Explore our export-grade aluminium skylight windows, engineered to withstand extreme cyclonic wind loads, intense thermal stress, and stringent water penetrability standards for global commercial and luxury residential builds.
Recognised across international architectural circles, Guangdong Dejiyoupin Doors and Windows Co., Ltd. (DERCHI) represents China's gold standard in precision fenestration, bridging raw metallurgical processing with German precision engineering.
From architectural-grade 6063-T6 virgin aluminum billet extrusion and robotic polythermal break rolling to automated multi-chamber EPDM vulcanisation, we eliminate intermediary markups, ensuring sub-millimeter manufacturing tolerances across every roof window project.
DERCHI skylights undergo severe laboratory pressure testing up to 4500Pa Ultimate Limit State (ULS) wind loads and 1000Pa static water penetration resistance. We provide certifiers with signed engineering calculations, seismic flexibility reports, and structural glass finite element analyses (FEA).
Our in-house technical department provides complete BIM/Revit libraries (LOD 400), custom thermal deflection calculations, and detailed CAD shop drawings matched to your exact architectural roof curb schedules prior to extrusion tooling or panel fabrication.
In modern architectural building envelopes, roof skylights represent the most physically challenged fenestration component. Located on the horizontal or inclined plane, they are subjected to intense solar radiation (continuous infrared and ultraviolet degradation), concentrated mechanical ponding loads, extreme interior condensation differentials, and severe wind uplift forces. For specifiers, façade consultants, and general contractors, selecting an OEM/ODM manufacturing partner demands an exhaustive understanding of mechanical thermal breaks, mechatronic actuator synchronization, and structural silicone glazing technology.
Historic architectural skylights suffered from acute thermal bridging, resulting in interior frame condensation that compromised ceiling plaster, promoted mould growth, and diminished HVAC efficiency. Modern DERCHI OEM aluminium skylight profiles utilize advanced PA66 GF25 (25% glass fibre reinforced polyamide) structural insulation strips. These thermal breaks isolate exterior and interior aluminum alloy extrusions across a width of up to 34mm, creating a dedicated isothermal plane.
By filling internal profile hollows with polyurethane aerosolized insulation or expanded Aerogel cores, our structural frames achieve U-values as low as 1.1 W/(m²·K) (equivalent to NFRC U-factor 0.20 Btu/h·ft²·°F). When paired with warm-edge composite spacers (such as Technoform or Swisspacer) and triple-glazed insulated glass units (IGU), overall thermal transmittances comfortably surpass Passive House standards and Australia's National Construction Code (NCC 2022 Section J) energy benchmarks.
DERCHI's proprietary skylight profile extrusions incorporate an integrated primary drainage channel, secondary gasket barrier, and hidden internal weep paths. Even under zero-pitch (0°) or ultra-low pitch (3° to 5°) installations, condensation generated on the interior lite is channelled outward without relying on vulnerable surface mastic sealants.
Unlike vertical facade glass, overhead skylight glazing must comply with rigorous human impact safety and overhead fall-through prevention codes (such as AS 1288 in Oceania and OSHA/ASTM standards in the USA). Our OEM manufacturing lines utilize tailored composite glass make-ups engineered specifically for the client's geographic microclimate:
Modern commercial developments and luxury residential estates require skylights to function as responsive environmental filters. DERCHI's OEM motorized skylights incorporate heavy-duty stainless-steel linear chain actuators, rigid rack-and-pinion rams, or vertical telescoping hydraulic drives capable of exerting operating push/pull forces from 400N to 3500N per unit.
Our automation controllers interface natively with KNX, BACnet, Modbus, and Zigbee Home Automation architectures. Integrated multi-parameter environmental sensor arrays monitor real-time wind speed (automatically closing the window when gusts exceed 14 m/s), optical rainfall detection (triggering rapid motorized shutdown within 1.5 seconds), and indoor VOC/CO2 levels for natural passive night-purge ventilation.
| Performance Parameter | Generic Commodity Skylights | DERCHI OEM Architectural Standard | DERCHI Heavy-Duty Cyclone / Smoke Spec |
|---|---|---|---|
| Aluminium Alloy Profile | Recycled 6063 Aluminum (1.2mm - 1.4mm) | Primary Billet 6063-T6 (2.0mm - 2.5mm) | High-Strength 6005-T5 / 6063-T6 (3.0mm+) |
| Thermal Transmittance (U-Value) | 3.8 – 4.5 W/(m²·K) (Non-Thermal) | 1.6 – 1.8 W/(m²·K) (PA66 24mm Break) | 1.0 – 1.3 W/(m²·K) (Aerogel Filled / Triple IGU) |
| Structural Wind Load (AS 2047) | N1 – N3 (Up to 1500Pa) | N4 – N5 (2500Pa – 3500Pa) | N6 Cyclonic (4500Pa+ Serviceability) |
| Water Penetration Resistance | 150Pa – 300Pa | 600Pa (Static Pressure Test) | 1000Pa+ (Dynamic Cyclic Infiltration) |
| Smoke Exhaust Compliance | None (Standard Ventilation) | Manual Emergency Override | EN 12101-2 Certified (Opens in <60s at 300°C) |
| Hardware & Actuators | Generic Chinese domestic motors | DERCHI Silent DC 24V Actuators (IP65) | German GEZE / Mingardi High-Torque Drives |
| Acoustic Isolation (STC/Rw) | Rw 28 – 30 dB | Rw 36 – 38 dB | Rw 42 – 45 dB (Acoustic PVB Lamination) |
How stringent ESG frameworks, building envelope decarbonization, and modular prefabricated construction are restructuring international sourcing strategies for developers and architects.
Global architectural standards such as LEED v4.1, BREEAM, and Green Star (Australia) are prioritizing fenestration fabricated using low-carbon aluminum smelted with renewable hydro-electric energy. DERCHI offers certified low-carbon billets (≤4.0 kg CO2 per kg Al) with verified Environmental Product Declarations (EPDs), enabling commercial bids to secure critical sustainability credits.
The convergence of architectural roof lights with power-generation technology is accelerating rapidly. Transparent Cadmium Telluride (CdTe) and Perovskite thin-film photovoltaic glass are transforming passive daylighting apertures into clean electricity generators. Our OEM profile engineering accommodates concealed internal wiring conduit pathways and micro-inverter junction boxes within the perimeter frame.
Contractors are aggressively moving away from complex on-site glazing and stick-built curb flashing. Procurement demand has swung decisively toward completely pre-glazed, pre-wired, unitized modular skylights delivered directly in containerized crating. DERCHI ships fully assembled units that drop directly onto existing builder-prepared curbs, slashing site labor expenses by up to 70%.
Clear, uncompromised answers for structural engineers, project specifiers, commercial quantity surveyors, and international freight partners.
Every DERCHI skylight contract ships with project-specific documentation: AS 2047 test reports issued by NATA-accredited laboratories, AS 1288 overhead safety glazing compliance sheets, CE EN 14351-1 declarations of performance, mill test certificates (MTC) for alloy composition (6063-T6), and batch testing certificates for Dow Corning structural silicone curing.
Standard skylights leak because standing water ponds against silicone seams. DERCHI flat-roof systems utilize an engineered structural curb adapter that creates a minimum 4° fall on the external glass surface while maintaining a horizontal interior ceiling sightline. Combined with vulcanized vulcan EPDM corner gaskets and continuous silicone stepped glazing, ponding water runs off cleanly.
Yes. Our automatic fire & smoke exhaust roof skylights comply with EN 12101-2 and local municipal life-safety codes. We configure 24V/48V fail-safe actuator drives that trigger fully open (≥90° or maximum throat area) within 60 seconds of receiving a dry contact fire signal, backed by auxiliary battery power stations capable of functioning during building power collapse.
For custom profile extrusions requiring dedicated die tooling, extrusion development takes 12-15 days, sample verification requires 5 days, and full batch production typically takes 25-30 days. For configurations utilizing our standard inventory of tested commercial dies, typical turnaround from approved shop drawings to container stuffing is 20-25 business days.
For installations within 5km of ocean shorelines (such as Pacific Rim coastal developments), our aluminum profiles undergo rigorous multi-stage pre-treatments followed by Qualicoat Seaside-class AAMA 2605 fluorocarbon (PVDF) 3-coat architectural finishes or 25-micron anodic oxidation coatings. All exposed fasteners and motor chains are upgraded to marine-grade AISI 316 stainless steel.
All finished skylights are protected with static PE surface wrap, corner edge protectors, shock-absorbing cellular EPE foam, and sealed inside fully enclosed, fumigation-free, heat-treated plywood crates engineered with internal steel bracing. Crates are loaded with moisture-absorbing silica gel desiccants to prevent container-rain oxidation during ocean voyages.
Submit your architectural roof plan, schedule of quantities, or structural performance requirements. Our Foshan-based fenestration engineering team provides preliminary CAD shop drawings, glass wind-load analyses, and comprehensive DDP/FOB quotes within 24 hours.