What pattern do the roof tiles form?

The Sydney Opera House roof tiles form a repeating chevron pattern.

The pattern is created by arranging small square ceramic tiles in paired, angled rows that produce distinctive V-shaped bands across the curved shells. From a distance, the roof appears white, but close views reveal a subtle combination of glossy white and matte cream tiles, with the chevrons giving the surface rhythm and scale.

The tile design was closely tied to Utzon’s architectural intentions. He wanted the shells to reflect Sydney’s changing light without producing harsh glare, so the tiles were made with a granular texture developed by Höganäs of Sweden. Each Sydney Tile measures about 120 millimetres square.

The chevrons were not merely decorative. Workers assembled tile panels in 26 chevron-shaped beds, whose bases matched the roof’s curvature. The finished roof contains more than one million tiles. A common mix-up is to call the layout simply diagonal or herringbone; those descriptions capture parts of the appearance, but “chevron pattern” is the specific term associated with the Opera House tiles.