Aluminium exterior door L124-1 made to order

L124-1 aluminium entrance door with exceptional thermal performance (Ud 0.85 W/m²K) and quadruple glazing. The 92 mm system depth with articulated 34 mm thermal break delivers premium energy efficiency and lasting durability.

The L124-1 exterior door represents premium performance for residential and commercial entrances demanding superior thermal efficiency and long-term durability. Its robust aluminium profile, with total system depth of 92 mm, is engineered to support substantial loads and maintain structural integrity across diverse climate conditions.

Advanced construction incorporates an articulated 34 mm thermal break — a structural technology that separates interior and exterior sections, effectively eliminating thermal bridges. The 3 mm exterior aluminium is treated for corrosion and weather resistance. Triple-layer EPDM sealing gaskets ensure perfect airtightness, protecting interiors from water intrusion, wind pressure, and air leakage.

The quadruple glazing — comprising 44.1 mm laminate panes with a 5 mm satin interlayer — achieves thermal transmittance of Ud 0.85 W/m²K, certified by ift Rosenheim laboratories. This translates to superior energy performance, significant reductions in heating and cooling loads, and consistent comfort year-round. The final leaf thickness of 92 mm provides both acoustic enhancement and tactile quality.

Available in standard sizes up to 1100×2300 mm, with single-leaf options extending to 1200×2500 mm, the L124-1 adapts seamlessly to varied architectural constraints. Greek manufacturing ensures rigorous quality control and precision finishing throughout.

Ideal for high-end residential projects, commercial buildings with strict energy codes, and renovations where maximum thermal performance meets discreet architectural presence.

Ud 0.85 W/m²K is an exceptional value for exterior doors, meaning minimal heat loss — approximately 15% lower than current standards. This performance comes from the quadruple glazing system and the articulated 34 mm thermal break, which blocks heat transfer effectively. In practical terms: noticeably lower heating and cooling bills, especially during winter months.

The system consists of two triplex glass panes (44.1 mm each), separated by a 5 mm Satinato film, creating two independent air chambers. This configuration not only triples thermal insulation but also absorbs low-frequency external noise — particularly effective protection in urban areas. Each triplex layer has a laminated plastic interlayer that dampens sound vibration across its thickness.

The standard maximum is 1100×2300 mm, but for a single leaf we can customize up to 1200×2500 mm according to your opening requirements. The profiles (frame and leaf) are always adapted to your masonry; exact width and height are determined during on-site measurements. Regardless of size, the system depth remains constant at 92 mm, guaranteeing the same thermal performance level.

The L124-1 profile adapts to wooden, aluminum, and PVC frames with variable thicknesses from 75 mm to 150 mm, depending on your wall. Installation requires professional measurement and mounting with shims and screws anchored in the masonry. The frame depth (80 mm) provides sufficient space for polyurethane foam sealing and decorative finishing. The process takes 2–3 hours, and proper insulation of the side gaps is essential to maintain the promised thermal coefficient.

The 3 mm aluminum used in the L124-1 profile is anodized and corrosion-resistant, even in marine climates. Maintenance consists of cleaning with water and neutral detergent, 2–3 times per year. The EPDM gaskets (3 multi-point strips) require periodic visual inspection and replacement only if they show cracks or loss of elasticity — a rare operation, typically after 15–20 years. The main risk is neglecting the side gaps after installation; if not properly sealed, infiltration can damage the frame, not the aluminum itself.

The available technical data does not specify RC (anti-burglary) classes, but the 92 mm leaf thickness, 3 mm aluminum, and quadruple glazing system provide solid structural resistance. Final security depends on the hardware (hidden hinges, quality cylinder), which is specified at order. We recommend consulting with the installation specialist to select hardware with RC2 or RC3 certification, depending on your location and local risk level.