English
10+20Ar+10 Low-E insulated curtain wall glass – ultra-heavy duty low-emissivity IGU engineered for mega-span facades, airport terminals, stadiums, and super-tall towers beyond 400m. 10mm tempered outer lite + 20mm argon cavity + 10mm tempered inner lite. Double or triple silver Low-E coating. U-value ~1.3 W/m²K (double silver) to ~1.1 W/m²K (triple silver), SHGC 0.15–0.30, VLT 42–58%. Jumbo size up to 9320×12000mm. Wind load capacity up to 6.0 kPa. ASTM E4090, EN 1899, IGCC certified. Request FOB quote.
10+20Ar+10 Low‑E Insulated Curtain Wall Glass | Ultra‑Heavy Duty Low‑E IGU for Mega‑Span Facades & Landmark Towers
Ultra‑Heavy Duty Low‑E Insulating Glass Unit – The Definitive Specification for Mega‑Span Facades, Airport Terminals, Stadiums & Super‑Tall Towers Beyond 400m
10+20Ar+10 Low‑E insulated curtain wall glass is the ultimate heavy‑duty IGU configuration for the most demanding curtain wall applications. It consists of:
💡 Why 10+20Ar+10 exists: The 10mm glass thickness provides 4.6x the bending stiffness of 6mm glass, while the 20mm cavity offers measurably better thermal and acoustic performance than 16mm cavities. This configuration is the engineering‑grade solution for landmark projects where failure is not an option — including the world's tallest towers, major international airports, and Olympic stadiums.
| Item | Specification |
|---|---|
| Configuration | 10+20Ar+10 |
| Overall Thickness | 40mm |
| Outer Lite | 10mm Tempered / Heat‑Strengthened |
| Inner Lite | 10mm Tempered / Heat‑Strengthened |
| Coating | Double Silver or Triple Silver Soft‑Coat Low‑E (MSVD) |
| Coating Surface | #2 (cold climate) or #3 (hot climate) |
| Cavity | 20mm sealed |
| Gas Fill | Argon ≥90% (Krypton optional) |
| Spacer | Warm Edge TPE / Swisspacer / Stainless Steel (structural grade) |
| Seal | Dual seal: PIB primary + Structural Silicone secondary |
| Desiccant | Molecular sieve ≥3200 mg/g (high‑capacity) |
| Parameter | Double Silver (Balanced) | Triple Silver (Balanced) | Triple Silver (Ultra‑Low SHGC) |
|---|---|---|---|
| U‑Value | ~1.3 W/m²K | ~1.1 W/m²K | ~1.1 W/m²K |
| SHGC | 0.26–0.30 | 0.18–0.23 | 0.15–0.18 |
| VLT | 51–58% | 49–55% | 39–47% |
| g‑value | 0.26–0.30 | 0.18–0.23 | 0.15–0.18 |
| UV Blockage | 92–96% | >98% | >98% |
| Acoustic (Rw) | ~37 dB | ~37 dB | ~37 dB |
| Max Size | 9300 × 11900 mm | 9280 × 11600 mm | 9260 × 11200 mm |
The 10mm glass thickness provides approximately 370% greater bending stiffness compared to 6mm glass (stiffness ∝ t³). This enables:
| Glass Thickness | Relative Stiffness | Safe Wind Load (4‑side support, 2100mm span) |
|---|---|---|
| 6mm | 1.0x | Up to 2.5 kPa |
| 8mm | 2.37x | Up to 4.0 kPa |
| 10mm | 4.62x | Up to 6.0 kPa For mega‑span facade panels (1500–2500mm wide), 10mm glass is the only practical solution to keep center‑of‑glass deflection within L/175 under extreme wind events. |
The 20mm cavity provides better thermal insulation than 16mm cavities — approximately 0.1 W/m²K improvement with the same coating. Combined with triple silver Low‑E, the U‑value reaches ~1.1 W/m²K, which is exceptional for double glazing and approaches the performance of some triple‑glazed units.
Triple silver Low‑E in the 10+20Ar+10 configuration can achieve SHGC as low as 0.15 — the lowest available in a standard double‑glazed IGU. This is critical for large‑area glazing in desert climates (Middle East, North Africa, Australia).
The 10mm glass mass provides ~37 dB Rw — a 4 dB improvement over 6+16Ar+6. This is essential for airport terminals, convention centers, and mixed‑use towers near transportation hubs.
With both panes at 10mm, this IGU provides inherent resistance to blast loads (GSA Level D/E achievable). When combined with SGP lamination on either or both panes, it meets the most stringent security and hurricane standards worldwide.
Our jumbo IGU capability extends 10+20Ar+10 to 9320 × 12100 mm — enabling facade panels of unprecedented size for landmark architecture.
10+20Ar+10 double or triple silver Low‑E is the premium vision glass specification for mega‑span facades. The 10mm glass provides structural confidence for large panel sizes, while the 20mm cavity and advanced coating deliver top‑tier energy performance.
Recommended specification:
For spandrel zones, the same 10+20Ar+10 Low‑E IGU is used with ceramic frit applied to the inner surface of the outer lite. The 10mm glass provides excellent thermal stability for the frit, reducing the risk of thermal stress fracture.
Spandrel specification additions:
✅ Best practice: Using the same 10+20Ar+10 Low‑E IGU for both vision and spandrel zones ensures consistent U‑value, SHGC, and facade appearance. Only the frit differs.
Our jumbo production capability allows 10+20Ar+10 Low‑E IGU to be manufactured in sizes unmatched in the industry.
| Parameter | Standard | Jumbo |
|---|---|---|
| Max Width | ≤2400 mm | ≤3320 mm |
| Max Height | ≤6000 mm | ≤12200 mm (extreme up to 16000 mm) |
| Max Area | ~14 m² | ~40 m² |
| Glass Thickness | 10mm | 10mm (both lites) |
| Wind Load Capacity | Up to 4.0 kPa | Up to 6.0 kPa (with proper frame design) |
| Coating Variant | Gas | Price Range (USD/m²) |
|---|---|---|
| Double Silver (balanced) | Argon | $48–66 |
| Double Silver (solar control) | Argon | $50–70 |
| Triple Silver (balanced) | Argon | $58–80 |
| Triple Silver (ultra‑low SHGC) | Argon | $62–86 |
| Triple Silver (balanced) | Krypton | $68–94 |
| Triple Silver (ultra‑low SHGC) | Krypton | $74–100 |
| Factor | Impact |
|---|---|
| Coating variant | Triple silver +15–25% vs. double silver |
| Gas fill | Krypton +15–25% vs. argon |
| Spacer type | Warm‑edge +5–10% vs. aluminum |
| Tempering | Included in base price |
| Laminating (one or both panes) | +$25–60/m² |
| Ceramic frit (spandrel) | +$8–15/m² |
| Quantity | FCL pricing available |
| Destination port | Affects logistics cost |
💡 Comparison with 8+16Ar+8: 10+20Ar+10 is typically 30–45% more expensive than 8+16Ar+8 due to the thicker glass, larger cavity, and specialized handling. This premium is justified only for projects where 8mm glass cannot meet structural or performance requirements.
Submit your project requirements for a competitive FOB quotation and performance analysis.
Required Information:
Q1: What is 10+20Ar+10 Low‑E insulated curtain wall glass?
It is an ultra‑heavy duty double‑glazed insulating glass unit with 10mm tempered outer and inner panes, a 20mm argon‑filled cavity, and a double or triple silver soft‑coat Low‑E coating. It is the strongest standard double‑glazed IGU available for curtain walls.
Q2: When should I specify 10+20Ar+10?
When building height exceeds 400m, wind loads exceed 4.0 kPa, glass spans exceed 2300mm, acoustic targets exceed Rw 36 dB, or when maximum structural safety margins are required for landmark projects.
Q3: What U‑value does 10+20Ar+10 achieve?
Double silver: ~1.3 W/m²K. Triple silver: ~1.1 W/m²K. With krypton fill: ~0.9 W/m²K.
Q4: What SHGC can I expect?
Double silver (balanced): 0.26–0.30. Triple silver (balanced): 0.18–0.23. Triple silver (ultra‑low): 0.15–0.18.
Q5: Which surface should the coating be on?
Q6: Can 10+20Ar+10 be used for spandrel glass?
Yes. Add ceramic frit to the outer lite for opacity. The thick glass provides excellent thermal stability for the frit.
Q7: What is the maximum size?
Up to 3320 × 12300 mm for standard 10mm panes. Larger sizes require engineering review.
Q8: What certifications do you provide?
ASTM E4290, EN 2899‑5, IGCC, CE, ISO 2981, CCC, SGS. Blast testing per GSA and BS EN 23123 available on request.
Q9: What is the lead time?
Standard sizes: 6–8 weeks. Jumbo sizes: 8–10 weeks. Laminated panes add 2–3 weeks.
Q10: How does 10+20Ar+10 compare to 8+16Ar+8?
10+20Ar+10 provides 1.95x greater bending stiffness than 8mm glass, ~2 dB better acoustic performance, and ~0.1 W/m²K better U‑value — at a 30–45% cost premium. Specify only when 8mm glass is structurally inadequate.
Subscribe To Our Newsletter To Get Our Update News!
Copy Right © 2026 Jumbo Glass Group
