Flexible Warm edge Glass

Shandong Duoping New Materials Co., Ltd. is a leading provider specializing in the research, development, production, and supply of flexible warm edge glass. Utilizing flexible polymer sealant technology, combined with Low-e low-emissivity coatings and high-purity argon gas filling, we create high-end energy-efficient glass that is resistant to temperature differences, easy to adapt, and free from cold bridging. This glass is ideal for applications in complex facades, retrofitting old buildings, and construction in cold regions. It is widely used in residential windows, curved skylights, high-end shops, and other scenarios. With its flexible adaptability and stable performance, it serves markets nationwide. We look forward to partnering with you to provide customized glass solutions for various complex energy-efficient building projects.

Technical Parameters

Product Features

The core advantage of Flexible Warm Edge Glass lies in its “flexible adaptation + cold-bridge-free energy saving” design. The use of EPDM silicone flexible sealant replaces traditional rigid aluminum spacers and integrated tapes, enabling it to adapt to curved and irregular frames. The minimum bending radius is 1.5 meters, addressing the sealing challenges of complex architectural designs. The sealant material provides efficient sealing and cushioning, completely eliminating cold bridge effects. In winter, it prevents condensation and mold growth. With a U-value as low as 1.6 W/(㎡·K), paired with Low-e coatings and argon gas filling, the infrared blocking rate is ≥85%, blocking heat during summer and retaining warmth during winter. Additionally, the flexible sealant absorbs temperature-induced deformation stress, offering superior sealing performance compared to rigid structures.

Product Applications

Applications focus on projects with complex shapes and temperature-sensitive needs:

Residential: Curved balcony windows, irregular sunrooms, and retrofitting old buildings (adapting to existing deformed frames).

Commercial: Curved facades, curved skylights, high-end hotel revolving doors, meeting both energy-saving and structural requirements.

Special Scenarios: Adaptable to northern cold regions (resistant to cold bridges), and coastal high-salinity areas (salt-resistant sealants). Balancing flexibility with resilience to harsh environments. Available with single-silver or double-silver Low-e coatings to meet various energy-saving standards and design requirements.

Production Details

The entire production process is automated, using specialized flexible sealant lines. The base glass is made from tempered glass (customizable for flat or curved shapes), cleaned in a water-free, dust-free environment, and vacuum-dried before entering the core process. The flexible sealant is cut to match the frame shape with high-precision equipment, ensuring a seamless seal between the sealant and glass. High-efficiency desiccants are incorporated to absorb moisture, and high-purity argon gas (≥90% concentration) is filled to improve thermal insulation. The Low-e coating is applied to the inner side of the cavity, with additional heat-bending for curved versions. The process ensures no manual errors, providing consistent and seamless sealing for complex shapes.

The flexible sealant is made from modified EPDM silicone material, offering excellent weather resistance and the ability to withstand temperature changes from -40℃ to 85℃. It is UV-resistant, salt-fog resistant, and will not age or crack with long-term outdoor use. The edges of the glass are polished and chamfered, with the flexible sealant providing cushioning to reduce stress concentration and breakage risks. For curved versions, the bending process ensures wrinkle-free and leak-proof sealant application. The tempered base glass offers high impact resistance, and if broken, the glass shatters into blunt, non-hazardous particles, ensuring safety. The overall lifespan of the product is ≥25 years.

Structure and Design Explanation

The core structure of Flexible Warm Edge Glass is available in flat and curved versions. Common specifications include:

Flat Double-glazed Single-cavity (5+12A+5): Basic model, U-value 2.2-2.4 W/(㎡·K), suitable for standard windows, offering balanced cost-performance.

Flat Triple-glazed Two-cavity (5+12A+5+12A+5): Premium model, U-value 1.6-1.8 W/(㎡·K), suitable for cold regions.

Curved Double-glazed Single-cavity (5+12A+5): Flexible model, bending radius ≥1.5m, suitable for curved facades, balcony windows, and customizable with different curvatures.

The design supports full customization of curvature, size, and visible light transmittance (60%-80%), with color options including light gray, light blue, and clear transparent. The maximum bending radius for curved models is 3 meters, and the largest flat model size is 2440mm × 3660mm. Suitable for windows, curved skylights, irregular partitions, and other applications. During installation, flexible sealant is paired with a matching spacer to ensure proper fit, with curved versions requiring careful attachment to avoid wrinkles. Flat versions should allow 5-8mm of expansion space to accommodate temperature changes. The cavity should never be disassembled to preserve the sealing structure.

Core Advantages

Flexible Shape Adaptability: Can be bent to fit curved or irregular frames with a radius ≥1.5m, solving sealing problems for complex shapes, providing both aesthetics and sealing efficiency.

Temperature-resistant and Deformation-free: The flexible sealant absorbs temperature-induced deformation stress, preventing cracking or leakage due to temperature variations, making it suitable for regions with extreme temperature fluctuations.

Cold Bridge-free and More Energy-efficient: The sealant fully encapsulates the edge, eliminating the cold bridge effect, preventing condensation and mold growth in winter. With a U-value as low as 1.6, it offers superior insulation compared to traditional rigid warm-edge glass.

High Corrosion Resistance and Durability: Modified sealant material is salt-fog resistant, UV-resistant, and suitable for coastal or outdoor environments, with a lifespan of ≥25 years.

Easy and Efficient Installation: The flexible sealant can adapt to slightly deformed old frames without needing additional adjustments, and the one-piece curved design improves installation efficiency by 30%.

Comparison with Similar Products

Usage Instructions and Precautions

Installation: Professional installation is required. Curved models must be pre-positioned, ensuring even pressure on the sealant to avoid wrinkles and leakage. Flat models must leave 5-8mm expansion space for temperature adaptability.

Cleaning: Use soft cloths and neutral cleaners, avoiding abrasive pads or sharp objects that could scratch the surface. Do not expose the flexible sealant to acidic or alkaline chemicals, which could cause aging or cracking.

Sealant Inspection: Regularly inspect the sealant for cracks or separation from the glass. If these issues occur, replace the glass immediately to maintain proper sealing and prevent leakage. In coastal or high-temperature areas, perform an annual inspection.

Impact Protection: Avoid heavy impacts, particularly on curved models, as they have concentrated stress points. Ensure protective measures are in place for high-rise installations to prevent damage from falling objects.

Winter Care: Clear accumulated snow and ice promptly to prevent deformation of the sealant. Avoid immediate cold-water rinsing after exposure to high heat, as temperature differences may cause glass breakage and affect the sealing structure.

Disassembly: Do not attempt to disassemble the cavity or cut the glass, as it will damage the sealant and render it ineffective, requiring complete replacement.

FAQs

Q: Will the flexible sealant become deformed after prolonged bending?

A: No. The modified EPDM sealant has memory rebound capabilities, ensuring that it will not permanently deform after long-term bending and will maintain sealing pressure for continued use.

Q: What curvature can the glass fit? Can it be used for a regular home's curved balcony?

A: The glass can fit frames with a bending radius ≥1.5m. It is suitable for residential curved balconies and windows, and even larger curves can be custom-made. No need for stitching, ensuring more stable sealing.

Q: Will the sealant degrade in coastal areas due to salt fog?

A: No. The sealant is treated to resist salt fog, reaching C5 level corrosion resistance, making it ideal for coastal and outdoor environments.

Q: Can this glass replace old glass in homes directly?

A: Yes. If the frame is slightly deformed, the flexible sealant adapts without needing to modify the frame, allowing direct replacement of old glass. Installation is faster and easier than with rigid glass.

Purchasing and Customization Services

We provide comprehensive one-stop services for purchasing and customizing Flexible Warm Edge Glass, including full parameter customization: structural type (flat/curved), curvature radius, pane specifications, glass thickness (5-8mm), and Low-e coating types. Tailored energy-saving and design solutions are provided based on the project’s location and requirements.

We offer free on-site measurements, curvature simulations, and technical services, providing detailed design plans and installation blueprints. Once confirmed, production begins in batches, with volume discounts available. For curved models, we use customized shockproof packaging to protect the sealant during shipping. Nationwide delivery is available, with a 3-year warranty covering sealant aging, leakage, and glass breakage issues.