Aluminium exterior door L527-1 made to order

Aluminium exterior door L527-1 with slender profile and outstanding thermal insulation, designed for premium projects demanding both performance and contemporary elegance.

The L527-1 exterior door is a premium aluminium access solution crafted for high-end residences and commercial buildings. This model merges robust engineering with refined slender profiles, positioning itself at the top tier of contemporary exterior doors. Designed for seamless integration into modern architecture without compromise, it stands out through technical sophistication and meticulous attention to detail.

The L527-1 structure benefits from a total system depth of 92 mm, with the frame at 80 mm and leaves at 92 mm, milled from 3 mm aluminium. The profile incorporates an articulated 34 mm thermal break that fragments heat transfer and maximises insulative performance. The glazing is quadruple-qualified, with a 44.1 triplex / 5mm Satinato / 44.1 triplex configuration, guaranteeing optical clarity and reflection reduction. Sealing is achieved through three EPDM gaskets, ensuring lasting protection against weather infiltration.

Thermal performance is certified at 0.85 W/m²K (ift Rosenheim tested), placing it in the highest energy efficiency category. This value reflects the door's capacity to minimise heat loss and contribute meaningfully to reducing the building's energy consumption. The multipane glazing and strategically dimensioned thermal break ensure consistent comfort in cold seasons whilst maintaining good acoustic insulation. The solution is durable and engineered for long-term use under severe weather exposure.

Standard dimensions accommodate configurations up to 1100×2300 mm, with the possibility of extending a single leaf to 1200×2500 mm, offering flexibility in adapting to openings of varying sizes. The 92 mm profile depth allows integration with modern climate control systems and smart home technologies. The door can be customised according to architectural requirements, supporting RAL finishes and interior design preferences.

L527-1 is recommended for main entrances of single-family homes, office buildings, luxury residences and refined hospitality projects. Compatibility with contemporary minimalism through to reinterpreted traditional design makes it a versatile choice. Pairing with natural or laminated parquet flooring creates a harmonious transition between interior and exterior, reinforcing the quality perception of the entire space.

A Ud of 0.85 W/m²K represents premium thermal performance, certified by the ift Rosenheim laboratory, placing this door in the high-efficiency category. This is achieved through the 34 mm articulated thermal break and the specialized quadruple glazing system (44.1 triplex + Satinato glass). For comparison, standard exterior doors typically range between 1.2–1.5 W/m²K, so the L527-1 reduces thermal loss by approximately 40% more than conventional solutions.

The system consists of outer 44.1 triplex + 5 mm Satinato glass (anti-reflective) + inner 44.1 triplex, creating three layers of insulation that combine extreme thermal protection with acoustic control and privacy. Satinato glass reduces unwanted reflections and delivers a premium appearance with minimal light glare. This configuration traps insulating air between panes, functioning as a multi-chamber thermal barrier.

Standard maximum dimensions are 1100×2300 mm, with single-leaf configurations reaching up to 1200×2500 mm. The L527-1 model is engineered for custom ordering—you can adjust width and height to match your exact opening and frame requirements. We recommend consulting our design team to ensure compatibility with your existing masonry and window systems.

The door features 3 strategically positioned EPDM gaskets that create a multi-point sealing barrier around the entire frame perimeter. The total system depth of 92 mm includes an integrated threshold that prevents water runoff and enables controlled drainage. The combination of articulated profile design and triple gaskets ensures compliance with European sealing standards and long-term durability under harsh weather conditions.

The frame and leaf are constructed from extruded aluminum profile at 3 mm thickness, a premium choice delivering maximum rigidity without excess weight. This thickness is standard for European luxury doors and guarantees durability over 20+ years under direct weather exposure. Aluminum enables anodized or painted finishes, elegant slim-line design (the L527 profile is recognized for refined proportions), and superior corrosion resistance versus steel or standard MDF.

The 92 mm system depth is engineered to fit most standard European frame configurations (brick, concrete, stone). The 80 mm frame depth allows secure anchoring in masonry up to 300 mm thick. For installation on non-uniform walls or external thermal insulation systems (EPS/mineral wool), we recommend specialized frame adapters. Installation requires a qualified team following European fastening standards and perimeter sealing protocols.