A roof tile installation assembly having a plurality of battens, each having a front end portion and a back end portion, and defining a channel between the front end portion and the back end portion, and at least one roof tile having a front end and a back end, the back end having a downwardly protruding flange. In use, the plurality of battens are preferably arranged parallel to one another on a rooftop so that the front end portion of each batten is toward the eave of the rooftop and the back end portion of each batten is toward the peak of the rooftop, and each roof tile flange is preferably arranged to be received by a batten channel so that the roof tile is substantially constrained from moving forward or backward relative to the batten so that the front end of each roof tile is arranged to be supported by the next adjacent batten.