VC GLASS
VC Vacuum Insulated Glass — High-Efficiency Thermal Insulation Glass for Extreme EnvironmentsThe Most Thermally Efficient Glass You Can SpecifyCity Star Glass is proud to present our VC Glass series — premium vacuum insulated glass engineered for buildings that demand the absolute highest thermal
Product Details
VC Vacuum Insulated Glass — High-Efficiency Thermal Insulation Glass for Extreme Environments
The Most Thermally Efficient Glass You Can Specify
City Star Glass is proud to present our VC Glass series — premium vacuum insulated glass engineered for buildings that demand the absolute highest thermal performance. With heat insulation of 95% and insulating efficiency of 90%, VC Glass is a game-changer for passive houses, sunrooms, research facilities, and buildings in extremely cold climates.
Unlike standard insulated glass units (IGUs) that rely on an air or argon gas cavity, VC Glass uses a near-perfect vacuum between two panes of tempered glass — eliminating conductive and convective heat transfer almost entirely. The result: a glass panel as thin as 5mm + 0.3mm vacuum + 5mm Low-E that delivers thermal performance equivalent to a 1-meter-thick brick wall.
How Vacuum Glass Works
The VC Glass construction is elegant in its simplicity:
Tempered Glass (outer pane) — structural safety layer
Low-E film coating — reflects infrared heat while allowing visible light through
Micro-support pillars — tiny spacers that maintain the vacuum gap against atmospheric pressure
Vacuum cavity (0.3mm) — a near-perfect vacuum that eliminates heat conduction and convection
Getter material — absorbs residual gases over the product's lifetime, maintaining the vacuum
Edge sealing material — hermetically seals the vacuum cavity for long-term performance
Tempered Glass (inner pane) — second structural safety layer
Because there is no gas inside the cavity, there is no air to conduct heat or carry sound. This is what gives VC Glass its extraordinary thermal and acoustic performance — far beyond what conventional double or triple glazing can achieve.
Key Performance Features
More Secure
The surface stress across the VC Glass pane exceeds 90MPa, and the wind pressure resistance reaches +7200Pa. Both glass plies are tempered safety glass, meeting building code requirements for exterior glazing in high-wind and seismic regions.
Size Worry Free
A single VC Glass panel can reach up to 1.5m × 2.5m — large enough for most window, curtain wall, and sunroom applications. Standard sizes are 1500×2000mm, with maximum dimensions of 2000×3000mm available for project orders.
Sound Insulation
VC Glass delivers weighted sound insulation of 39dB. Because sound does not propagate through vacuum, the acoustic performance is based on the inherent properties of the glass rather than gas filling — meaning consistent noise reduction across a wide range of frequencies. Ideal for buildings near airports, highways, railway lines, and urban centers.
Works at Any Angle
Unlike gas-filled insulated units, VC Glass performance is not affected by the change in gas thermal conductivity when placed horizontally or at an angle. This makes it suitable for skylights, sloped glazing, overhead canopies, and pitched roof applications.
Anti-Condensation
There is no gas inside the VC Glass cavity, which means even when outdoor temperatures drop to -40°C, the inner surface will not condense or frost. This is a critical advantage for cold-climate buildings, ice rinks, refrigerated facilities, and any application where condensation causes maintenance issues or aesthetic problems.
Superior Thermal Insulation
VC Glass achieves a heat transfer coefficient (U-value) as low as 0.4 W/(m²·K) — significantly reducing energy loss and building energy consumption. The thermal insulation effect is equivalent to more than 1 meter of thick brick wall — that is 4 to 16 times more insulating than ordinary single glazing.
Long Service Life
The VC Glass is constructed from all-glass material, with internal support pillars and Low-E film, fully sealed with advanced edge technology. The vacuum layer is a permanently sealed hollow glass unit — designed to maintain its vacuum over decades of service, far outlasting standard gas-filled IGUs that gradually lose their gas fill.
Consistent Quality
Manufactured under ISO 9001:2015 quality system certification, with rigorous factory audits by Bosch Home Appliances to ensure every piece of VC Glass meets exacting standards. Every panel is also backed by PICC quality assurance insurance for added peace of mind.
Technical Specifications
| Parameter | Value |
|---|---|
| U-value (thermal transmittance) | 0.50 W/(m²·K) |
| Visible light transmittance | 75% |
| Sound insulation (Rw) | 39 dB |
| Standard size | 1500 × 2000mm |
| Maximum size | 2000 × 3000mm |
| Surface stress | ≥90MPa |
| Wind pressure resistance | +7200Pa |
| Condensation resistance | Down to -40°C outdoor |
| Construction | 5mm tempered + 0.3mm vacuum + 5mm Low-E |
The notation "5T" refers to 5mm clear float glass; "0.3V" refers to a 0.3mm vacuum layer; "5TL" refers to 5mm Low-E glass; "9A" refers to a 9mm air cavity; "0.76P" refers to a 0.76mm thick PVB interlayer.
Where VC Glass Excels
Sun Rooms & Conservatories
VC Glass is the perfect glazing for sunrooms and conservatories. In winter, it traps solar heat inside and prevents it from escaping — creating a comfortable, warm space without excessive heating costs. In summer, the Low-E coating reflects unwanted solar heat, keeping the space cool and reducing overheating.
Research Bases & Laboratories
Scientific research facilities, greenhouse laboratories, and controlled-environment agriculture facilities demand precise temperature stability. VC Glass maintains interior temperatures with minimal fluctuation — protecting sensitive experiments, plant specimens, and equipment from external temperature swings.
Extremely Cold Regions
For buildings in subarctic, alpine, or polar climates, VC Glass eliminates the need for triple glazing or thick curtain wall systems. Its anti-condensation performance down to -40°C means no frozen windows, no fogged glass, and no icy buildup on interior surfaces — critical for comfort and safety in extreme cold.
Passive Houses & Green Buildings
VC Glass helps achieve passive house certification standards with its ultra-low U-value. It contributes directly to LEED, BREEAM, and Green Star rating points by reducing heating and cooling energy demand dramatically.
Residential Windows & Doors
Upgrade residential windows to VC Glass for year-round comfort — quieter interiors, warmer winters, cooler summers, and no condensation on window panes. The slim profile also means more natural light and thinner sightlines compared to bulky triple-glazed alternatives.
Commercial Curtain Walls
High-performance office buildings and commercial facades benefit from VC Glass's thermal efficiency — reducing HVAC loads and creating comfortable interior conditions near the glass perimeter.
Why Vacuum Glass Beats Conventional Double Glazing
表格
| Feature | Standard Double Glazing | VC Vacuum Glass |
|---|---|---|
| U-value | ~2.8 W/(m²·K) | 0.4 W/(m²·K) |
| Sound insulation | ~30dB | 39dB |
| Condensation resistance | ~0°C outdoor | -40°C outdoor |
| Gas fill retention | Degrades over 10-15 years | Permanent vacuum seal |
| Angle tolerance | Gas convection affects performance | Unaffected by orientation |
| Thickness | 20-24mm total | 10.3mm total |
| Thermal advantage | Baseline | 4-16x better insulation |
VC Glass delivers superlative thermal performance in a fraction of the thickness — meaning slimmer sightlines, lighter structures, and easier installation in existing window openings.
Why Source from City Star Glass?
Complete glass manufacturing: Float glass, tempering, vacuum lamination, and export all under one roof.
Global export experience: 60+ countries served, 50 containers per month.
Warehouse network: Stock in Shahe, Qingdao, and Tianjin for fast dispatch.
Custom specifications: Different glass thicknesses, tempered options, curved panels, and custom sizes available.
Export-grade packaging: Wooden crates engineered for ocean freight worldwide.
Quality assurance: ISO 9001:2015 certified, PICC insured.
Request a Quote for Your Project
VC Vacuum Glass is available for project-based quotation. Contact our engineering team with your window sizes, climate zone, and performance requirements for a tailored recommendation.
We provide free samples, technical submittal documents, and worldwide shipping to your destination port.
City Star Glass — Engineering the World's Most Thermally Efficient Glass.
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