Abstract: A system is provided for firmly attaching roof tiles to a building. The system includes an underlayment, a layer of adhesive overlying the underlayment and a plurality of ceramic slabs for mounting on the adhesive layer. Anchors are employed for securing the ceramic slabs in a contiguous manner to the adhesive layer. These anchors include a substantially planar first flange which is embedded within the ceramic slab. A web is fixed to the first flange and extends transversely away from the first flange and beyond the ceramic slab. A substantially planar second flange is fixed to the web at a location distant from the first flange and is embedded within the adhesive layer. The first and second flanges are generally parallel and are generally symmetrical relative to the web and are substantially coextensive. In another construction, the first and second flanges define first and second perimeters and the web is attached to both of the flanges at locations substantially central of the perimeters.