Vario Sun

gradually transforms

in the presence of heat

to provide protection and

reduces overall solar heat gain.


Vario Sun is a self-darkening, dynamic glass that gradually transforms in the presence of bright sunlight and heat to provide protection to building occupants from excessive sun glare, ultraviolet rays as well as a reduction in overall solar heat gain. Vario Sun doesn’t obstruct the view outside like conventional blinds do, and significantly minimizes the need to cool and light the interior environment due to its intuitive interlayer that reduces the amount of solar energy being transmitted through the glass. In summer it responds to heat and bright glare yet remains transparent; meaning the natural light balance in the room is always perfect, always pleasant. When the temperatures plummet, Vario Sun lets in the sun’s warming rays, something traditional tinted glass cannot offer.

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Generating its power from the sun itself, Vario Sun requires no external user involvement or power source. Installation is straightforward and simple, resulting in immediate potential energy savings. 

Vario Sun results in low U-Values since it blocks solar heat from entering windows in certain climactic conditions.  Valuable collections and costly construction materials that are shielded behind Vario Sun are protected from the regular photoreaction that occurs due to UV exposure.



External Glazing


  • Fixed or casement windows and doors
  • Solar Control Shading screens
  • Sliding/folding doors
  • Balustrades and balconies
  • Create comfortable environments in offices, bedrooms, sunrooms and conservatories
  • Can be single, double or triple-glazed including low E glass and gas filling, resulting in improved thermal performance and reduced solar heat gain and unparalleled U Values

Security and Safety

  • Reduces criminal infractions.
  • Protect staff and interiors from the effects of harmful UV rays.
  • Reduced harmful solar heat gain.
  • Reduce the effects of noise pollution.


In an effort to reduce glare the windows of many commercial buildings are permanently tinted, therefore requiring more lighting inside the building than that which is optimally needed.  Natural day lighting, which is adjusted by Vario Sun, has been shown to improve health and well being, and thus its regulation is considered by many to have a strong influence on one’s attitude and productivity.

  • Energy Savings on cooling & lighting costs
  • Eco friendly, reduces building carbon emissions
  • Exceptional optical qualities that reduce glare and eye strain
  • Eliminates the need for expensive window dressings like electronic louvers; blinds and solar shades used in architectural application
  • High durability, solid-state technology with no moving parts to wear out or break
  • Large sizes of any shape can be produced
  • Stable color characteristics for the life of the unit
  • Ambient temperature control via solar control
  • Aesthetically pleasing
  • Hygienic low maintenance material
  • Enhanced corporate image
  • Reduces uncomfortable “Gold fish bowl” feeling when living or working in high-density buildings such as apartment blocks or office complexes
  • Reduces fading of carpets, furniture and protect valuable artwork
  • Protects skin from damaging UV rays
  • High UV stability
  • Cost competitive
  • Infinite range of light transmission levels without the blocking of one's view

Configurations Available

  • Maximum Width Size: 1651 mm
  • Thickness: from 25 mm
  • Colour tints: Green, Grey, Brown
  • Glass types: Gas filled double glazed units
  • Processing: Double Glazed, Curved, Shaped, Triple Glazed

Control Methods

This thermochromic technology modulates the amount of light coming through the glass in response to changing environmental temperatures (such as sunlight exposure, air temperature and wind velocity).  People don’t have control over the glass.


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