In today’s construction world, balancing energy performance, aesthetics, and cost is critical. Triple glazing has long been considered the benchmark for high-performance windows, but its bulk, weight, and installation challenges often create trade-offs for architects, builders, and homeowners. Vacuum Insulating Glass (VIG) from HaanGlas offers a powerful alternative: achieving comparable or superior insulation performance at less than half the thickness and weight of triple glazing.
The Performance Advantage of VIG
According to HaanGlas VIG product data, our units achieve U-values as low as 0.49 W/m²·K, rivaling or outperforming standard triple-pane glazing, which typically falls between 0.6–0.8 W/m²·K. This remarkable insulation level is made possible by three innovations:
A vacuum cavity only 0.1–0.2 mm wide, eliminating heat conduction and convection.
Micro-spacers that support the panes without visible distortion.
Advanced edge sealing with a lifespan exceeding 25 years.
With these design breakthroughs, HaanGlas VIG offers performance equal to triple glazing while maintaining a thickness of just 8.3–10 mm, compared to 32–44 mm for conventional triple glass.
Slim, Light, and Strong
Weight is a major consideration for both façade contractors and window manufacturers. A typical triple-glazed IGU weighs around 30–35 kg/m², while HaanGlas VIG weighs only 20 kg/m². This reduction means:
Easier handling during manufacturing and installation.
Lower structural load requirements for frames and curtain walls.
Compatibility with existing frames, making VIG ideal for retrofit applications.
By cutting the glass unit weight by nearly 40%, VIG reduces costs across logistics, installation labor, and supporting materials.
Enabling Heritage Retrofits
Heritage and historic buildings often cannot accommodate the depth and weight of triple glazing. With its slim profile, HaanGlas Heritage VIG allows architects to preserve original frames while upgrading thermal and acoustic comfort. In projects across Europe and North America, owners have achieved 80% reductions in heat loss without altering visible façades.
Green Building Alignment
High-performance glazing is central to green building certifications like LEED, Passive House, and WELL. HaanGlas VIG supports compliance by combining:
Ultra-low U-values.
VIG Acoustic insulation of up to 39 dB.
High visible light transmittance (≥70%).
With thinner profiles and lighter loads, VIG also reduces the embodied carbon of frames, making it a smarter choice for sustainable construction.
Proven Durability
Concerns about longevity are often raised when comparing VIG to traditional IGUs. At HaanGlas testing labs, products undergo extreme weather simulations, thermal cycling, and accelerated aging. Results confirm a lifespan of over 25 years, comparable to the best triple-glazed units.
Cost and ROI
While initial costs for VIG may exceed double glazing, they are often lower than or comparable to triple glazing when full project costs are considered. Builders save on:
Reduced structural reinforcement.
Lower freight and handling costs.
Faster installation times.
Conclusion
VIG is no longer the future—it’s the present. With comparable insulation to triple glazing at half the thickness and weight, HaanGlas VIG is reshaping energy-efficient building design. From heritage retrofits to cutting-edge green buildings, VIG delivers the performance, design flexibility, and ROI today’s projects demand.
