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        • Insulation zone slide show
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        • Video: Glass Tower Problems
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LiteZone Glass Inc.
  • Home
  • Overview
  • Product
    • How it works >
      • Construction
      • Scalability
      • Insulation zone >
        • Insulation zone slide show
      • Minimizes weight
      • No "kissing"
    • Highest performance >
      • Performance values
      • Testing
      • Visible light transmission
      • Complements wall R-values
    • Human comfort >
      • Comfortable spaces
      • Sound insulation
      • Blocks ultraviolet light
    • Extreme longevity >
      • Long life overview
      • Air filled
      • Pressure equalized
      • Superior film suspension
      • Superior spacer and edge seal >
        • Spacer and edge seal slide show
        • Why IGUs fail slide show
    • Reduce costs >
      • Reduce capital costs
      • Reduce energy costs
      • Lowest cost relative to performance
      • Large windows
      • Life cycle costs >
        • Video: Glass Tower Problems
  • Applications
    • Upgrade old or failed IGUs
    • Instead of triple pane
    • Renovations
    • New construction
    • Sunrooms
  • Projects
    • Replacement of failed IGUs in residence
    • Replacement of IGUs in high-rise buildings
    • Upgrade old windows
    • LiteZone® IGUs in fiberglass window frames
  • Featured Curtain Wall Project
  • "Frameless" Installations
  • Window Systems
  • Curtain Wall Systems
  • Curtain Wall Upgrades
  • Purchase
    • Direct
    • Through partners
    • Become a partner
    • Warranty
  • In the Media
  • Contact
LiteZone Glass Inc.

Product/How it works:

Insulation zone

Construct
Scalability
Minimizes weight
No "kissing"

​LiteZone® increases the glass edge and frame insulation zone to achieve high R-values.

The thickness of a LiteZone® glass unit allows it to be incorporated into a window frame that has an extremely large thermal break, thereby creating a large "insulation zone" which is necessary for a window to achieve overall insulating values in the desired R12 to R19 range or even higher.

The industry has sought to achieve high insulating values by using 1 to 2 inch thick glass units. Using such a thin glass unit causes the overall window performance to be limited by the insulating value of the frame and of the glass unit spacer. The fact is a great deal of energy can conduct even through a good frame when the "thermal break" cannot be wider than the glass unit thickness of 1 or 2 inches.
The thermal resistance of a material is directly dependent on the amount of material there is. For example consider that wood has a thermal resistance per inch of about R1. So a one inch double pane glass unit in a wood frame may have a centre of glass value of about R3, but at its edge around the entire perimeter of the glass unit, the wood frame only has a thermal resistance of about R1. For a LiteZone® L0679 glass unit with a 4.4 inch thickness, the wood frame now has an insulating value of about R4.4 with a dramatic improvement in the overall window insulating value.
​Slide show - explains the "insulation zone" in more detail:
Slide show
Why can't other IGUs increase their "insulation zone"?
Answer
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