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KINGSTAR GLASS
Dark Grey Float Glass | Body-Tinted Heat-Absorbing Architectural Glass from KINGSTAR BUILDING GLASS
KINGSTAR BUILDING GLASS Dark Grey Float Glass is a premium body-tinted architectural glass created by adding carefully formulated coloring agents during the float glass manufacturing process. The result is a uniform, deep grey color throughout the entire glass thickness—with color intensity that naturally deepens as thickness increases. Highly prized by architects and designers for its unique deep grey, nearly black appearance, this glass delivers exceptional solar control performance while addi
What is Dark Grey Float Glass?
Dark grey float glass is a body-tinted soda-lime silicate glass produced by adding metal oxides to the glass batch during the float manufacturing process. Unlike surface-coated glass, the color permeates the entire glass thickness—ensuring that the aesthetic and solar control properties remain consistent even after cutting, edging, or processing. The dark grey tint provides superior glare reduction and heat absorption compared to standard grey float glass, making it a preferred choice for projects requiring maximum solar control without compromising on design sophistication.
The glass is produced in compliance with EN 572-1, EN 572-2, and EN 572-9 standards, and is CE-marked for use in building applications. KINGSTAR BUILDING GLASS dark grey float glass is available in a full range of thicknesses and can be processed into tempered glass, laminated glass, insulating glass units, bent glass, coated glass, and mirrors.
Key Features
- Body-Tinted Color: Uniform dark grey color throughout the glass thickness—color intensity increases with thickness
- Superior Solar Control: Absorbs 30% to 45% of incident solar heat, significantly reducing cooling loads
- Glare Reduction: Low visible light transmittance creates a comfortable, soothing indoor environment
- Heat Absorption: High solar energy absorption (up to 57% for 5mm) minimizes heat entry into buildings
- UV Protection: Reduces harmful ultraviolet ray penetration
- Design Versatility: Available in thicknesses from 3mm to 19mm with fully customizable dimensions
- Processing Compatible: Can be tempered, laminated, heat-strengthened, bent, coated, silvered, sandblasted, or acid-etched
- Environmental Certification: Cradle to Cradle Certified® Bronze, supporting LEED certification
Optical and Solar Performance
Performance Comparison by Thickness
| Thickness | Light Transmittance (VLT) | External Reflection | Solar Absorption | Direct Solar Transmission | Total Solar Transmission (SHGC) | Shading Coefficient | U-Value (W/m²K) |
|---|---|---|---|---|---|---|---|
| 4mm | 57% | 6% | 36% | 58% | 67% | 0.77 | 5.7 |
| 6mm | 9% - 44%* | 4% - 5% | 49% - 57% | 38% - 46% | 29% - 59%* | 0.29 - 0.68* | 5.6 - 5.7 |
*Performance varies by manufacturer and specific product formulation. 6mm Planibel Dark Grey: Lt 9%, Sf 29%, Lr 4%. 6mm Şişecam Dark Grey: Lt 44%, Sf 59%, Lr 5%.
Performance Comparison with Other Glass Types
Based on 6mm monolithic glass.
| Glass Type | Light Transmittance (VLT) | SHGC | U-Value (W/m²K) | Solar Control Performance |
|---|---|---|---|---|
| Clear Float | 88% | 0.81 | 5.8 | Low - minimal heat blockage |
| Grey Float | 44% | 0.61 | 5.8 | Moderate - reduced glare and heat |
| Dark Grey Float | 15% | 0.53 | 5.8 | High - maximum glare and heat control |
| Green Float | 77% | 0.62 | 5.8 | Moderate - solar control with higher light |
Dark grey float glass provides the lowest visible light transmittance (15%) and the lowest SHGC (0.53) among uncoated float glass options—delivering the highest level of solar control.
Technical Specifications
Applications
- Building Facades and Curtain Walls: Dark grey glass creates a striking, sophisticated exterior appearance while controlling solar heat gain
- Commercial Buildings: Office towers, shopping centers, hotels, and corporate headquarters
- Windows and Doors: Residential and commercial fenestration with glare control
- Skylights and Overhead Glazing: Solar control for roof glazing applications
- Balustrades and Railings: Designer balustrades with a contemporary dark aesthetic
- Interior Partitions and Shower Screens: Elegant dark grey partitions for modern interiors
- Furniture and Tabletops: Coffee tables, shelves, display cases, and decorative elements
- Home Appliances: Increasingly used in appliance design for a premium appearance
- Automotive: Car roofs and automotive glass applications
Why Choose KINGSTAR BUILDING GLASS Dark Grey Float Glass?
- Superior Solar Control: SHGC as low as 0.53 and VLT of 15% deliver the highest level of glare and heat reduction among uncoated float glass options
- Body-Tinted Durability: Color permeates the entire glass thickness—will not fade, wear, or peel over time
- Design Excellence: Unique deep grey, nearly black appearance highly prized by architects and designers
- Complete Processing Capabilities: Cutting, edging, tempering, laminating, IGU assembly, bending, and coating under one roof
- Full Thickness Range: Available from 3mm to 19mm—customizable to meet any project requirement
- International Standards Compliance: EN 572 certified and CE marked for building applications
- 10 Years of Industry Expertise: With a decade of dedicated experience in architectural glass manufacturing and export, KINGSTAR BUILDING GLASS has delivered dark grey float glass solutions to projects across North America, Europe, the Middle East, and Southeast Asia. Our technical team provides expert guidance on glass selection, processing compatibility, and installation requirements.
- Quality Assurance: Strict quality control from raw material selection to final packaging—consistent color, uniform thickness, and reliable processing.
Looking to make a bold architectural statement with superior solar control? Share your project requirements with our technical team for custom dark grey float glass solutions. We'll provide optical performance data, processing recommendations, and a competitive quote tailored to your specifications—backed by a decade of architectural glass expertise.
Frequently Asked Questions (FAQ)
Q1: What is the difference between dark grey float glass and standard grey float glass?
A: Dark grey float glass has a richer, deeper tint than standard grey float glass, resulting in significantly lower visible light transmittance (15% vs. 44% for standard grey) and a lower SHGC (0.53 vs. 0.61). This means dark grey float glass provides greater control over glare and heat entry. The color is achieved through a different chemical composition during manufacturing, with color intensity increasing as glass thickness increases. Dark grey glass is highly prized by designers for its unique deep grey, nearly black appearance.
Q2: What is the SHGC and visible light transmittance of dark grey float glass?
A: For 6mm dark grey float glass, the SHGC (Solar Heat Gain Coefficient) is approximately 0.53, and the visible light transmittance (VLT) is approximately 15%. Performance varies slightly by manufacturer and specific product formulation—for example, 6mm Planibel Dark Grey offers Lt 9%, Sf 29%, Lr 4%, while 6mm Şişecam Dark Grey offers Lt 44%, Sf 59%, Lr 5%. These values make dark grey float glass the highest-performing uncoated float glass option for solar control.
Q3: Can dark grey float glass be tempered or combined with other glass products?
A: Yes. KINGSTAR BUILDING GLASS dark grey float glass is fully compatible with tempering (EN 12150), laminating (EN ISO 12543), and insulating glass unit fabrication. It can also be heat-strengthened, bent, coated, silvered, sandblasted, or acid-etched. When combined with Low-E coatings or used in insulating glass units with argon gas fills, dark grey float glass can achieve even higher thermal performance while maintaining its distinctive aesthetic.
Tinted Glass is produced by the float process with the addition of small
quantities of metaloxides to color the normal clear glass mix. This coloration is achieved
through adding metaloxides at the smelting stage. Addition of color does not affect the
basic properties of the glass, even though visible light reflectance will be slightly higher
than clear glass.
tinted float glass can reduce transmission of the sun's harmful rays by up to
80% thus minimizing fading to interior furnishings .
The comprehensive range of soft natural colors compliments and harmonizes with
modern building materials to provide an exciting and different look to new or existing buildings .
Could be easily cut, bent, insulated, lami nated, lacquered, coated, tempered or heat
strengthened and in addition can be silk-screened.
Colors : Bronze, Dark Bronze, Euro Grey,Dark Grey,French Green,Dark Green, Ford Blue, Dark Blue,Pink, etc.
Thickness : 3mm, 4mm, 5mm, 5.5mm, 6mm, 8mm, 10mm and 12mm, etc.
Sizes: 1524x2134mm, 1650x2140mm, 2140x3300mm, 2250x3210mm, 2250x3300mm, 2440x3300mm and 2140x3660mm, etc
Tinted Glass is intended for universal applications where an attractive appearance or basics olar control properties are required:
Commercial and civil buildings .
Interior decoration and show windows.
Automotive window shield
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
