Abstract: The roof tiles (1) of a sloping roof rest via a ridge on tile laths (2) and overlap one another in two directions. They are fixed with tile hooks (4) and each tile hook (4) comprises a first shaft section (7), which at the free end has a hook-shaped bend (8) which grips around a closing groove (6) on a side edge of a first tile, a second shaft section (9), which at the free end has a device (10) by which the tile hook is fixed to a tile lath (2), and a shoulder (11), which is located between the two shaft sections (7 and 9) and engages on the rear surface of a second tile partially located under the first tile. The two shaft sections (7 and 9) of the tile hooks are essentially perpendicular to the shoulder (11).