Patent ID: 7587984

Claim:
A method of insulating an existing cargo container, wherein the existing cargo container comprises an underframe having a top and bottom surface; a floor connected to the top surface of the underframe; first and second side walls having exterior surfaces; first and second end walls having exterior surfaces, and a roof having an exterior surface, the underframe, floor, first and second side walls; first and second end walls, and roof being connected to form an enclosure, the method comprising: preparing at least one insulating panel comprising an insulating layer and at least one outer skin located on at least one face of the insulating layer; attaching at least one insulating panel on an exterior surface of the first side wall, wherein the at least one insulating panel substantially covers the exterior surface of the first side wall; attaching at least one insulating panel on an exterior surface of the second side wall, wherein the at least one insulating panel substantially covers the exterior surface of the second side wall; attaching at least one insulating panel on an exterior surface of the first end wall, wherein the at least one insulating panel substantially covers the exterior surface of the first end wall; attaching at least one insulating panel on an exterior surface of the second end wall, wherein the at least one insulating panel substantially covers the exterior surface of the second end wall; attaching at least one insulating panel on an exterior surface of the roof, wherein the at least one insulating panel substantially covers the exterior surface of the roof; installing at least one closure on the boxcar to cover a portion of an exterior surface of the existing cargo container not covered by an insulating panel; and applying foam insulation to the bottom surface of the underframe.