STRUCTURE OF EXTERNAL WALL OR ROOF HAVING PERMEABLE LAYER FOR REDUCING TRANSMISSION OF RADIATION HEAT AND ACQUISITION OF SOLAR RADIATION HEAT AND EXTERNAL MATERIAL FOR EXTERNAL WALL OR ROOFING MATERIAL

摘要

A structure of an external wall or a roof and an external material for the external wall or a roofing material. In the structure of the external wall or the roof of a building, heat insulating and heat shielding performances are provided to a permeable layer for which dehumidifying action by the circulation of air was expected to secure high heat insulating and heat shielding performances for the external wall or the roof without changing the thickness of an insulator. Accordingly, when the heat insulating and heat shielding performances must not be changed, the thickness of the insulator can be reduced less than before. The building in which an external material (11) is installed through the permeable layer (9) installed on the outside of the structure of the external wall or the roof is characterized in that low heat radiating sheets (8, 8a) having a low radiating performance against the heat radiation of long wavelength components are installed on the permeable layer (9) side surfaces of one or both of the external material (11) and the insulator (7).