A lighting assembly includes a light fixture adapted to be disposed in relation to an opening defined in a surface of a structure such that a lamp may be installed in the light fixture through the opening of the structure. A thermal insulation barrier surrounds the light fixture, is positioned in close proximity of the opening of the structure and constructed so as to entrap heat from the opening of the structure. A trim has an outer surface, configured to substantially enclose the opening, consists of at least one fireproof material, and is adapted to engage the light fixture so that the outer surface is disposed in proximity to the opening of the structure and forms a continuous surface with the structure.