Factory-direct fenestration solutions precision-engineered to meet demanding European energy efficiency, acoustic attenuation, and weather-sealing standards.
An in-depth guide for Swiss architects, structural engineers, and general contractors specifying glass rooflights across Canton Zürich, Valais, Geneva, and Grisons.
Switzerland presents one of Europe’s most demanding envelope design challenges. Fenestration systems installed in high-altitude zones such as Zermatt, St. Moritz, or Davos must withstand exceptional ground snow loads ($s_k$) exceeding 5.5 kN/m² alongside hurricane-force alpine winds ($q_k > 1.6 \text{ kN/m}^2$). At Doorreme Aluminum Industry Co., Ltd., our custom aluminium skylight window systems are calculated using Finite Element Analysis (FEA) to fulfill exact **Swiss SIA 261 (Actions on Structures)** parameters.
Unlike standard roof hatches, our rooflights feature heavy-gauge 6063-T6 extruded aluminium structural framing with profile wall thicknesses up to 3.0 mm. Internal stainless steel internal stiffeners ensure zero structural deflection under maximum snow accumulation, while preventing structural frame binding during seasonal temperature swings from -25°C in winter to +35°C in summer.
| Performance Specification | Standard Low-E Double Glazed | Swiss Alpine Triple Glazed (Minergie-P Ready) | BIPV Solar Integrated Glass |
|---|---|---|---|
| Glass Build-Up | 6mm Tempered + 16Ar + 6mm Low-E | 6mm HST Tempered + 14Ar + 4mm Float + 14Ar + 6.76mm Laminated Low-E | 8mm Outer BIPV Toughened + 18Ar + 8.76mm Inner Laminated Clear |
| Center-of-Glass U-value ($U_g$) | 1.1 W/m²K | 0.5 W/m²K | 0.7 W/m²K |
| Solar Heat Gain Coefficient ($g$-Value) | 0.52 | 0.36 (Custom Sun Control Coated) | 0.28 (Shading + Energy Generation) |
| Acoustic Rating ($R_w$) | 36 dB | 44 - 48 dB (Acoustic Interlayer) | 40 dB |
| Impact Resistance (EN 12600) | Class 1B1 | Class 1C1 / Anti-Hail Certified (Hail Class 5) | Class 1B1 Heavy Impact |
| Primary Application | Low-Altitude Urban Infill | High Alpine Chalets & Luxury Residences | Eco-Commercial Rooftop Atriums |
Tailored fenestration solutions engineered for the architectural aesthetics and climatic requirements of Swiss cantons.
Custom motorized roof skylights built to handle high thermal dynamics (-20°C ambient outdoor to +22°C indoor) without condensation. Features integrated frame heating strips to thaw heavy snow build-up around perimeter drainage gaskets automatically.
Ultra-slim profile flush glass skylights designed for historic attic retrofits and modern penthouse living. Delivers maximal daylight opening ratio ($>88\%$) while dampening urban tram and traffic sound by up to 48 decibels.
Heavy-duty structural glass skylight roofs combined with integrated motorized bifold/sliding patio doors. Coated with marine-grade PVDF finishes resisting humid lakefront micro-environments and high solar UV indices.
Key drivers shaping architectural specifications across Swiss residential and commercial building sectors.
Swiss building regulations (MuKEn 2014/2020) mandate increasingly strict envelope heat loss limits. Future-proof skylights must combine low U-values with low embodied carbon aluminium profiles made from recycled primary billits.
Modern Swiss luxury villas require motorized skylight actuators connected directly to KNX or Loxone automation networks. Concealed electric chain drives automatically close skylights upon detecting rainfall or wind spikes.
Skylights are transitioning from passive light harvesters to active energy producers. Semi-transparent monocrystalline solar cells laminated between glass layers generate clean solar electricity while providing natural shading.
Architects are moving away from traditional dome skylights toward edge-to-edge flush glass designs. External glass step design ensures seamless water runoff, avoiding dirty water pooling around peripheral seals.
Combining Foshan’s world-class industrial scale with rigorous European quality assurance.
Founded in 2004, Doorreme operates a 123,000 m² state-of-the-art facility in Foshan, China. Equipped with Italian Emmegi 5-axis CNC machining centers and automated glazing assembly lines producing over 500,000 m² annually.
We partner with premier hardware producers such as German Roto, Siegenia, and Hoppe, as well as top-tier specialized concealed actuators. Every seal uses EPDM rubber weatherstripping for 30+ years of leak-free endurance.
Our aluminium windows, doors, skylights, and curtain walls hold international NFRC, CSA, CE, and ISO9001 certifications. Trusted by developers, contractors, and architects in more than 140 countries globally.
Direct technical answers for Swiss architects, developers, and general contractors importing custom skylight systems.
Contact our technical engineering team today. Receive detailed CAD shop drawings, SIA load calculations, and factory-direct pricing within 24 hours.
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