Warm Edge Sealing Technology
TPS/4SG Insulated Glass
Next-generation insulated glass with TPS (Thermo Plastic Spacer) and 4SG (4-Side Gas) technology that eliminates traditional aluminum spacer bars, reducing thermal bridging by up to 70% and extending unit lifespan to 25+ years.
Architectural Glass Catalogue—Full specifications, configurations, and technical data
The Challenge
Why This Product Exists
Traditional insulated glass units fail at the edge seal — the weakest point where condensation forms, gas escapes, and energy efficiency degrades. Within 10-15 years, conventional IGUs lose up to 40% of their insulating capacity, forcing costly replacements and compromising building performance.
Technical Data
Specifications
Edge Seal Technology
TPS/4SG Warm Edge
Thermal Improvement
Up to 70% vs. aluminum spacer
Gas Retention
99.5% after 25 years
Psi Value (Edge)
≤ 0.032 W/(m·K)
Max Unit Size
3,300 × 6,000 mm
Glass Thickness Range
4mm – 19mm per lite
Where It's Used
Applications
High-Rise Curtain Walls
Superior edge performance for demanding facade applications
Passive House Projects
Meets stringent Passivhaus thermal requirements
Cold Climate Buildings
Eliminates edge condensation in extreme temperatures
Energy-Retrofit Projects
Upgrade existing facades with next-gen IGU technology
Differentiators
Key Features
Global Compliance
Certifications by Region
North America
- ASTM C1048
- ASTM E2190
- ANSI Z97.1
- CPSC 16 CFR 1201
- IGCC/IGMA
Europe
- EN 12150
- EN 14449
- EN 1279
- CE Marking
- EN 572
Middle East
- GSO Standards
- Dubai Municipality Code
- Estidama
- SASO
Asia-Pacific
- AS/NZS 2208
- AS 1288
- JIS R3206
- GB 15763 (China)
Latin America
- NTC (Colombia)
- IRAM (Argentina)
- NOM (Mexico)
- ABNT NBR (Brazil)
Common Questions
Frequently Asked Questions
TPS (Thermo Plastic Spacer) is a flexible, warm-edge sealant applied robotically around the glass perimeter, eliminating rigid aluminum spacer bars. This reduces thermal bridging at the edge by up to 70%, prevents condensation, and extends unit life to 25+ years.
Yes. TPS/4SG technology is compatible with all glass types including Low-E, tempered, laminated, and tinted glass. Combining TPS with Low-E coatings maximizes both edge and center-of-glass thermal performance.
Our production line supports TPS/4SG insulated glass units up to 3,300 × 6,000 mm, suitable for large-format curtain wall and facade applications.
Yes, when combined with laminated glass configurations, TPS/4SG units meet Miami-Dade NOA and Florida Building Code requirements for impact resistance.
We offer Argon (standard) and Krypton (premium) gas fills. Argon provides excellent cost-performance balance, while Krypton offers superior insulation for ultra-high-performance applications.
Explore Our Full Product Range
Will Enterprise manufactures across 4 integrated product verticals — all from our facilities in Shandong, China.
Need Technical Support?
Our engineering team can help you specify the right product for your project requirements, local building codes, and performance targets.