Solar Control

Solar Control

Reduces solar heat gain and offers high levels of natural light to provide comfortable and pleasant environments in which to live and work.

Solar Control Glass

The increased use of glass in architecture today makes it imperative to consider the comfort of a building's occupants. Solar control glass can be an attractive feature of a building whilst at the same time minimising, or even eliminating the need for an air conditioning system, reducing running costs of the building and saving energy.

In hot climates, solar control glass can be used to minimise solar heat gain and help control glare. In temperate regions, it can be used to balance solar control with high levels of natural light. 

Solar control glass can be specified for any situation where excessive solar heat gain is likely to be an issue, eg. large facades, glass walkways, atria and conservatories.

All products are available in toughened or laminated form for safety and security requirements, and can be combined with other benefits such as noise control.

How it works

Glass manages solar heat radiation by three mechanisms: reflectance, transmittance and absorptance.

These are defined as follows:

  1. Reflectance – the proportion of solar radiation reflected back into the atmosphere.
  2. Direct transmittance – the proportion of solar radiation transmitted directly through the glass.
  3. Absorptance – the proportion of solar radiation absorbed by the glass. 

Double Glazing Units - g-value guide

g-value Colour/tint Product (6mm panes)
0.18 Clear/Neutral  Pilkington Suncool™ 30/16
0.20 - 0.28 ** Blue  Pilkington Activ SunShade™ Blue
0.21 Clear/Neutral  Pilkington Suncool™ One 30/21
0.23 Clear/Neutral  Pilkington Suncool™ 40/22
0.27 Clear/Neutral  Pilkington Suncool™ 50/25
0.28 Clear/Neutral  Pilkington Suncool™ 50/25 OW
0.28 Blue  Pilkington Suncool™ Blue 50/27
0.29 - 0.35 * Blue  Pilkington Arctic Blue™
0.31 Silver   Pilkington Suncool™ Silver 50/30
0.31 - 0.41 * Grey  Pilkington Optifloat™ Grey  
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 - 0.45 ** Blue  Pilkington Activ™ Blue
0.36 - 0.43 * Green  Pilkington Optifloat™ Green
0.36 - 0.53 ** Bronze  Pilkington Activ™ Bronze
0.36 Clear/Neutral  Pilkington Suncool™ 66/33
0.37 Clear/Neutral  Pilkington Suncool™ 66/33 OW
0.37 Clear/Neutral  Pilkington Suncool™ 70/35
0.39 Clear/Neutral  Pilkington Suncool™ 70/35 OW
0.40 Clear/Neutral  Pilkington Suncool™ One 60/40
0.42 Clear/Neutral  Pilkington Suncool™ 70/40
0.45 Clear/Neutral  Pilkington Suncool™ 70/40 OW

  • Colours for identification purposes only
  • Figures based on IGU incorporating 6mm Pilkington Optifloat™ Clear 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


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