Thin films with high near-infrared reflectivity deposited on construction material granules

摘要

Disclosed are construction granules surmounted by at least one thin film having substantial reflectance of near-infrared radiation, substantial transmittal of radiation in the visible light range, and substantial emissivity in the medium-infrared range to render the granules energy-efficient and aesthetically pleasing. Also disclosed are related methods for fabrication of the construction granules.