Kolbe Vacuum Insulated Glass (VIG): The Future of High-Performance Windows
Kolbe Windows & Doors has partnered with LuxWall, Inc. to offer vacuum insulating glass (VIG) options in select products, redefining what is possible when pursuing improved efficiency and optimal comfort through your choice of windows and doors.
The window industry continues to evolve, and one of the most significant advancements in recent years is Vacuum Insulated Glass (VIG). Kolbe now offers this cutting-edge technology, delivering exceptional thermal performance in an ultra-slim, fully tempered configuration.
If you are designing for energy efficiency, sustainability, or extreme climate performance, Kolbe’s Enthermal™ VIG options provide a new level of capability.
What Is Vacuum Insulated Glass?
Vacuum Insulated Glass uses a vacuum layer between panes of glass to dramatically reduce heat transfer. Unlike traditional double or triple pane units that rely on gas fills, VIG removes conductive heat transfer by eliminating air and gas between the panes.
The result is significantly improved insulation performance in a slimmer profile.
- Enthermal™ (R18)
- Enthermal™ PLUS (R21)
Enthermal™ R18 Performance
The Enthermal™ R18 configuration delivers:
- R18 Center of Glass insulation
- U-Factor of 0.056
- Solar Heat Gain Coefficient (SHGC) of 0.25
- Condensation Resistance Factor of 77
- 8mm slim profile
- 20-Year Product Warranty
- Fully tempered construction
This configuration provides up to 76% reduction in winter heat loss compared to traditional double pane insulated glass units. The slim 8mm design makes it ideal for projects where narrow sightlines and refined aesthetics are essential.
Enthermal™ PLUS R21 Performance
For projects requiring even greater thermal performance, Enthermal™ PLUS delivers:
- R21 Center of Glass insulation
- U-Factor as low as 0.048
- Solar Heat Gain Coefficient as low as 0.17
- Condensation Resistance Factor of 77
- 25mm slim profile design
- 10-Year Product Warranty
- Fully tempered construction
- 100% recyclable product
This option significantly reduces winter heat loss compared to triple pane insulated glass while maintaining a slimmer overall profile.
Why VIG Changes the Design Conversation
Slim Profiles
VIG allows designers to maintain clean architectural lines without sacrificing insulation performance. This makes it especially useful in modern minimalist designs and historic renovations where depth limitations exist.
Improved Condensation Resistance
With a Condensation Resistance Factor of 77, both R18 and R21 configurations perform exceptionally well in cold climates where interior condensation can be a concern.
Sound Performance
The R21 configuration offers STC ratings up to 39, while R18 offers 35+. This makes VIG an excellent option for projects that require both thermal and acoustic performance.
Sustainability
The R21 configuration is 100% recyclable and helps reduce long-term heating and cooling loads. By improving overall energy performance, Vacuum Insulated Glass contributes to more sustainable building design.
Performance Comparison
| Feature | Enthermal™ R18 | Enthermal™ PLUS R21 |
|---|---|---|
| Center of Glass R-Value | R18 | R21 |
| U-Factor | 0.056 | 0.048 |
| SHGC | 0.25 | 0.17 – 0.22 |
| Condensation Resistance | 77 | 77 |
| Profile Thickness | 8mm | 25mm |
Ideal Applications
- Custom luxury homes
- High-performance remodels
- Cold climate construction
- Projects targeting aggressive energy codes
- Urban builds requiring sound control
- Architectural designs with slim frame profiles
Kolbe’s Enthermal™ R18 and Enthermal™ PLUS R21 Vacuum Insulated Glass options represent a significant advancement in glazing technology. With high R-values, slim profiles, superior condensation resistance, and fully tempered durability, VIG bridges the gap between performance and design flexibility.
If you would like to learn more about Kolbe Vacuum Insulated Glass or explore how it can be integrated into your next project, contact us to discuss specifications and availability.
