US Patent 7647738 Pre-cast concrete veneer system with insulation layer

A multi-layered panel comprises a first layer made of concrete, a second layer made of foam and an edge perimeter region. The first layer is a thin concrete layer of near uniform thickness that is cast onto the second layer. The exterior surface of the concrete layer simulates an exterior surface of a building. The front of the foam layer has dimensions designed to accommodate the application of the concrete layer. The back of the foam layer has features that assist in mounting the panel on an exterior surface of a building. The edge perimeter region includes a system for interconnecting adjacent multi-layered panels.