PURPOSE: To display miniature plates to be fitted to be held piece by piece, by providing an exposed section set a position close to an eaves, with notches in the direction orthogonal to the eaves, to form small scant sections, and by inclining the surfaces to a specific surface, in the respectively different directions.

CONSTITUTION: Integrally with a non-exposed section 3 including a ridge-close side 1, an exposed section 4 including an eaves-close side 2 is set. Besides, the exposed section 4 is provided with notches 5 orthogonal to the eaves-close side 2, and small scant sections 6 are formed, and the surfaces of the small scant sections 6 are inclined in the respectively different directions to the rear side surfaces. Then, the roof sheathings are arranged in parallel with the eaves, and fresh roof sheathings are arranged to be fixed so that the non-exposed section of ready-fixed roof sheathings may be covered with the exposed section of the fresh roof sheathings.