Direct factory supply engineered to AS2047, NFRC, CSA, and CE certification standards. Formulated for extreme wind-loads, thermal insulation, and coastal corrosion resistance.
Operating from Foshan—China's global capital for high-end aluminum profile extrusion and architectural fabrication—Doorreme Aluminum Industry Co., Ltd. delivers end-to-end OEM/ODM solutions.
In modern architectural design, the integration of daylighting solutions via pitched roof openings and flat-roof sky glazing requires extreme structural integrity, thermal decoupling, and zero-leakage weatherproofing. As a premier China wholesale aluminium roof windows manufacturer and exporter, our engineering department optimizes fenestration products to surpass stringent international building standards including Australian AS2047, North American NFRC/CSA, and European CE standards.
Our roof window frame profiles are extruded from high-grade 6063-T6 architectural aluminium alloy. The T6 temper treatment provides an ultimate tensile strength exceeding 205 MPa and yield strength over 170 MPa, ensuring structural deflection stays within L/300 safety limits under high wind pressure and snow loads.
To eliminate heat bridging, our thermal break roof windows utilize high-precision PA66-GF25 (25% fiberglass reinforced polyamide) thermal barrier strips. This separates the interior and exterior aluminum profiles, lowering the overall thermal transmittance (U-factor) down to 1.1 – 1.6 W/(m²·K) depending on glazing selection, preventing interior frame sweating even in extreme sub-zero exterior temperatures.
Water infiltration is the primary failure mode of lower-quality skylights. Our roof window systems feature integrated step-flashing kits customized for slate, tile, corrugated metal, and flat membrane roofs. The system incorporates an primary dynamic drainage channel crafted from marine-grade anodized aluminum or PVDF-coated sheet metal.
Air permeability and water tightness are achieved through a continuous triple-gasket sealing system utilizing vulcanized EPDM (Ethylene Propylene Diene Monomer) weatherstripping. This material retains elasticity across a temperature spectrum of -40°C to +120°C, resisting ozone degradation, UV breakdown, and permanent compression set.
Overhead glazing demands strict safety compliance. All Doorreme roof windows are equipped with dual-pane or triple-pane insulated glass assemblies featuring:
To meet the demands of modern smart buildings, our electric roof windows feature concealed linear chain actuators operating at 24V DC or 230V AC. Motors deliver up to 600N of pushing/pulling force, allowing smooth operation of heavy triple-glazed sashes.
System controllers integrate seamlessly with building management systems (BMS) via KNX, Modbus, or RF wireless protocols. Integrated weather stations continuously monitor environmental parameters, triggering automatic window closure at the first detection of rainfall via optical rain sensors, or modulating openings based on indoor CO2 and humidity levels.
Below is a comparative breakdown of our primary roof glazing and architectural fenestration product lines, designed to assist structural engineers, commercial developers, and procurement officers in specifying the ideal solution.
| Roof Window Category | Frame Alloy / Thermal Strip | Standard Glazing Assembly | U-Value (W/m²K) | Acoustic Rating (Rw) | Max Wind Load (kPa) |
|---|---|---|---|---|---|
| Manual Top-Hung Roof Window | 6063-T6 / PA66-GF25 (24mm) | 6mm Toughened + 16A Argon + 6.38mm Low-E Lam | 1.4 – 1.6 | 38 dB | 3.5 kPa (AS2047 N6) |
| Electric Chain Actuator Skylight | 6063-T6 / PA66-GF25 (32mm) | 6mm Solar Control + 18A + 8.76mm SGP Lam | 1.2 – 1.4 | 42 dB | 4.5 kPa |
| Flat Roof Glass Exit Hatch | 6063-T6 Heavy Duty Rail | 8mm Toughened + 16A + 10.38mm Lam | 1.3 – 1.5 | 40 dB | 5.0 kPa (Hurricane Proof) |
| Fixed Continuous Vault Glazing | Structural Silicone Glazing (SSG) | 6mm Low-E + 12A Argon + 6mm Toughened | 1.5 – 1.7 | 36 dB | 3.0 kPa |
Key evolutionary directions shaping the global wholesale procurement of aluminium roof windows, skylights, and facade systems.
Building-Integrated Photovoltaics (BIPV) are rapidly transforming passive skylights into active clean energy generators, utilizing semi-transparent cadmium telluride (CdTe) or thin-film solar glass to harvest solar energy without obstructing natural daylighting.
Vacuum Insulated Glass (VIG) technology eliminates gas conduction entirely, allowing ultra-thin sashes to achieve thermal performance ratings down to U-values of 0.4 - 0.6 W/(m²·K), meeting net-zero carbon building regulations in Europe and North America.
Global developers demand full Environmental Product Declarations (EPDs). We utilize low-carbon secondary aluminum billets produced via renewable hydro-powered smelting, drastically slashing embedded carbon emissions by up to 70% per ton of extrusion.
Electronically switchable electrochromic glass allows users to modulate light transmission and solar heat gain coefficient (SHGC) from clear to dark blue at the touch of a button, removing the need for mechanical exterior shades or interior blinds.
Clear answers on custom fabrication, compliance certifications, shipping protection, and factory lead times.
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