Roof tiles and roof tile structures and methods of making same

A roof tile, a plurality of which can provide a weather membrane over a roof structure comprising;

• a foam core member comprising an upper surface and a spaced apart lower surface bounded by a first lateral edge and an opposing spaced-apart second lateral edge and a first end and a spaced-apart second end;
• wherein the first end includes a first slot and the second end includes a second slot;
• a coating of cement-based material covering the foam core member upper surface forming an upper cement surface, a coating of cement-based material covering the foam core member lower surface forming a lower cement surface, wherein the distance between the upper cement surface and the lower cement surface of the thickness of the roof tile;
• a coating of cement-based material covering the foam core member first lateral edge forming a first lateral edge cement surface, a coating of cement-based material covering the foam core member second lateral edge forming a second lateral edge cement surface wherein the distance between the first lateral edge cement surface and the second later edge cement surface is the length of the roof tile;
• a coating of cement-based material covering the first foam core member end including filling the first slot and forming a first cement-based material coated L-shaped flange abutment member;
• a coating of cement-based material covering the second foam core member end including filling the second slot forming a second cement-based material coated L-shaped flange abutment member wherein the distance between the first L-shaped flange abutment member and the second L-shaped flange abutment member is the width of the roof tile;
• wherein the first L-shaped flange abutment member is upward facing and the second L-shaped flange abutment member is downward facing and the first and second L-shaped flange abutment members are so shaped that when one tile in a course abuts an adjacent tile in the same course, the adjacent L-shaped flange abutment members engage one another forming a non-rigid flexible connection whereby adjacent roof tiles in a course are able to pivot about their respective L-shaped flange abutment members.