US Patent 9848741 Shower enclosure system

A shower enclosure comprises a plurality of prefabricated panels that are arranged to at least partially surround a space for bathing. At least one of the panels is a layered structure having a first layer, a second layer, and a third layer. The first layer forms an interior surface of the shower enclosure exposed to the space for bathing. The third layer is arranged between the first layer and the second layer, and is coupled to the first layer and the second layer. The layered structure is a sandwich structured composite comprising the first layer, second layer, and third layer.