an improved radio frequency wave attenuating wall or door material comprises a laminated structure having as an integral part thereof one or more layers of a viscoelastic material which also functions as a glue and one or more electrically conducting layers . an electrically conducting material such as tape or a formed metal channel provides an electrical connection between the electrically conducting material and an exposed outer surface of the laminated structure . in one embodiment the electrically conducting material is paint . in one embodiment , standard wallboard , typically gypsum , comprises the external surfaces of the laminated structure and one or more conductive layers are constructed between the gypsum exterior . in one embodiment , the conducting layer material is selected to provide physical security in addition to radio frequency wave attenuation . the construction is such that acoustical attenuation is also achieved .