Low-E Argon Insulated Glass

Low-E Argon Insulated Glass from Trent Glass combines a microscopic metallic oxide coating (low-emissivity) with an argon-filled cavity to dramatically reduce heat loss through glazing. The coating reflects long-wave infrared radiation back into the building in winter and reduces solar gain in summer, while argon (denser than air) slows convective heat transfer within the cavity.

Manufactured with soft-coat (sputtered) Low-E glass to BS EN 1096 and assembled as sealed IGUs to BS EN 1279, these units are the specification standard for Building Regulations Part L and Passive House projects.

Key Features

• Ultra-Low U-Value — Down to 1.0 W/m²K (single Low-E) or 0.7 W/m²K (double Low-E triple)
• Solar Control — G-value tunable from 0.30–0.60 depending on coating
• Soft-Coat Low-E — Superior thermal performance vs hard-coat (pyrolytic)
• Argon 90% Fill — Measurable and certifiable per EN 1279-3
• Warm-Edge Spacer — Minimises edge cold-bridging
• UV Protection — Blocks up to 75% UV, reducing interior fading

Ideal Applications

• Part L compliant new-build residential
• Passive House and low-energy buildings
• Commercial office curtain walling
• Listed building retrofit (slim double-glazed variants)
• North-facing elevations (heat retention priority)
• Buildings targeting BREEAM or LEED certification

Technical Specifications