To provide a metallic roofing excellent in soundproof efficiency decreasing noises resulting from vibration occurring when rain or the like hits the roofing.

The metallic roofing is so constituted that a damping material 20 formed of a viscous body having self-viscosity making isobutylene-isoprene rubber as a main ingredient is closely fixed to the center of the rear side 11 of a roofing body 10 in the shape of a belt and that a non-alignment face with the roofing body 10 of the damping material 20 is coated with an aluminum foil 21.