The invention relates to laminated glazing comprising a substrate, in particular a transparent substrate, optionally coloured, coated with an infrared-reflecting layer and capable of being used as glazing in buildings or in vehicles. The coated substrate is made up of the combination of a glass substrate in which the composition has a redox of less than 15 %, characterised by infrared reflection RIRV so that RIRV >= 1.087 * TLV, wherein TLV is the light transmission of the glass, and an infrared reflecting layer characterised by light transmission TLC so that TLC >= 1.3 * TIRC, wherein TIRC isthe infrared transmission of the layer.