Prefabricated foamed ceramic flashing, manufacturing process and mounting method

The invention discloses a prefabricated foamed ceramic flashing, a manufacturing process and an installation method, and relates to the technical field of flashing manufacturing. Comprising a first assembly and a plurality of second assemblies, the first assembly is a cuboid, the top and the bottom of each second assembly are two parallel planes, four side faces perpendicular to the top face or the bottom face are arranged between the two parallel planes, and one side face is a curved face; the first assembly is located on the uppermost portion, the second assemblies are sequentially connected below the first assembly, the top faces of the second assemblies adjacent to the first assembly are connected with the lowermost plane of the first assembly, and the bottom faces of the second assemblies located on the upper portion are connected with the top faces of the second assemblies located on the lower portion between the adjacent second assemblies. The curved surfaces of the second assemblies are mutually conne