist will look great and horizontal will help to balance your homes height, however, it also gives ridges where dust and dirt sits and so needs to be hosed down more often - probably a good idea as it removes some of the salt as well. Good luck with the reno, the Architects image looks great.

Consider also Bondor panels. They are two panels with insulation sandwiched between. They have a stucco type finish for the exterior walls.

Colorbond steel needs no additional finishes is quick and easy to install, looks excellent, easy to replace any damaged sections and needs no ongoing maintenance or future painting...what's not to love?

Just wondering if anybody has painted the exterior of their home using Haymes “resonate”??? Extra points for pictures! 😂