Very dark grey sodium/calcium glass

A very dark grey coloured soda-lime glass contains iron, cobalt and selenium as colouring agents in the following proportions (expressed in the form indicated as percentages by weight of the glass): Fe 2 O 3 1.00 to 1.65%, Co 0.017 to 0.030% and Se from 0.001 to 0.010%. The glass has a luminous transmission, measured for Illuminant A for a glass thickness of 4 mm (TLA4), of less than 20%, and a total energy transmission, measured for a glass thickness of 4 mm (TE4), of less than 20%. This glass is particularly suitable for vehicle roof panels.