Constructed with high-tensile 6063-T6 architectural aluminium, multi-point perimeter compression seals, and techno-polymer thermal barriers to meet the stringent German Building Energy Act (GEG) standards.
Berlin features a unique urban fabric ranging from 19th-century Gründerzeit historic blocks to modern Net-Zero passive apartment complexes in Mitte and Charlottenburg. Our aluminium side window systems are calibrated to address these precise conditions.
Historic residential buildings in Kreuzberg, Prenzlauer Berg, and Friedrichshain present strict visual guidelines. Our slim-sightline aluminium side casement profiles can be customized with architectural heritage mullions, replicating classical proportions while integrating high-efficiency thermal breaks that fulfill local Denkmalschutz energetic upgrade requirements.
Apartment facades adjacent to the Berlin S-Bahn ring, arterial roads like Bundesstraße 1, or high-density transit corridors demand certified noise abatement. Our side-pressure acoustic sliding windows achieve Sound Transmission Class (STC) ratings above 42 dB with asymmetrical laminated double and triple glazing.
New multi-family residential towers in Europacity and Adlershof must comply with strict German KfW 40 energy benchmarks. Our 120-series multi-chamber thermal break profiles, equipped with 34mm polyamide insulation strips and argon-filled warm-edge spacers, achieve overall fenestration Uw-values below 0.85 W/(m²K).
| Performance Category | German / EU Standard | Standard Local Requirement | DERCHI Side Windows Engineering Spec |
|---|---|---|---|
| Thermal Transmittance (Uw) | DIN EN ISO 10077-1 / GEG 2024 | Uw ≤ 1.30 W/(m²K) | Uw = 0.85 – 1.10 W/(m²K) (Triple/Double Low-E, Argon 90%) |
| Air Permeability | DIN EN 12207 | Class 3 / Class 4 | Class 4 (Tested multi-point perimeter EPDM compression) |
| Water Tightness | DIN EN 12208 | Class 7A – 9A | Class E900 (Continuous concealed drainage chambers) |
| Wind Load Resistance | DIN EN 12210 | Class C3 – C4 | Class C5 / B5 (High-tensile 6063-T6 virgin aluminium alloy) |
| Acoustic Insulation (Rw) | DIN 4109 Sound Class 3–5 | Rw ≥ 35 dB | Rw = 38 dB – 46 dB (Acoustic PVB interlayers installed) |
Driven by the decarbonization of Germany's building stock and rigorous European circular economy legislation, procurement requirements in Berlin are shifting rapidly toward sustainable, durable materials.
German developers are turning away from uPVC due to microplastic degradation and thermal deformation. Low-carbon extruded aluminium profiles offer 50+ year lifecycles and 100% recyclability, aligning with the DGNB (German Sustainable Building Council) circularity credits.
Modern Bauhaus-inspired residential projects across Berlin demand maximum natural daylight transmission. Side-hung windows featuring concealed hinges and structural glazing profiles allow glass surface areas to exceed 85% of total rough opening dimensions.
To prevent mold formation in airtight thermal envelopes, Berlin building regulators mandate strict ventilation concepts (Lüftungskonzept according to DIN 1946-6). Modern side-hung tilt windows with micro-ventilation positions provide acoustic-buffered passive airflow.
With street-level security regulations rising across urban European centers, ground-floor fenestration tenders specify resistance classes RC2 and RC3 according to DIN EN 1627, requiring internal mushroom-head locking pins and P4A safety glass.
With over 25 years of specialized manufacturing precision and recognition as one of China's Top 10 premium architectural fenestration manufacturers, we deliver full technical documentation, verified testing reports, and competitive factory-direct supply chains.
Every window line is rigorously tested and verified to CE, ISO 9001, AS 2047, and UL international standards. We provide complete CE Declaration of Performance (DoP) documents, U-value calculation tables, and material test reports ready for German building authority (Bauaufsicht) review.
Our in-house technical engineering team prepares custom AutoCAD architectural shop drawings, profile section details, static wind load calculations, and BIM models free of charge to help general planners integrate fenestration assemblies smoothly into their project schedules.
Windows are protected by multi-layer anti-scratch film, edge-impact buffers, desiccants, and fumigated steel-reinforced wooden crates. We arrange direct shipping routes via Port of Hamburg with full customs documentation (Carnet/EUR.1/Bills of Lading) and direct container freight handling to Berlin sites.
Audit our automated CNC profile machining centers, robotic corner-crimping units, and testing laboratories directly from your office in Berlin before contract execution. Contact our engineering desk to request our 360° VR factory tour link and technical portfolio.
Straightforward answers addressing technical compliance, logistics, customs clearance, and warranty protections for importing aluminium windows from China to Berlin.
Collaborate directly with our engineering department. We deliver complimentary thermal calculations, custom shop drawings, and competitive project estimates for Berlin residential developments, renovations, and commercial complexes.