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The g-values and colour/tint of our Solar Control Products are summarised in the table below:


g-value Colour / Tint Product (6 mm panes)
0.19 Clear/Neutral  Pilkington Suncool™ 30/16
0.20 - 0.28 ** Blue  Pilkington Activ SunShade™ Blue
0.23 Clear/Neutral
  Pilkington Suncool™ 40/22
0.27 Clear/Neutral  Pilkington Suncool™ 50/25
0.27 Clear/Neutral
  Pilkington Suncool™ Q60
0.29 - 0.35 * Blue  Pilkington Arctic Blue™
0.31 - 0.41 * Grey  Pilkington Optifloat™ Grey  
0.32 Silver   Pilkington Suncool™ Silver 50/30
0.32 Clear/Neutral  Pilkington Suncool™ 60/31
0.32 - 0.43 * Bronze  Pilkington Optifloat™Bronze
0.32 - 0.47 ** Clear/Neutral  Pilkington Activ SunShade™ Neutral
0.33 Clear/Neutral  Pilkington Suncool™ Q70
0.33 - 0.45 ** Blue  Pilkington Activ™ Blue
0.36 Clear/Neutral
  Pilkington Suncool™ 66/33
0.36 - 0.43 * Green  Pilkington Optifloat™ Green
0.36 - 0.53 ** Bronze  Pilkington Activ™ Bronze
0.37 Clear/Neutral  Pilkington Suncool™ 70/35
0.39 Clear/Neutral
  Pilkington Suncool™ 71/39
0.43 Clear/Neutral  Pilkington Suncool™ 70/40

Colours for identification purposes only


Figures based on IGU incorporating 4 mm Pilkington Optifloat™ Clear as inner pane unless otherwise stated.

* g-value depends on which thermal insulation glass is selected as inner pane.

** g-value depends on which thermal insulation glass is selected as inner pane (all based on 4 mm thickness).

For higher g-values please refer to our Thermal Insulation glass product range.

For thicknesses other than above calculate using Pilkington Spectrum below:

Spectrum Calculation Program


Pilkington Spectrum is a Windows-based glass performance model which enables you to quickly and efficiently calculate key properties of a wide range of single glazing and insulating glass units. Also available as an app for mobile devices, you can use Pilkington Spectrum to provide the following information:

  • Light and solar properties (transmittance, reflectance, absorptance, g value, etc.).
  • Centre pane Ug-value.
  • Sound insulation values.
  • Global Warming Potential (GWP), or carbon footprint.
  • Ultra violet (uv) transmittance and colour rendering index (Ra).
  • Other properties (e.g. pendulum body impact resistance, fire resistance, resistance to manual attack, etc.).
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