To eliminate the cause of corrosion of a building body by a method wherein the building body is surrounded with a metallic plate having one surface positioned facing a ventilation space inside an outer peripheral material and the other surface formed integrally with a non-air permeable foamed heat insulation material layer.
A floor structure part positioned facing an underfloor space 4 communicating with outside air through a ventilation port 15 is surrounded with a metallic plate 12a and a non-air permeable foamed heat insulation material layer 13 is formed integrally with the inside. Further, a wall frame 9 is surrounded with a metallic plate 12b formed integrally with a heat insulation material layer 13 through an outer wall 8 lined with ceramic and a ventilation space 11a situated at the inner side thereof. A roof frame 10 is surrounded with a metallic plate 12c formed integrally with a heat insulation material layer 13 through a roof lining 14 and a ventilation space 11b formed at the inside thereof, and the ventilation space 12b communicates at a roof top part 16 with outside air to effect natural convection ventilation. This constitution firmly separates a heat-insulation layer 13, formed integrally with a metallic plates 12a-12c, from outside air, cuts off a flow between indoor air and outside air, and eliminates the cause of corrosion, such as condensation of dew, due to accumulation of a damp content in the building body 1.
GUNJI HIROYOSHI
SATO HIROSHI
KISHI SETSUO
URETHANE KOGYO KK