The Arcilite double pitched roof is a glass roof construction with an inclination angle of 30° or 45° and can be placed on a horizontal roof-plane (0°). The end connection can be made with or without an end panel. The glass construction can also be placed free-standing or against a connecting wall. The fully thermally separated skylight is feasible with a variable span and length. The grid size is variable with a maximum of 900mm. The mullions are supplied thermally separated and are uniformly distributed (to a maximum distance of 900mm) along the length of the glass roof.