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Low E Glass

PLANITHERM ULTRA N is Low-E glass with advanced thermal insulation properties. It offers advanced thermal insulation properties where neutrality and excellent performance are paramount.

Windows can reflect, take in, and transfer heat, so Low E coatings can be used to enhance the performance of a window.  Low E is a common abbreviation of “Low Emissivity”. Low Emissivity means a surface that gives off low levels of radiant heat. Therefore, a glass window with a Low E coating will reduce the amount of heat transfer, making your house warmer in the winter and cooler in the summer.


Enhanced Thermal Insulation

  • Optimum centre-pane U-value of 1.1 (90% argon-filled)
  • Helps to reduce heating requirements
  • Environmentally friendly solution, given the lower CO2 emissions associated with reduced energy consumption

Comfort & Aesthetics

  • Helps to eliminate cold areas around windows resulting in greater comfort
  • Maximises use of living and working areas
  • Reduces incidence of condensation on the inner pane
  • Neutral appearance in both transmission and reflection
  • Maximises entry of natural daylight

Low E Glass Planitherm Ultra N

The diagram below outlines how heat passing through your glass reduces when you use Double Glazing, Low E Double Glazing and Glazing Argon Gas instead of Air to fill the space between the two panes of glass. 

Low E Glass U-Values

What is a U-Value?

A U-value measures the rate of heat loss over a surface or material, how much heat passes through your glass. A lower U-value means lower heat transfer and better insulation of your home.