Glazing

Toughened and/or bent glazing comprising at least one multilayered coating deposited on a glass sheet before the thermal toughening and/or bending treatment, characterised in that, in sequence starting with the glass sheet, the multilayered coating comprises at least:

• a) a first dielectric comprising at least one layer composed of a zinc-tin mixed oxide containing
• (i) at least 12% tin, or
• (ii) at least 20% tin,
• b) a first silver-based infrared reflecting layer,
• c) a first barrier layer,
• d) a second dielectric,
• e) a second silver-based infrared reflecting layer,
• f) a second barrier layer,
• g) a third dielectric comprising at least one layer composed of a zinc-tin mixed oxide containing
• (i) at least 12% tin, or
• (ii) at least 20% tin,
• h) an upper protective layer containing or based on the oxide of Ti, Zr, Hf, V, Nb, Ta or Cr, or a mixture of these oxides,
• and in that at least one of the barrier layers comprises a first thin film of metal or metal compound and is covered by a second thin film of a compound of a different metal from the first thin film, the two films being arranged between the infrared reflecting layer and the dielectric following in the sequence.