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What is Insulated Glass Unit (IGU)? A Complete Guide to Energy-Efficient Architectural Glass

I. Structure of Insulated Glass Units

Key Features

l Excellent Heat Insulation: Effectively reduces heat transfer, saving energy and protecting the environment.

l Good Soundproofing Effect: Capable of reducing noise by 25 to 40dB.

l Anti-Condensation: Sealed structure combined with dry air or inert gas prevents water vapor condensation.

l High Safety & Security: Customizable with tempered, laminated, or low-iron glass combinations to meet diverse safety requirements.

l Great Aesthetic Appeal: Offers a variety of glass combinations to satisfy diverse architectural design and appearance needs.

Ⅲ Common Insulated Glass Configurations

Configuration ExampleGlass Combination
Air LayerFeatures & Applications
5+12A+55mm Clear Glass + 12A + 5mm Clear Glass12mmBasic configuration, cost-effective, widely used for doors and windows
6+12A+6 Low-E6mmLow-E Glass + 12A +6mm Clear Glass12mmEnergy-saving and thermal insulation, suitable for high-rise buildings
8+16A+8 Low-E8mmLow-E Glass +16Ar +8mm Clear Glass16mm(Argon)High thermal insulation, suitable for passive houses and energy-efficient buildings.
6+12A+6+12A+6Double Insulated Glass Structure12mm+12mmSuperior thermal and sound insulation, suitable for certain walls.
6+1.52PV6PVB+6+12A+6Laminated +Insulatated Glass12mmBlast-Resistant Safety Glass — Designed for High-Security Environments.
Ⅳ. Core Material Analysis of Insulated Glass Unit

1. Spacer Bars

· Aluminum Spacer: Cost-effective & durable, widely used for standard doors & windows.

· Warm Edge Spacer: Reduces heat transfer and greatly improves the energy efficiency of the whole window.

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