A 2-part coating system imparting multiple benefits including self-cleaning, air purifying, deodorising, anti-fungal and anti-bacterial, UV protection and anti-carbonation. When used as part of a system, the ecotio2® coated surface is photo oxidising when exposed to daylight, so will neutralise organic pollutants, soot, oils and smog that collide or deposit on this coated surface. Organic growths such as mould and black algae streaking will be inhibited.