Insulation panel seal

An insulated product display case, comprising:

• a rear wall comprising a first insulated panel comprising a first foam core residing between a first pair of metal sheets, the first insulated panel comprising a first end face at which the first foam core is exposed between the metal sheets;
• a base having a non-flat cross section and comprising a second insulated panel comprising:
• a second foam core residing between a second pair of metal sheets, and
• a cap bracket covering a longitudinal edge of the second insulated panel and defining a central longitudinal notch, a surface of the cap bracket forming a second end face;
• and
• a thermally insulated joint formed between the rear wall and the base, the thermally insulated joint comprising:
• a continuous layer of cured foam disposed within the central longitudinal notch and bonded to both the first end face and the second end face and extending along a mated length between the first and second end faces, the layer of cured foam filling the central longitudinal notch, and
• a continuous layer of non-foam sealant bonded to both the first end face and the second end face and adjacent to an outer edge of the layer of cured foam, the layer of non-foam sealant extending along an entire length of the layer of cured foam.

A method of assembling an insulated display case, the method comprising:

• laying a continuous bead of liquid foam on a first end face of a first insulated panel comprising a first foam core residing between a first pair of thermally conductive sheets, wherein the first end face comprises a central longitudinal notch such that the first end face defines, in cross section, an indentation between two elevated surfaces, and wherein the continuous bead of liquid foam is disposed within the longitudinal notch;
• laying a continuous bead of non-foam sealant along one of the two elevated surfaces the first end face;
• positioning a second end face of a second insulated panel proximate and facing the first end face of the first insulated panel, the second insulated panel comprising a second foam core residing between a second pair of thermally conductive sheets;
• and
• attaching the first insulated panel to the second insulated panel by allowing the bead of liquid foam to cure and bond to the first end face and the second end face, forming a thermally insulated joint in which the second end face faces and is bonded to the first end face by a layer of cured foam and a layer of non-foam sealant, the layer of cured foam extending along a mated length between the first and second end faces, the layer of cured foam filling a center portion of the thermally insulated joint, and the layer of non-foam sealant bonded to both the first end face and the second end face and adjacent to an outer edge of the layer of cured foam, the layer of non-foam sealant extending along an entire length of the layer of cured foam.