Electromagnetic wave-shielding construction material and method for producing the same

To provide an electromagnetic wave shield building material capable of efficiently shielding electromagnetic wave at a low cost. An electromagnetic shielding sheet formed of a conductive ink layer 4 printed on one surface of base material sheets 2 and 3 is stack at least on one plate surface of a panel part 1 formed of the mixed material of the major composition of the panel with conductive substance so that the conductive ink layer 4 comes into contact with the plate surface. Thus, electromagnetic wave can be shielded efficiently without increasing the conductivity of the panel part itself, and a stable electromagnetic wave shielding performance without a variation can be provided. In addition, since the building material can be manufactured in the same production process as before, the production can be performed easily, production yield can be increased, and a production cost can be suppressed.