United Kingdom & Ireland - EN


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Guardian NEXA™


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Lower carbon, versatile performance

Guardian Nexa 6 has a reduced embodied carbon of more than 30% compared to standard 4mm Guardian ExtraClear™ float glass. This equates to an embodied carbon value of 6.38 kg CO2e/m2*. It can be laminated and/or used as a base glass for all Guardian Glass products, such as our SunGuard, ClimaGuard, or Bird1st Lami range of products to add features such as energy efficiency, bird deterrence, or sound reduction when laminated. 

*The embodied carbon reduction was calculated by comparing the estimated value for 4mm Guardian Nexa™ 6 glass produced at our Guadian Glass Goole plant in the UK, and the estimated average value for 4mm Guardian ExtraClear™ glass produced in our European plants. The average embodied carbon value for Europe is based on the product’s Embodied Carbon Factor (ECF) which was derived from the regional Life Cycle Assessment (LCA), using 2021 data from all Guardian Glass European plants, considered to be a representative average. The Guardian Nexa™ value and regional European average embodied carbon value are pending verification for conformance to ISO 14040/44, ISO 21930, and the Product Category Rules (PCR) through a program operator and independent reviewer. Numbers are subject to vary due to the critical review process. The new Guardian Nexa™ EPD and EU regional EPD are expected to be published by mid-2024.
The embodied carbon data is the CO2 equivalent in kg per square meter of glass (CO2 eq.), emitted during the glass production (A1-A3), and was calculated using a standard 4mm thickness, not the actual glass thickness. The A1 – A3 stages include the environmental impacts from the raw materials extraction and processing stage, raw materials transportation to the manufacturing site, and the manufacturing of the product.

Product information

  • Guardian NEXA 6 3-8 mm
  • Partitions
  • Storefronts
  • Windows
  • Skylights
  • Facades
  • Roof window
  • Curtain walls
  • Doors
Manufacturing Options
  • Heat Strengthened
  • Heat Soaked
  • Annealed
  • Bent
  • Laminated
Recommended Coating Positions
  • Not applicable
Maximum Size
  • <3210x9000mm
Edge Deletion
  • No
Glass Type
  • Float glass
Glass Functions
  • Aesthetics
Fabrication Options
  • Can be Laminated
  • Can be in an Insulating Glass Unit
  • Neutral
Performance data

The glazing make-up suggestions below are pre-defined to provide examples of commonly used combinations of products. There are many other glass combinations available at Glass Analytics.



GLASS: Guardian Float Glass Nexa™ 6 (CE) Glass, 4mm

Calculated Values are in accordance with EN 410:2011 / EN 673:2011

Performance Values

Visible Light
Transmittance (τv)
91 %
Reflectance outside (ρv)
8 %
Reflectance inside (ρv)
8 %
General Color Rendering Index (CRI)
Transmittance UV (τuv)
74 %
Solar Energy
Solar transmittance (τe)
87 %
Reflectance outside (ρe)
8 %
Reflectance inside (ρe)
8 %
Solar absorptance (αe)
6 %
Solar Factor (g)
88 %
Shading Coefficient (sc)
Thermal properties
U-Value (Ug)
5.8 W/m²·K
Performance Calculations
With the performance calculator, you can quickly calculate the performance data that matches your own glazing make-up
  • 1 Pane
  • 2 calculation format
  • 3 Results
  • 1 Outer Pane
  • 2 Inner Pane
  • 3 cavity
  • 4 calculation format
  • 5 Results
  • 1 Outer Pane
  • 2 Middle Pane
  • 3 Inner Pane
  • 4 cavity
  • 5 calculation format
  • 6 Results
Choose a glazing

  • Monolithic

    Not available for this product

  • Double

    Not available for this product

  • Triple

    Not available for this product


Monolithic Laminated

Double Glazed

Double Outer pane Laminated

Double Inner pane Laminated

Double Inner and Outer pane Laminated

Triple Glazed

Triple Outer pane Laminated

Triple Inner pane Laminated

Triple Inner and Outer pane Laminated

Outer Pane

There is only one substrate available for this product.
There is only one Interlayer available for this product.
There is only one substrate available for this product.
There is only one thickness available, to calculate other thickness' please go to Glass Analytics
Glass thickness are symetrical and represent the glass to be laminated
There is only one coating available
There is only one coating available
There is only one coating available
There is only one coating available
Choose your calculation format

There is only one calculation standard available
There is only one unit available for this calculation standard

Calculated Values are in accordance with

Performance Values

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