Horizontal IMPs are two single skin metal panels on either side of a factory-foamed-in-place core. There are two membranes, exterior and interior, and the foam core. The exterior membrane functions as the water, air, and vapor control layer. The interior membrane provides another layer of air and vapor control, and the foam core provides a layer of thermal control.

IMPs can be used in any climate or environmental condition, making them adaptable to many building design projects across different climate zones.