Hunan Haolv Building Materials Co., Ltd. has 19 years of experience in premium UPVC Bay Window manufacture to meet architectural quality. We are accredited by ISO, CE and AAMA and our manufacturing facility guarantees that every bay window is built to exact specifications and fulfils international requirements. Our product systems are supported by strategic cooperation with CONCH for superior raw materials. Our multi-chambered profiles (3-5 chambers) have frame wall thickness from 2.0mm to 2.8mm. With U-values of 1.6 W/m²K with Low-E glazing and sound reduction of 30-45 dB for superb acoustic comfort in both residential and commercial settings, these windows provide remarkable thermal efficiency.

You deserve windows and doors that work well and look well. Our bay window systems are designed with a sophisticated multi-chamber shape that provides insulating air pockets, drastically lowering heat transmission and energy expenses. Made from unplasticized polyvinyl chloride, it will not warp, rot or corrode like conventional wood or aluminium alternatives.
Galvanised steel reinforcements (1.2mm to 2.0mm thickness) inserted in the profiles provide remarkable structural stability. This technical method allows your bay window to have correct geometry even in high-wind conditions. With EPDM gasket sealing systems you are guaranteed of long term air tightness and water repellency under all climates.
Compared to traditional materials, the UPVC Bay Window needs very little care. No more frequent painting, sanding or protective treatments. Just wipe the frames down occasionally to keep them looking as good as new.
We know vision in architecture requires adaptability. We provide full customisation for OEM/ODM with in-depth design adaption. Polygonal designs, arch top modifications or one-of-a-kind angular projections, our technical staff makes your demands a reality.
Custom forms include circular, triangular, trapezium and entirely unique geometry. All designs are manufactured to exact specifications to provide a seamless match with your building structure. There are a number of glass alternatives, from tempered, laminated, double and triple glazing to precise dimensional specifications.

| Parameter | Specification |
|---|---|
| Profile Chambers | 3-5 chambers |
| Frame Wall Thickness | 2.0mm - 2.8mm (Class A/B) |
| Steel Reinforcement | 1.2mm - 2.0mm galvanized |
| Thermal Conductivity | U-value as low as 1.6 W/m²K |
| Sound Reduction | 30-45 dB |
| Sealing System | EPDM multi-layer gaskets |
| Glass Compatibility | Up to 32mm-40mm IGU |
| Certifications | ISO / CE / AAMA |
The UPVC Bay Window system is ideal for several architectural applications where the need is to create more space and enhance the intake of natural light. High-end residential homes get panoramic viewing angles and improved internal space. The properties with minimum maintenance are used in the restoration of historic buildings while maintaining period-appropriate aesthetics.
The non-corrosive characteristic of UPVC is especially good for coastal houses. Our bay windows are safe from the salt-laden air that rots wood and ruins aluminium. These systems are used in commercial settings such as boutique hotels, workplace reception areas to provide a dramatic first impression and to better insulate HVAC loads.
Our bay windows are specified for special geometric needs that cannot be addressed with conventional systems for landmark buildings and churches. Architectural improvement skills demonstrate design originality while preserving structural integrity.



Our integrated supply method enhances your project timeframe. We provide comprehensive system solutions from a single supplier, certified, including frames, hardware, accessories and glass. This removes coordination issues that might arise with many suppliers, and assures component compatibility.
We have a good supply chain and enough stock. We will deliver within 25-30 days from order confirmation to shipping. You minimise project delays due to material shortages or long lead times. Every purchase includes technical help from our engineering staff, who can walk you through your application and provide suggestions to optimise your system.
Q:What makes products superior to aluminum in coastal areas?
A:UPVC is inherently non-corrosive. Salt spray and humid air that cause aluminum oxidation and degradation have zero impact on our profiles. You get decades of maintenance-free performance without surface deterioration.
Q:Can your bay windows support triple glazing for maximum insulation?
A:Yes. Our heavy-duty profiles feature wider glass grooves engineered to accommodate Insulated Glass Units (IGU) up to 40mm thick. This allows triple glazing configurations for extreme climate applications.
Q:How do these windows perform during heavy rainfall?
A:Each system incorporates an integrated drainage design with concealed weep holes. Water is directed away from internal spaces through engineered channels, preventing leakage even during intense storm conditions.
Q:What customization options are available for unique architectural designs?
A:We support complete geometric customization including polygonal, curved, and angled configurations. Our CAD-to-production workflow ensures precise fabrication matching your exact specifications and structural requirements.
Q:Do you provide technical support for installation?
A:Absolutely. Our engineering team offers comprehensive technical consultation, installation guidelines, and project-specific solution design. We ensure proper integration with your building envelope for optimal performance.
Our UPVC Bay Window's team is prepared to transform your architectural vision into reality. Contact us at kristin@haolvwindows.com for detailed specifications, samples, or project consultation.

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