opus incertum

Opus incertum was an early Roman building construction technique used for facing walls. It involved using irregular, roughly shaped stones set in mortar, creating a patchwork appearance. This method was prevalent during the late Roman Republic before being succeeded by more refined techniques like opus reticulatum, which featured stones set in a diagonal checkerboard pattern. While opus incertum provided a basic facing, it lacked the regularity and visual appeal of later methods. Other Roman construction techniques included opus latericium, which used bricks or tiles, and opus signinum, a type of mosaic pavement made from gravel, stone, or terracotta fragments.123