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XO Windows is Proud to Now Offer  LoĒ³-340 Glass

When it comes to reducing solar heat gain from the blazing sun, LoĒ³-340 simply has no equal. And because it’s not tinted, you enjoy a number of other advantages as well. First, there’s the cost savings of no tint. Then you avoid the disadvantages of tinting: the potential for thermal stress breakage and the potential need to heat treat the glass.
Tinted glass has several other glaring deficiencies. Regular tinted glass works by absorbing sunlight, so the glass becomes hot in the sun. The color of the glass also changes with its thickness. On the other hand, LoĒ³-340’s appearance and performance remain the same regardless of glass thickness.
What’s more, LoĒ³-340 has a very high LSG (light to solar gain ratio) of 2.17. So even though solar gain is being controlled, plenty of visible light is still allowed inside. (NOTE: LSG based on 340/clear with 3mm glass thickness.)
LoĒ³-340 Solar Control Glass
  • Ultraviolet (UV) - LoĒ³-340 blocks approximately 98% of the harmful UV radiation.
  • Visible Light - LoĒ³-340 absorbs and reflects 60% of the visible light, which gives the coating glare control and its soft muted blue color.
  • Near Infrared (NIR) –  LoĒ³-340 reflects nearly all of the invisible solar infrared rays.
This graph compares the solar transmission of clear glass, bronze tinted glass and LoĒ³-340. Clear glass allows nearly all the solar energy through. Bronze glass reduces transmission by absorbing sunlight, but it’s more effective at blocking light than heat. To match the glare control of LoĒ³-340, a tinted glass would have to be 1/4″ thick.
Even at this heavy thickness, the solar blockage of tinted glass doesn’t compare with LoĒ³-340. The LoĒ³-340 plot demonstrates the “selective” nature of the coating. Visible Light Transmittance is more than twice the Solar Heat Gain Coefficient. As a result, LoĒ³-340 provides effective glare control and maximum solar blockage in a softly tinted design – without the punishing discomfort of heat-absorbing glass or the visual disruption of highly reflective glass.

Year-round thermal comfort is mainly the result of two things:

  1. Blocking oppressive solar heat gain in hot weather, thus maintaining cooler glass temperatures.
  2. Reducing heat loss in cold weather, thus maintaining warmer glass temperatures.
Because LoĒ³-340 is more than a solar control glass, its advanced design provides a very low U-Factor of 0.25. This results in more comfort and energy savings in cold weather.