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KINGSTAR GLASS
Double Glazing Glass | High-Performance Insulating Glass Units for Energy-Efficient Buildings from KINGSTAR BUILDING GLASS
KINGSTAR BUILDING GLASS Double Glazing Glass, also known as Insulating Glass Units (IGUs), is a high-performance architectural glazing solution consisting of two panes of glass separated by a sealed air or gas-filled cavity. This construction creates a thermal barrier that significantly reduces heat transfer, providing approximately twice the insulation value of a single pane window. When combined with low-emissivity (low-E) coatings and argon gas fills, double glazing glass achieves U-values as
Double glazing glass, also referred to as an Insulating Glass Unit (IGU) or Double Glazing Unit (DGU), is a glazing product consisting of two panes of glass separated by a spacer and hermetically sealed to create an insulating air or gas-filled cavity. The sealed airspace—typically filled with air, argon, or krypton gas—acts as a thermal break, dramatically reducing the rate at which heat or cold can pass through the glass.
Double glazing glass is the most common type of IGU and has become the industry standard for residential and commercial buildings seeking energy efficiency. The insulating cavity provides approximately twice the insulation value of a single pane window, meaning half the heat loss.
How Double Glazing Glass Works
Double glazing glass combines three key technologies for optimal performance:
Dual-Pane Construction: Two panes of glass separated by a sealed airspace provide thermal resistance significantly superior to single glazing. The airspace traps still air layers that resist heat flow.
Low-E Coating: A microscopically thin, transparent metallic or metal oxide coating applied to one of the interior glass surfaces (typically surface 2) that reflects long-wave infrared heat while allowing visible light to pass through. Low-E coatings can halve the U-value of clear double glazing and improve thermal performance by up to 16% when combined with argon gas fill.
Gas Fill: The sealed cavity between glass panes is filled with argon or krypton gas instead of air. These noble gases have lower thermal conductivity than air, further reducing heat transfer. When 90% argon gas fill is used in a low-E IGU, the U-value can be improved by up to 16%.
Double Glazing Glass Configurations
KINGSTAR BUILDING GLASS offers double glazing glass in multiple configurations to meet different project requirements:
| Configuration | Composition | Typical U-Value | Best For |
|---|---|---|---|
| Clear IGU (air fill) | 6mm + 12mm air + 6mm | 2.8 W/m²K | Standard glazing, budget projects |
| Low-E IGU (argon fill) | 6mm + 12mm argon + 6mm | 1.4-1.8 W/m²K | Energy-efficient buildings |
| Low-E IGU (double silver) | 6mm + 12-16mm argon + 6mm | 1.0-1.3 W/m²K | Solar control, warm climates |
| Low-E IGU (triple silver) | 6mm + 12-16mm argon + 6mm | 0.79-1.0 W/m²K | Premium energy performance |
| Tempered IGU | Tempered glass + spacer + tempered glass | Varies | Safety-critical applications |
| Laminated IGU | Laminated glass + spacer + clear/tempered glass | Varies | Security, acoustic performance |
Key Performance Metrics
The performance of double glazing glass is measured by three key metrics:
- U-Value (U-factor): Measures the rate of heat transfer through the glass unit. Lower U-value means better thermal insulation. Double glazing with low-E coating and argon fill can achieve U-values as low as 1.0 W/m²K.
- SHGC (Solar Heat Gain Coefficient): Measures how much solar radiation passes through the glass. Lower SHGC provides better solar control. Double glazing SHGC values range from 0.20 to 0.70 depending on coatings.
- VLT (Visible Light Transmittance): Measures the percentage of visible light passing through the glass. Double glazing VLT ranges from 40% to 81% depending on glass type and coatings.
Performance Data
Typical Performance Values for Double Glazing Glass Units
| Configuration | VLT | SHGC | U-Value (W/m²K) | Typical Application |
|---|---|---|---|---|
| Clear IGU (air filled) | 81% | 0.68 | 2.8 | Standard glazing |
| Low-E IGU (single silver, argon) | 70-78% | 0.35-0.50 | 1.4-1.8 | Energy-efficient buildings |
| Low-E IGU (double silver, argon) | 49-64% | 0.23-0.40 | 1.0-1.3 | Solar control, warm climates |
| Low-E IGU (triple silver, argon) | 59-64% | 0.24-0.28 | 0.79-1.0 | Premium energy performance |
Based on 6mm glass + 12-16mm argon-filled cavity + 6mm glass configuration. Performance values are typical and may vary by specific product and configuration.
Comparative Performance: Double Glazing vs. Single Glazing
| Performance Metric | Single Glazing | Double Glazing (Clear) | Double Glazing (Low-E + Argon) |
|---|---|---|---|
| U-Value (W/m²K) | 5.8 | 2.8 | 1.0-1.8 |
| Heat Loss Reduction | Baseline | ~50% reduction | 70-85% reduction |
| Condensation Resistance | Low | Moderate | High |
Key Features
- Superior thermal insulation: Dual-pane construction with low-E coatings and gas fills reduces heat transfer, lowering heating and cooling costs.
- Solar control: Low-E and solar control coatings reflect solar heat, reducing cooling loads and improving occupant comfort.
- High visible light transmission: Maintains natural daylight while controlling heat gain.
- Condensation resistance: Warm edge spacers and insulating design reduce interior condensation.
- Acoustic insulation: Dual-pane construction provides significant sound reduction.
- UV protection: Low-E coatings reduce UV transmission, protecting interiors from fading.
- Design versatility: Available in clear, low-iron, and tinted substrates.
- Safety options: Heat-strengthened or fully tempered glass available.
Technical Specifications
| Parameter | Specification |
|---|---|
| Glass Type | Float Glass, Low-Iron Glass, Tinted Glass |
| Glass Thickness (Each Pane) | 4mm, 5mm, 6mm, 8mm, 10mm, 12mm |
| Total IGU Thickness | 16mm to 44mm (depending on glass and spacer thickness) |
| Maximum Panel Size | Up to 3300mm × 6000mm |
| Spacer Types | Aluminum (standard), Warm-Edge (stainless steel, TPS, or composite) |
| Spacer Thickness | 6mm, 9mm, 12mm, 15mm, 20mm |
| Gas Fill | Air, Argon (90% + 10% air), Krypton |
| Low-E Coating Position | Surface 2 (recommended for double glazing) |
| Low-E Coating Types | Single Silver, Double Silver, Triple Silver |
| Glass Options | Clear, Ultra-Clear Low-Iron, Grey, Bronze, Green, Blue |
| Safety Options | Heat-Strengthened, Fully Tempered (EN 12150), Laminated |
| Edge Finishing | Flat Polish, Pencil Polish, Beveled Edge |
| Sealant System | Butyl primary seal + Polysulfide or Structural Silicone secondary seal |
| Standards Compliance | EN 1279 (insulating glass units), EN 1096 (coated glass), EN 673 (U-value calculation), ASTM E2190 |
| Certifications | ISO 9001, CE |
| Lead Time | 10 to 25 days after order confirmation |
| Packaging | Protective film, edge protectors, interleaving paper, seaworthy wooden crates |
Standards and Code Compliance
KINGSTAR BUILDING GLASS Double Glazing Glass complies with major international building codes and standards:
- EN 1279: Glass in building — Insulating glass units
- EN 1096: Glass in building — Coated glass
- EN 673: Glass in building — Determination of thermal transmittance
- EN 12150: Thermally toughened soda lime silicate safety glass
- ASTM E2190: Standard Specification for Insulating Glass Unit Performance and Evaluation
- IBC (International Building Code): Energy efficiency and safety glazing requirements
Applications
Exterior Architectural Applications:
- Building facades and curtain walls
- Windows and doors
- Skylights and overhead glazing
- Atriums and interior courtyards
- Storefronts and commercial glazing
Commercial Buildings:
- Office towers and corporate headquarters
- Hotels and hospitality venues
- Shopping centers and retail stores
- Healthcare facilities
- Educational institutions
Residential Applications:
- Windows and sliding glass doors
- Home extensions and conservatories
- Residential skylights
Specialty Applications:
- High-rise building glazing
- Soundproof glazing for urban environments
- Heritage building renovations
Why Choose KINGSTAR BUILDING GLASS Double Glazing Glass?
- Superior thermal performance: Achieves U-values as low as 1.0 W/m²K with low-E coatings and argon gas fill.
- Energy savings: Reduces heating and cooling energy consumption, lowering operational costs.
- Condensation resistance: Warm edge spacer technology reduces interior condensation risk.
- Acoustic insulation: Dual-pane construction provides significant noise reduction.
- Code compliant: Meets EN 1279, EN 1096, EN 673, and ASTM E2190 standards.
- Complete processing: Cutting, edge finishing, coating, and IGU assembly under one roof.
- Multiple coating options: Single silver, double silver, and triple silver low-E coatings available.
- Safety options: Heat-strengthened or fully tempered glass available.
- 10 years of industry expertise: With a decade of dedicated experience in glass manufacturing and export, KINGSTAR BUILDING GLASS has delivered double glazing solutions to projects across North America, Europe, the Middle East, and Southeast Asia.
- Quality assurance: Strict quality control from raw material selection to final packaging, ensuring consistent performance, precise dimensions, and reliable processing.
Ready to specify high-performance double glazing glass for your next building project? Share your requirements with our technical team for custom double glazing glass solutions. We will provide performance data, thermal calculations, coating recommendations, and a competitive quote tailored to your project requirements, backed by a decade of glass manufacturing expertise.
Frequently Asked Questions (FAQ)
Q1: What is the difference between double glazing glass and single glazing?
A: Double glazing glass consists of two panes of glass separated by a sealed air or gas-filled cavity, providing approximately twice the insulation value of a single pane window. Single glazing offers very poor insulation because glass is a good conductor of heat. Double glazing significantly reduces heat loss, improves energy efficiency, reduces condensation, and provides better acoustic insulation compared to single glazing.
Q2: What U-values and SHGC values can KINGSTAR BUILDING GLASS double glazing glass achieve?
A: KINGSTAR BUILDING GLASS double glazing glass achieves U-values as low as 1.0 W/m²K in configurations with low-E coatings and argon gas fill. SHGC values range from 0.23 to 0.50 depending on the coating type. Standard clear double glazing with air fill typically achieves a U-value of approximately 2.8 W/m²K. Performance can be tailored through coating selection, gas fill, and glass type.
Q3: What standards do KINGSTAR BUILDING GLASS double glazing glass products comply with?
A: KINGSTAR BUILDING GLASS double glazing glass complies with EN 1279 (insulating glass units), EN 1096 (coated glass), EN 673 (determination of thermal transmittance), and ASTM E2190 (Standard Specification for Insulating Glass Unit Performance and Evaluation). CE certification is available for building applications in the European market. The products are manufactured under ISO 9001 quality management systems.
Insulated glass is a glass assembly composed of two or more pieces of glass, evenly separated by effective support, sealed with a binder around the glass layer to form a dry gas space between the glass layers.Glass components can be made of clear glass, tinted glass, reflective glass, laminated glass, tempered glass, etc.according to customer's request.
Its excellent efficiency in solar heat insulation, greatly reduces cooling loads.
Dry air inside the enclosure renders the surface free from misting.
More excellent efficiency will be if fill in argon or other inert gases.rom misting.
Glass Thickness 3-19mm
Spacer Thickness 6A,9A,12A,16A,24A.etc
Spacer Material Aluminum, Stainless, Warm edge, TPS, 4SG
Size Min.200x300mm, Max.3300mmx13000mm, custom sizes
Glass options Low-E tempered glass, ultra clear glass, tinted glass, solar reflective glass etc
Kingstar Building glass: www.kingstar-glass.com
Kinstar Glassware (Professional Glassware & Kitchen Storage): www.kingstarliving.com
Kingstar Building glass:
Email: eric@kingstar-glass.com
Kingstar Glassware
(Professional Glassware & Kitchen Storage):
Email: info@kingstar-glass.com
Address: NO.101 SHENZHEN ROAD, QINGDAO, CHINA
© 2022 Qingdao Kingstar Glass Co., Ltd . All rights reserved Site Map | Technical Support:weidongli
Building glass:
Wechat/Whatsapp: 008618562697682
Email: eric@kingstar-glass.com
Glassware please visit: www.kingstarliving.com
Wechat/Whatsapp: 008615063091883
Email: info@kingstar-glass.com
Address: NO.101 SHENZHEN ROAD, QINGDAO, CHINA
© 2022 Qingdao Kingstar Glass Co., Ltd . All rights reserved Site Map
