NOVELTY - The support tile (1) has a gradient adjustment portion (8) that passes through a tile segment (4), and has a through-hole (6) whose inner peripheral surface is formed with a female thread in which a gradient adjustment bolt (7) is provided with a bolt nail hole (21) through which a bolt shank (19) is passed. A circumferential surface of bolt shank is provided with a male thread and is screwed together with through-hole. The nail holes (9) are formed through tile segment. The anchoring nails (22) are inserted into nail-holes to anchor tile segment to a roof surface.    USE - Support tile for fixing and supporting on-roof installation such as solar cell module installed on rooftop of building.    ADVANTAGE - The inclination adjustment portion is provided with the through-hole portion and inclination adjustment bolt which are penetratingly provided by the tile main segment, to adjust the inclination of the support tile with respect to a roof surface in an effective manner. The gap can be produced between the normal tiles located under the support tile by the change of the inclination which concerns. Since the length of the bolt shank can be protruded in the downward direction from the tile main segment according to rotation of an inclination adjustment bolt can be adjusted, the fine setting of the amount of gaps can be attained. Some fixed nails used for fixation of a support tile are inserted by the bolt nail-hole portion pierced along the axial direction of the bolt shank of an inclination adjustment bolt, and it contributes to fixation of a support tile. Thus the number of nail-hole portions penetratingly provided to a tile main segment can be reduced, and it becomes possible to combine the function of the through-hole portion for inclination adjustment, and one nail-hole portion. Since the through-hole portion is provided in the position along the centerline of a tile main segment, fixing the location which concerns with a fixed nail can be stabilized in fixation of the support tile. The inclination adjustment bolt can be rotated in the state which set the support tile to the roof surface.    DESCRIPTION OF DRAWING(S) - The drawing shows the cross-sectional view of the support tile looked from the side illustrating the state which attached the support tile to the roof surface of a roof structure.    Support tile (1)    Through-hole (6)    Adjustment bolt (7)    Gradient adjustment portion (8)    Nail-holes (9)    Bolt shank (19)    Bolt nail hole (21)    Anchoring nail (22)