$11 million roof will clean itself

The $11 million roof of a new cricket stadium under construction in Dubai Sports City will be self-cleaning thanks to a titanium dioxide (TiO₂) fiberglass membrane. As project participant Mike Lester explained, “The reaction of titanium dioxide generates active oxygen on the surface of the membrane using radiation from the UV rays in sunshine and the organic matter (dirt) that is built up on the surface. Nitrogen oxides are then decomposed through natural oxidation reduction and the decomposed dirt is then washed off by the rain."