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  • 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
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  • Contact
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.

​Projects:

Upgrade old windows

Replacement of failed IGUs in residence
Replacement of IGUs in high-rise building
Fiberglass windows
"Frameless" installations

​Use LiteZone® to upgrade old windows for improved comfort and reduced energy costs.

​The photos below show old wood windows before and after LiteZone® IGUs were installed (controls are at top of slides). The building is more than 100 years old. The hung sashes were removed and replaced by LiteZone® L0679 (4.4" thick) insulating glass units in the existing wood frames by installing glass stops front and back. The upgrade converted the windows from operable to fixed. The upgraded windows achieved insulating values of R12 (U=0.083) center of glass and an overall insulating value of about R10.5 (U=0.095) dramatically reducing energy costs and improving occupant comfort,
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