We are looking into Hardi Panel constructed SIPS ias an alternate to the original CMU construction we started with due to code and costs. This is at the suggestion of another kind and experienced LiveModern.com memeber of course! This material can be painted, the ext seams can be battened, and we are looking to add Galvalume as an accent to break up the exterior some.

Cheers!

Hardi-plank and panel is a great material. The one drawback is that it comes from the factory pre-primed, and so must be painted, but it holds paint tenaciously and doesn't need to be re-painted as often as all other painted materials. Other than that it is an excellent product.



As far as snap-lock metal panels, they are a typical roofing product. It gives the look and function of old-fashioned standing seam metal but with much easier install (and therfore less $$).



"Paint Grip is pre-treated at the mill for subsequent painting in the as-received condition. The sheet goes through a phospatizing process which produces a deposit of hydrated zync on the galvanized surface, resulting in a dull gray appearance. This coating provides a good adherent base for painting, and also extends the life of the painted surface."



In a benign (non-coastal) climate it works well as a finish surface. Similar to corTEN you will invariably find that the manufacturers stress that paint-grip MUST be painted. That simply isn't the case as you can see here