To provide a plain tile in the plain tile and channel tile of alternate arranging and roofing with a rise in which both gables of the plain tile in the plain tile and the channel tile are reinforced as a countermeasure for the leaking of the rain in a roofing tile in a method for the plain tile and the channel tile, and to enable complete blank roofing by improving the stability of the bonnet tile.

The Q side and R side of both gables of a plain tile body 1d ion the plain tile and channel tile of alternate arranging and roofing with the plate type bent rise are formed up to a bent section 15 together with the bent rise 2a in parallel mutually from the weathering side 3, the thickness section of the bent rise 2a is widened to the outside and the Q side and the R side are widened together with the bent rise 2a in the bent section 15, and the bent rise 2a along the Q side and the R side is formed in succession in parallel mutually or in a fan shape from the Q side and the R side to the rear-section side 4. Since the body 31 of the bonnet tile with sags are brought into contact with the contacting side faces 16 of the bent rise 2a of the plain tile body 1d by the sags E and F and also brought into contact with the weathering of a flat bottom (h) and has excellent stability, the complete blank roofing of the roofing tile which has not been considered is enabled.