Architechtural Glass Architectural glass is glass that is used as a building material. It is most typically used as transparent glazing material in the building envelope, including windows in the external walls. Glass is also used for internal partitions and as an architectural feature. When used in buildings, glass is often of a safety type, which includes reinforced, toughened, laminated and insulating glasses. “NANDA TUFF“ Toughened Glass specializes in the design, production and installation of architectural glass.