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Aluminium Spacer IGUs

Aluminium spacer insulated glass units use a rigid, widely proven spacer profile to create the cavity between panes, offering dependable sealed-unit construction for applications where consistency, durability, and cost efficiency matter.

Proven SystemCost EfficientRigid Spacer
Aluminium spacer insulated glass units
A practical sealed-unit solution for standard residential and commercial glazing where dependable performance and budget control are both important.

Overview

Aluminium spacer systems have been used for decades in insulated glass manufacture because they provide accurate cavity definition, strong dimensional stability, and compatibility with a broad range of glazing build-ups. The spacer also houses desiccants that help manage residual moisture within the sealed unit and preserve clarity.

These systems remain a dependable choice for projects where solid sealed-unit construction and cost effectiveness are prioritised, particularly in standard residential and commercial applications with moderate thermal demands.

Key benefits

  • Provides strong rigidity and consistent cavity spacing.
  • Offers a long-established, widely understood sealed-unit solution.
  • Supports effective moisture control through integrated desiccants.
  • Works well where budgets are important and thermal requirements are moderate.
  • Compatible with clear, tinted, laminated, toughened, and Low-E glass combinations.

System Detail

Available options and build flexibility

Aluminium spacer systems can be manufactured in a range of widths to suit different cavity requirements and can be paired with multiple pane types depending on the intended thermal, acoustic, or safety performance of the insulated unit.

  • Available in multiple spacer widths to match different cavity depths.
  • Can be supplied with air-filled or gas-filled cavities where specified.
  • Compatible with double- and triple-glazed builds.
  • Supports standard and oversized insulated glass panels.
  • Suitable for clear, tinted, laminated, toughened, and Low-E pane combinations.
Aluminium spacer insulated glass unit example
Aluminium spacer IGUs can be configured across a variety of cavity widths and pane combinations for standard and oversized glazing applications.

Performance Data NHG

Reflex-Seal insulated glass units performance reference.

Review visible light, solar energy, and European standards values for the Reflex-Seal insulated glass unit range.

Reflex-Seal Insulated Glass Units

Product Visible Light Solar Energy European Standards
Transmission Reflection outside Reflection inside Direct Transmission Absorption Reflection outside Solar Factor (g)
EN 410
Shading Coeff
Absorp-g DIN /
U-value
EN 673 W/(m2-K)
Solar heatgain Coeff
SHGC
Reflex-Seal Clear 85 8 8 75.2 16 8.8 76 0.88 2.8 76
Reflex-Seal Clear LE 78.1 14 13 61 26 13 73 0.84 2 73
Reflex-Seal Neutral 70 LE 67 12 12 46 47 7 53.1 0.62 1.9 53
Reflex-Seal Neutral 52 54.1 14.9 11 46.6 40.7 12.7 55.2 0.65 2.8 55
Reflex-Seal Silver 20 20.2 30.5 23.9 15.9 55.6 28.5 28.1 0.33 2.8 28

Project Support

Need guidance on selecting the right insulated spacer system?

Our team can help you compare build-ups and choose an aluminium spacer insulated unit that suits your performance requirements, environment, and budget.