Dongcheng's aluminum skylight series is engineered to introduce natural light and controlled ventilation into building rooftops without compromising structural integrity or waterproofing performance. Frame profiles are lightweight, high-strength aluminum alloy, paired with anti-explosion, UV-resistant glazing and precision-engineered multi-layer sealing systems that reliably prevent water ingress under sustained rain and wind pressure.
The series spans manual, motorized, top-hung, flush-lift, horizontal-sliding, and custom-profile configurations, covering everything from basic residential daylighting to intelligent, sensor-integrated rooftop ventilation in commercial buildings. Installation is designed to be non-invasive, preserving the host roof's original waterproofing layer while providing a durable, weather-tight penetration.
Suitable for villas, duplex residences, sunrooms, and commercial rooftops, each skylight model is available in customizable dimensions and finishes, making it straightforward to match both functional specifications and architectural design intent.
About Dongcheng
Located in the High-tech Industrial Park of Wuxing District, Huzhou, Zhejiang, China, Zhejiang Dongcheng Energy Saving Technology Co., Ltd. is a professional manufacturer specializing in aluminum energy-efficient doors and windows, fire-rated doors and windows, curtain wall systems, railings, shading systems, and skylights. Aluminum Sunroof Manufacturers and Aluminum Sunroof Factory in China. Integrating R&D, design, production, installation, and after-sales service, we provide complete solutions for a wide range of building applications.
With advanced production equipment, a well-established management system, and an experienced professional team, we are committed to delivering reliable products and consistent quality. Operating in accordance with the ISO9000 quality management system, we implement standardized control throughout the production process to ensure that our products meet relevant standards and project requirements. Custom Aluminum Sunroof
Driven by technology and innovation, we continuously improve our products and services to better serve the market. We also place great importance on safety management, maintaining strict supervision throughout project execution to ensure safe, stable, and reliable delivery.
Guided by the principles of integrity, quality, and service, we are committed to providing cost-effective products and dependable support, and we look forward to building long-term partnerships with customers worldwide.
Certificate
Latest Updates
Industry knowledge
Aluminum sunroofs, particularly those integrated into large residential or commercial atriums, must withstand significant static and dynamic loads. Unlike standard windows, sunroofs are subjected to direct weight from snow accumulation, maintenance personnel, and wind uplift forces. The structural integrity of these systems relies on the profile's moment of inertia and the quality of the alloy used. Zhejiang Dongcheng Energy Saving Technology Co., Ltd., located in the High-tech Industrial Park of Wuxing District, Huzhou, Zhejiang, China, utilizes high-grade aluminum alloys that offer superior strength-to-weight ratios. As a professional manufacturer integrating R&D, design, production, installation, and after-sales service, the company ensures that each sunroof module is engineered to meet strict local building codes regarding load-bearing capacity.
Condensation on the interior surface of aluminum sunroofs is a common issue due to the high thermal conductivity of metal. To mitigate this, modern systems incorporate thermal break technology, where a polyamide strip separates the interior and exterior aluminum profiles. This barrier significantly reduces heat transfer, keeping the interior frame surface closer to room temperature. Zhejiang Dongcheng Energy Saving Technology Co., Ltd. specializes in aluminum energy-efficient doors and windows and curtain wall systems, applying similar thermal break principles to their skylight products. Supported by advanced production equipment, the company ensures precise insertion of these thermal barriers, which is critical for maintaining consistent performance and preventing thermal bridging.
| Glazing Type | U-Value (W/m²K) | Condensation Risk |
| Single Glazed | 5.8 | High |
| Double Glazed Air | 2.8 | Moderate |
| Double Glazed Argon | 1.6 | Low |
| Triple Glazed Low-E | 0.8 | Very Low |
Effective waterproofing is paramount for aluminum sunroofs, as they are constantly exposed to rain and snow. A multi-stage sealing system is typically employed, involving external weather seals, internal condensation channels, and dedicated drainage paths. Water that penetrates the outer seal is captured in a gutter system within the frame and directed out through weep holes. Zhejiang Dongcheng Energy Saving Technology Co., Ltd. offers skylights and related products for a wide range of building applications, featuring engineered drainage channels that prevent water accumulation even during heavy downpours. Their well-established management system and experienced professional team ensure that every installation adheres to strict waterproofing protocols, minimizing the risk of leaks and subsequent structural damage.
By choosing high-quality components from reputable manufacturers like Zhejiang Dongcheng Energy Saving Technology Co., Ltd., homeowners and builders can ensure that their aluminum sunroofs provide reliable performance and aesthetic appeal for years to come. The company’s commitment to delivering reliable quality and consistent performance is evident in their comprehensive product range, which includes fire-rated doors and windows, railings, and shading systems, all designed to complement modern architectural needs.