The cover sheets are covered with water-based acrylic paint that is 100% opaque, creating a smooth, even effect. The result is cladding sheets that are resistant to green moss and algae, water stains, and dirt. Cembrit Cover cladding can take plenty of impact, too: the cover sheets will not buckle if struck, making them ideally suited to the hustle and bustle of the building site.
http://www.cembrit.co.uk/rainscreen-cladding/cembrit-cover/