A cladding assembly for covering a facade, said cladding assembly comprising several cladding tiles, each tile having two opposite faces, respectively inner and outer faces, longitudinal edges, respectively right and left edges, in the lengthwise direction and transverse edges, respectively lower and upper edges, in the widthwise direction, where: - the outer face thereof has a lower portion and an upper portion, where the lower portion extends from the lower edge to substantially the middle of the outer face and is extended by the upper portion which extends substantially to the upper edge, where said upper portion has, to the right and to the left, longitudinal nesting elements (113, 114) extending only on the upper portion along the corresponding longitudinal edge, and - the inner face thereof has complementary longitudinal nesting elements (103, 104) extending along the longitudinal edges below the lower portion of the outer face, said complementary longitudinal nesting elements (103, 104) extending only below the lower portion and being shaped, in situation, to cooperate by nesting with longitudinal nesting elements (113, 114) provided on identical, adjacent tiles which are shifted downwards and located to the right and to the the left; wherein said tiles of the cladding assembly are supported by structural elements horizontally disposed and evenly spaced to receive the tiles, where at least one tile called central tile covers two tiles called right and left lower tiles, said right and left lower tiles being adjacent, shifted downwards and located respectively to the right and to the left of said central tile, said central tile having the complementary longitudinal nesting elements (103, 104) thereof which nest with the corresponding longitudinal nesting elements (113, 114) of said right and left lower tiles, and said central tile is covered by two tiles called right and left upper tiles, said right and left upper tiles being adjacent, shifted upwards and located respectively to the right and to the left of said central tile, said central tile having the longitudinal nesting elements (113, 114) thereof which nest with the complementary longitudinal nesting elements (103, 104) of said right and left upper tiles said cladding assembly being characterized in that it further comprises several retaining devices of the tiles on the structural elements, each retaining device having a general U-shaped arch shape and comprising a base and first and second wings extending opposite each other on either side of said base, each wing having a nesting member of a shape complementary to that of a longitudinal nesting element, each retaining device being provided to cooperate with the longitudinal edge of a tile, on the one hand, by nesting the nesting member of a first wing on a longitudinal nesting element formed on a lateral strip along said longitudinal edge and, on the other hand, by placing the second wing of said retaining device below a structural element, each retaining device being spaced from the upper edge of the retained tile by a distance comprised between 0.3 and 0.5 times the length of the tile; and in that, for the or each central tile, two retaining devices retain it to a structural element and, for each of the two retaining devices thereof, the first wing has the nesting member thereof which nests on a longitudinal nesting element of said central tile and the first wing has an inner edge which passes over the corresponding right or left lower tile. - the outer face thereof has a lower portion and an upper portion, where the lower portion extends from the lower edge to substantially the middle of the outer face and is extended by the upper portion which extends substantially to the upper edge, where said upper portion has, to the right and to the left, longitudinal nesting elements (113, 114) extending only on the upper portion along the corresponding longitudinal edge, and - the inner face thereof has complementary longitudinal nesting elements (103, 104) extending along the longitudinal edges below the lower portion of the outer face, said complementary longitudinal nesting elements (103, 104) extending only below the lower portion and being shaped, in situation, to cooperate by nesting with longitudinal nesting elements (113, 114) provided on identical, adjacent tiles which are shifted downwards and located to the right and to the the left; wherein said tiles of the cladding assembly are supported by structural elements horizontally disposed and evenly spaced to receive the tiles, where