If you follow the building industry, you have probably heard these terms in recent years:
Passive house, nearly zero-energy building, Three-Star Green Building, LEED certification, fourth-generation housing…
Behind these concepts is a global shift toward lower-carbon, more energy-efficient buildings.
China is also moving quickly. The General Code for Energy Efficiency and Renewable Energy Application in Buildings is now mandatory, and many cities have introduced incentives for nearly zero-energy buildings.
But many people overlook one key factor: whether these high-performance buildings meet their targets can depend heavily on one critical component—the energy efficiency of the glass.
- How Can VIG help Building Energy Efficiency?
More than 70% of building heat loss occurs through the building envelope—walls, roofs, doors, and windows.
Of that, glazed doors and windows account for 40%–50%.
Walls and insulation can be made thicker, but glass cannot. It must still admit daylight, its thickness is limited, and conventional technologies offer limited room for further thermal improvement.
This is why vacuum insulating glass has become a standard choice for high-performance buildings.
- The Value of SuperVIG® VIG in Green Buildings:Thermal Performance
Passive house standards place extremely strict limits on window U-values (thermal transmittance), typically requiring a whole-window U-value of ≤0.8 W/(m²·K).
SuperVIG® vacuum insulating glass can achieve a U-value of 0.4–0.6 W/(m²·K). Combined with a high-performance frame, it can fully meet passive house requirements.
By comparison:
- Standard insulating glass: U-value approximately 2.0–2.8 W/(m²·K)
- Low-E insulating glass: U-value approximately 1.4–1.8 W/(m²·K)
- SuperVIG® vacuum insulating glass: U-value 0.4–0.6 W/(m²·K)
This is not an incremental improvement. It is a major leap in performance.
- Energy Savings in Zero-Energy Buildings
Take a 1,000 m² office building as an example. Replacing standard insulating glass with SuperVIG® vacuum insulating glass can deliver:
- Annual energy savings: approximately 150,000–250,000 kWh (depending on climate zone)
- Annual CO₂ reduction: approximately 150–250 tonnes
- Total energy-saving value over 25 years: several million RMB
The choice of glass can shape a building’s carbon footprint for decades.
For architects and developers,
Green building is not a label or a PowerPoint presentation. It is the combined real-world performance of every component.
When you specify “vacuum insulating glass” on a drawing, you are choosing more than a material. You are making a commitment to building quality and environmental responsibility.
SuperVIG® is reliable support for that commitment.
SuperVIG® VIG
Purpose-Built for Green Buildings
