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.