An appliance comprising: an outer wrapper; an inner liner; a trim breaker having a wrapper channel that receives a wrapper edge of the outer wrapper and a liner channel that receives a liner edge of the inner liner to define an insulating cavity therein; and a multi-component thermal encapsulation material defined by a pre-mix state, an application state and a sealing state, the pre-mix state defined by distinct components of the thermal encapsulation material being separated from one another, the application state defined by the distinct components combined together into an uncured state of the thermal encapsulation material, and the sealing state defined by the thermal encapsulation material disposed within the wrapper and liner channels (20, 24) and surrounding the wrapper and liner edges (22, 26), respectively, wherein the sealing state of the multi-component thermal encapsulation material defines a hermetic seal between the trim breaker and the outer wrapper and the inner liner, wherein the inner liner and the outer wrapper are metallic and the trim breaker is plastic, characterized in that the liner edge includes a plurality of liner protrusions that engage at least one sidewall of the liner channel, wherein engagement of the plurality of liner protrusions with the liner channel centers the liner edge within the liner channel such that the thermal encapsulation material engages both sides of the liner edge and in that the wrapper edge includes a plurality of wrapper protrusions that engage at least one sidewall of the wrapper channel, wherein engagement of the plurality of wrapper protrusions with the wrapper channel centers the wrapper edge within the wrapper channel such that the thermal encapsulation material engages both sides of the wrapper edge. an outer wrapper; an inner liner; a trim breaker having a wrapper channel that receives a wrapper edge of the outer wrapper and a liner channel that receives a liner edge of the inner liner to define an insulating cavity therein; and a multi-component thermal encapsulation material defined by a pre-mix state, an application state and a sealing state, the pre-mix state defined by distinct components of the thermal encapsulation material being separated from one another, the application state defined by the distinct components combined together into an uncured state of the thermal encapsulation material, and the sealing state defined by the thermal encapsulation material disposed within the wrapper and liner channels (20, 24) and surrounding the wrapper and liner edges (22, 26), respectively, wherein the sealing state of the multi-component thermal encapsulation material defines a hermetic seal between the trim breaker and the outer wrapper and the inner liner, wherein the inner liner and the outer wrapper are metallic and the trim breaker is plastic, characterized in that the liner edge includes a plurality of liner protrusions that engage at least one sidewall of the liner channel, wherein engagement of the plurality of liner protrusions with the liner channel centers the liner edge within the liner channel such that the thermal encapsulation material engages both sides of the liner edge and in that the wrapper edge includes a plurality of wrapper protrusions that engage at least one sidewall of the wrapper channel, wherein engagement of the plurality of wrapper protrusions with the wrapper channel centers the wrapper edge within the wrapper channel such that the thermal encapsulation material engages both sides of the wrapper edge.