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KINGSTAR GLASS
Low-E Glass Wall | High-Performance Energy-Efficient Architectural Glazing System from KINGSTAR BUILDING GLASS
KINGSTAR BUILDING GLASS Low-E Glass Wall is a high-performance architectural glazing system that combines insulating glass units (IGUs) with advanced low-emissivity (low-E) coatings to deliver superior thermal insulation, solar control, and energy efficiency for modern building envelopes. The microscopically thin, transparent low-E coating—typically applied to surface 2 of the IGU—reflects long-wave infrared heat while allowing visible light to pass through. In winter, it reflects interior heat
What is a Low-E Glass Wall?
A low-E glass wall is a high-performance glazing system constructed from insulating glass units (IGUs) that incorporate a low-emissivity coating on one or more glass surfaces. Low-E (low-emissivity) glass features a microscopically thin, transparent metallic or metal oxide coating that reflects long-wave infrared heat while allowing visible light to pass through.
Low-E glass walls combine three key technologies:
Low-E Coating: A microscopically thin, transparent coating applied to one of the interior surfaces of the IGU (typically surface 2 or 3) that reflects long-wave infrared heat while allowing visible light to pass through. In winter, it reflects interior heat back into the building; in summer, it reflects exterior solar heat away. Low-E glass can reduce solar radiation transmittance to only 45.31% of that of ordinary glass, lowering peak indoor temperatures by 6-7°C.
Insulating Air Space: The sealed space between glass panes, typically 6mm to 20mm, filled with air, argon, or krypton gas. The gas fill reduces conductive and convective heat transfer, improving thermal insulation.
Dual-Pane or Triple-Pane Construction: Two or three panes of glass separated by insulating air spaces, providing thermal resistance significantly superior to single glazing.
Low-E Coating Types
| Coating Type | Description | Key Characteristics | Best For |
|---|---|---|---|
| Single Silver (Soft Coat) | One silver layer applied in vacuum chamber | Standard performance, good balance of insulation and solar control | General energy-efficient buildings |
| Double Silver (Soft Coat) | Two silver layers for enhanced performance | Lower SHGC, higher selectivity, superior solar control | Warm climates, solar control applications |
| Triple Silver (Soft Coat) | Three silver layers for maximum performance | Lowest U-values and SHGC, highest VLT ratios | Premium energy-efficient projects |
| Quad Silver (Soft Coat) | Four silver layers for ultimate performance | World's first quad-silver coating, maximum solar control | High-performance sustainable buildings |
| Hard Coat (Pyrolytic) | Applied during glass manufacturing | More durable, can be used as single pane, lower performance | Warm climates, single-glazed applications |
Performance Parameters
The effectiveness of low-E glass walls is measured by three key metrics:
- U-Value (U-factor): Measures heat transfer rate. Lower U-value means better insulation. Low-E glass walls with argon gas fill can achieve U-values as low as 1.0 W/m²K.
- SHGC (Solar Heat Gain Coefficient): Measures how much solar radiation passes through. Lower SHGC provides better solar control. Advanced low-E coatings can achieve SHGC values as low as 0.23.
- VLT (Visible Light Transmittance): Measures the percentage of visible light passing through the glass. High-performance low-E glass can achieve VLT of 64% or higher while maintaining low SHGC.
Performance Data
Typical Performance Values for Low-E Glass Walls
| Configuration | VLT | SHGC | U-Value (W/m²K) | Typical Application |
|---|---|---|---|---|
| Clear IGU (uncoated) | 81% | 0.68 | 2.8 | Standard glazing |
| Single Silver Low-E IGU (argon) | 70-78% | 0.35-0.50 | 1.4-1.8 | Energy-efficient buildings |
| Double Silver Low-E IGU (argon) | 49-64% | 0.23-0.40 | 1.0-1.3 | Solar control, warm climates |
| Triple Silver Low-E IGU (argon) | 59-64% | 0.24-0.28 | 0.79-1.0 | Premium energy performance |
| Quad Silver Low-E IGU (argon) | 51% | 0.23 | 0.85 or lower | Maximum solar control |
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: Low-E Glass vs. Standard Glass
| Performance Metric | Standard Glass | Low-E Glass Wall | Improvement |
|---|---|---|---|
| Solar Radiation Transmittance | 100% baseline | 45.31% of standard | 54.7% reduction |
| Peak Indoor Temperature | Baseline | 6-7°C lower | Significant cooling load reduction |
| Thermal Insulation | Standard | Up to 3.75x better | Up to 75% improvement |
Key Features
- Superior thermal insulation: Low-E coatings and argon gas fills reduce heat transfer, lowering heating and cooling costs.
- Solar control: Reflects solar heat away from the building, reducing cooling loads and improving occupant comfort.
- High visible light transmission: Maintains natural daylight while controlling heat gain.
- UV protection: Low-E coatings reduce UV transmission, protecting interiors from fading.
- Condensation resistance: Warm edge spacers and insulating design reduce interior condensation.
- Acoustic insulation: Dual-pane or triple-pane construction provides sound reduction.
- Design versatility: Available in clear, low-iron, and tinted substrates.
- Safety options: Heat-strengthened or fully tempered glass available.
- Energy cost savings: Reduces heating demand by up to 61.4% compared to typical walls.
Technical Specifications
Applications
Exterior Architectural Applications:
- Curtain walls and building facades
- Storefronts and commercial windows
- Atriums and skylights
- High-rise building glazing
- Spandrel glass panels
Commercial Buildings:
- Office towers and corporate headquarters
- Hotels and hospitality venues
- Retail stores and shopping centers
- Healthcare facilities
- Educational institutions
Residential Applications:
- Large windows and sliding glass doors
- Home extensions and sunrooms
- Conservatories
Standards and Code Compliance
KINGSTAR BUILDING GLASS Low-E Glass Walls comply with major international building codes and standards:
- EN 1279: Insulating glass units - Product standard
- EN 1096: Coated glass - Product standard
- 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
Why Choose KINGSTAR BUILDING GLASS Low-E Glass Wall?
- Superior thermal performance: Achieves U-values as low as 1.0 W/m²K in double glazed configurations.
- Solar control excellence: SHGC values as low as 0.23 with advanced coatings.
- Energy savings: Reduces heating and cooling energy consumption, lowering operational costs.
- Condensation resistance: Warm edge spacer technology reduces interior condensation risk.
- 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, triple silver, and quad silver 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 low-E glass wall 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 low-E glass walls for your next architectural project? Share your requirements with our technical team for custom low-E glass wall 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 low-E glass and standard glass for walls?
A: Low-E glass features a microscopically thin, transparent coating that reflects long-wave infrared heat while allowing visible light to pass through. Standard glass does not have this coating. Low-E glass walls achieve significantly lower U-values (as low as 1.0 W/m²K) compared to standard glass (typically 2.8 W/m²K). Studies show that solar radiation transmittance of low-E glass is only 45.31% of that of ordinary glass, reducing peak indoor temperatures by 6-7°C. Low-E glass walls also provide UV protection and reduce condensation risk.
Q2: What U-values and SHGC values can KINGSTAR BUILDING GLASS low-E glass walls achieve?
A: KINGSTAR BUILDING GLASS low-E glass walls achieve U-values as low as 1.0 W/m²K in double glazed configurations with argon gas fill. Triple glazed configurations with advanced coatings can achieve even lower U-values. SHGC values range from 0.23 to 0.50 depending on the coating type—double silver, triple silver, and quad silver coatings provide the lowest SHGC for maximum solar control. Visible light transmittance ranges from 49% to 78% depending on the specific coating and glass combination.
Q3: What standards do KINGSTAR BUILDING GLASS low-E glass walls comply with?
A: KINGSTAR BUILDING GLASS low-E glass walls comply with EN 1279 (insulating glass units), EN 1096 (coated glass), EN 673 (glass in building - 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
