Tiles, roof and building structure

A set of tiles comprising a first type of tiles each having a liquid collection surface and a second type of tiles each having a liquid repelling surface, wherein each type of tiles is a tile comprising a mating surface and a roofing surface, wherein the roofing surface is elevated above the mating surface and is shaped to guide or direct a liquid to flow from an upstream first end to a downstream second end under the influence of gravity when the mating surface rests on a leveled surface, and wherein the mating surface comprises a mating or coupling means which is adapted to make complementary mating or coupling engagement with a support member or a support surface having a complementary mating or coupling means, and wherein the first and second types of tiles are such that lateral sides of adjacent tiles of different types will overlap with a lateral side portion of a tile of the first type immediately underneath an overlapping lateral side portion of a tile the second type when mounted on a support member or a support surface, and wherein the overlapping side portions are complementarily curved such that liquid repelled by a tile of the second type will be collected by a tile of the first type when mounted on a support member or a support surface.

(canceled)

(canceled)