Triple-Pane Insulated Glazing Units (Low-E & Solar Control)
Romanian Technical Denomination: Geam Termoizolant Tripan cu Emisie Redusă (Low-E)
Hermetically sealed multi-pane glass assembly filled with 90% Argon gas and microscopic metallic Low-E coatings, delivering low U-values for nZEB compliance.
LEVEL 1: QUICK UNDERSTANDING (EXECUTIVE SUMMARY)
INVESTORS & DEVELOPERSHermetically sealed multi-pane glass assembly filled with 90% Argon gas and microscopic metallic Low-E coatings, delivering low U-values for nZEB compliance.
Exterior residential windows and terrace sliding doors meeting Romanian nZEB requirements, Curtain wall glazing in commercial office buildings
01. TECHNICAL OVERVIEW & ENGINEERING CHARACTERISTICS
Insulated Glazing Units (IGUs / geam tripan) manufactured per SR EN 1279-1:2018. Triple-pane configurations (e.g., 4mm Solar Control + 16mm Argon + 4mm Float + 16mm Argon + 4mm Low-E) achieve center-of-glass Ug-values down to 0.5 - 0.6 W/(m²·K). Magnetron sputtering applies sub-nanometer metallic silver layers that reflect infrared heat back into the interior while transmitting visible daylight.
02. CONSTITUENTS & MANUFACTURING SPECIFICATION
- ▸Float glass sheets: tempered (securizat SR EN 12150) or laminated safety glass (SR EN ISO 12543)
- ▸Low-E and Solar Control magnetron coatings
- ▸Warm-edge composite spacer bars (TGI / Swisspacer) with molecular sieve desiccant
- ▸Dual seal: Polyisobutylene primary seal + Polysulfide/Silicone secondary structural seal, filled with 90% Argon gas
✓ ADVANTAGES & STRENGTHS
- •Drastically cuts building envelope winter heat losses by up to 70% compared to legacy double glazing
- •Warm-edge spacers eliminate edge condensation and mold risk at glass perimeter
- •Solar control coatings mitigate interior overheating during summer peak hours
- •Safety laminated panes prevent injury from accidental glass breakage
⚠ LIMITATIONS & RISK FACTORS
- •Substantial weight (~30 kg/m² for 3x4mm glass), requiring heavy-duty window profile hardware and hinges
- •Thermal stress breakage risk if glass is partially shaded without edge grinding or heat strengthening
- •Argon gas will slowly dissipate over decades if secondary edge seals are compromised