In the skylight industry there are two general categories...small units skylights and large (monumental) skylights.
Large skylights are typically glazed with multiple pieces of glass, most often two layers of glass sealed together at the edges. These are known as IG (insulated glass) units. They have become the most common glazing material for the monumental glass industry. Building codes typically require that the inner glass lites be made of glass which is tempered and laminated. ...This story is related to the following:Green & CleanSearch for suppliers of: Wall Systems