Insulating a shipping container? Let Midgaard Spray Foam Systems do it the right way. Unlike fiberglass batt insulation that requires a framed substrate to hold the material, or rigid foam panels that are glued to the containers corrugated exterior walls and ceiling, creating voids and allowing moisture to be trapped, Sprayed Foam Insulation adheres to any surface and expands into every nook and cranny forming a monolithic barrier eliminating condensation buildup. Ceilings are no match for this product, it will not sag. Spray Foam Insulation offers the highest insulation value, of any other insulating material available today.