To provide the redecoration structure of anew tile roof capable of simply executing a rigid roof material thereon without peeling an existing new tile roof.

The repair structure of this new tile roof comprises a plate-like rigid roof material A forming a pit-like engaging groove 6 along the longitudinal direction on a rear face 1a, a locking piece 9 locked on the engaging groove 6, a fixing fitting B formed of a fixing piece 10 projecting outward, and an adhesive. The locking piece 9 of the fixing fitting B is engaged with the engaging groove 6 of the rigid roof material A, the fixing fitting B is fixed on the rigid roof material A to form a roof material P, which is fixed on an existing new tile roof, the fixing piece 10 of the fixing fitting B is fixed on an existing roof substrate by a fixing tool, the adhesive is formed on the rear face 1a of the roof material P, and adhered to the existing new tile roof.