PURPOSE: To magnify the extent of the design of a roofing tile, particularly a crown tile while arbitrarily adjusting the overall length of the crown tile.

CONSTITUTION: In crown tiles 10 disposed to the joining sections of roof surfaces and roof surfaces, the crown tiles 10 are formed in a shape 12 that cylindrical bodies formed in an approximately tapered shape as a whole are halved in the axial direction. The insides of one-end diametral expanding sections 14 of the crown tiles 10 are superposed to the outsides of the other-end diametral contracting sections 16 of other crown tiles 10, and can be slid.