Aluminium exterior door L435 made to order

Aluminium entrance door model L435 with exceptional thermal performance (Ud 0.85 W/m²K) and quadruple insulating glazing. Premium solution for high-efficiency building standards.

The L435 is a premium exterior entrance door designed for buildings requiring cutting-edge thermal insulation and durability across diverse climate conditions. Its aluminium profile system and robust construction position it at the top of the contemporary entrance door segment, delivering both technical excellence and realistic value for investors and private homeowners seeking long-term performance.

The system profile has a total depth of 92 mm, featuring 3 mm aluminium frames and an articulated thermal break of 34 mm that significantly reduces heat transmission. The quadruple glazing comprises three 44.1 triplex layers with a 5 mm satin glass core, delivering not only superior thermal insulation but also effective acoustic control. Three rows of EPDM gaskets ensure consistent airtightness against water infiltration and air leakage, even in high-wind zones and coastal environments.

The Ud value of 0.85 W/m²K (certified by ift Rosenheim) positions this door in passive house and near-zero energy building categories. This insulation level reduces annual energy costs and improves interior comfort by eliminating cold draughts and seasonal condensation. The system is engineered to handle typical mechanical loads of swing doors and maintains dimensional stability throughout annual climate cycles. The robust construction withstands repeated thermal stress without warping or seal degradation.

L435 is available in standard dimensions up to 1100×2300 mm for single openings, and up to 1200×2500 mm for single-leaf configurations, allowing adaptation to renovation projects and new builds alike. The system supports multiple handle finishes, closer options, and surface treatments, fully compliant with accessibility and safety requirements in residential and commercial buildings.

This door integrates seamlessly with modern and traditional architectures, whether paired with natural veneer parquet or matching aluminium-framed windows with identical profile depth. Ideal for primary entrances in high-performance residential homes, low-traffic commercial spaces, and heritage renovations where thermal efficiency becomes paramount.

Ud 0.85 W/m²K represents exceptional thermal performance, certified by ift Rosenheim—Europe's most prestigious testing institute for doors and windows. This low value means minimal heat loss during winter and superior protection against thermal infiltration, directly translating to significant reductions in heating and cooling bills. The combination of 3 mm aluminium profile, articulated 34 mm thermal break, and quadruple insulating glazing creates a permanent thermal barrier.

Quadruple glazing (44.1 triplex / 5mm Satinato / 44.1 Triplex) functions with four glass layers and three intermediate insulation layers, providing significant acoustic attenuation compared to standard double or triple versions. The asymmetrical structure with Satinato glass in the middle breaks multiple sound frequencies, reducing urban noise, traffic, and other disturbances to imperceptible levels. This configuration isolates both thermally and acoustically, transforming the space into a sanctuary of silence.

Yes, the 3-point EPDM gasket system distributed across the total 92 mm depth provides robust and reliable multi-seal protection. EPDM is a synthetic elastomer resistant to UV exposure, extreme climate variations, and chemical degradation, ensuring perfect adhesion throughout the door's lifespan. With the 80 mm frame and 92 mm leaf, the aluminium structure creates drainage chambers and weep holes that redirect any water away from the door edges, even under intense wind pressure.

Yes, the L435 model accepts custom dimensions upon order, up to 1200×2500 mm for single-leaf configuration. Dimensions can be tailored precisely to your project's architectural requirements, within the structural limits of the aluminium profile and stability requirements. For any sizing requests outside these parameters, we recommend direct consultation with our technical team to assess feasibility and thermal performance.

The 92 mm total depth (80 mm frame + 92 mm leaf) requires the opening to match the wall thickness, typically between 80–120 mm in brick or concrete masonry. The door is fixed with specific masonry anchors and sealed with polyurethane foam or cement mortar. Frames must accommodate the 92 mm profile depth—we recommend universal frame systems that adapt to existing masonry. Installation requires millimetre precision to ensure proper level and plumb.

The L435 aluminium requires periodic cleaning with water and neutral soap to maintain the natural protection of the aluminium oxide layer. EPDM rubber gaskets must be inspected annually to ensure they are not degraded by UV or weather; any cracks should be replaced immediately. Anodized or painted finishes are durable long-term, but prolonged sun and rain exposure can cause minor colour fading or blemishes. Avoid corrosive contaminants (chlorides, acids); annual rinsing in coastal areas is recommended. Hinges and locking mechanisms require light silicone lubrication every two years.