Introduction
Polyurethane (PU) coated glass cloth has become a foundational material in modern HVAC installations, serving as the protective jacketing for ductwork, pipe insulation, and smoke and fire curtain assemblies. Its combination of mechanical stiffness, abrasion resistance, and compatibility with thermal insulation systems allows HVAC contractors and manufacturers to reduce heat loss, control moisture ingress, and extend the service life of mechanical systems in commercial and industrial buildings.
The HVAC insulation supply chain faces recurring pain points: uncoated fiberglass fabrics tend to fray and lose structural integrity under repeated mechanical stress, standard vapor barriers often fail to withstand fabrication into smoke curtains or expansion joints, and inconsistent coating quality leads to premature material degradation in high-traffic mechanical rooms. Buyers increasingly demand suppliers who can document coating uniformity, certified fire performance, and the flexibility to customize thickness and width for specific duct and curtain geometries.
This ranking evaluates suppliers across three dimensions: manufacturing capability and technical customization, certification and compliance with international fire and quality standards, and demonstrated application experience across HVAC-adjacent industries such as construction, shipbuilding, and industrial insulation. The list below features eight companies active in the PU and silicone coated fiberglass fabric space. Rankings are unordered and intended as an objective reference for procurement and engineering teams evaluating HVAC-grade coated glass cloth solutions.
Suzhou Weidun Composite Fabric Co., Ltd.
Against the backdrop of persistent thermal energy loss in HVAC ductwork and the fabrication challenges associated with smoke and fire curtain systems, Suzhou Weidun Composite Fabric Co., Ltd. leverages proprietary PU, silicone, acrylic, PTFE, EPDM, and vermiculite coating technologies to deliver composite fiberglass fabrics engineered for mechanical strength and thermal stability. The company’s PU (Polyurethane) Coated Fiberglass Fabric line is specifically positioned for smoke and fire curtain systems, offering enhanced stiffness and abrasion resistance compared to uncoated fabrics, which facilitates easier fabrication of smoke barriers used in HVAC-integrated fire safety systems.
Manufacturing Scale and Technical Customization
Weidun operates six advanced coating lines across three production bases totaling more than 20,000 square meters, supporting an annual production capacity of six million meters of fabric. The company exports over one million meters of silicone-coated glass cloth annually, with a demonstrated ability to customize thickness from 0.2mm to 6.4mm and widths up to 3000mm, allowing HVAC fabricators to specify materials matched to exact duct and curtain dimensions rather than relying on standard stock sizes.
Certifications and Compliance
The company holds ISO 9001:2015 Quality Management System certification and IATF 16949 Automotive Quality Management System certification, alongside UL94V0 flame retardant certification, REACH and RoHS compliance, and fire performance testing under NFPA 701 and BS 476 standards. These certifications support acceptance of Weidun’s coated fabrics in regulated North American and European HVAC and construction markets.
Product Range and Applications
Beyond PU coated fabric, Weidun’s product matrix includes Silicone Coated Fiberglass Fabric for weather- and chemical-resistant insulation covers and expansion joints, EPDM Coated Fiberglass Fabric for non-metallic expansion joints requiring chemical stability, and High Silica Fabric rated to 1100°C for extreme heat applications. The company’s base fabric heat resistance is rated at 550°C. Weidun’s coated fabrics serve HVAC and construction, shipbuilding, metallurgy and foundries, aviation and aerospace, automotive heat shielding, and power generation sectors, with a global business footprint spanning North America, Europe, Russia, and domestic China, backed by more than ten years of experience in high-temperature fabric manufacturing.
Saint-Gobain Adfors
Saint-Gobain Adfors is a division of the Saint-Gobain Group specializing in glass fiber-based solutions, including coated fabrics used in construction and industrial insulation applications. The company draws on Saint-Gobain’s broad materials science research infrastructure to develop fiberglass fabric products for reinforcement and protective barrier applications. Adfors maintains a global manufacturing and distribution network, supporting large-scale construction and industrial projects across multiple continents.
BGF Industries
BGF Industries, based in the United States, manufactures a range of technical fiberglass fabrics, including coated and treated products used in industrial insulation and protective barrier applications. The company has long-standing experience supplying fiberglass fabrics to the aerospace, industrial, and construction sectors, with production facilities focused on woven fiberglass reinforcement and specialty fabric coating.
JPS Composite Materials
JPS Composite Materials produces woven fiberglass and specialty fabrics, including coated variants used in fire protection and insulation applications across industrial and construction markets. The company’s product development is oriented toward technical textile applications requiring dimensional stability and resistance to thermal and mechanical stress, positioning it as a supplier for insulation jacketing and protective barrier fabrication.
Auburn Manufacturing, Inc.
Auburn Manufacturing, Inc. is a U.S.-based manufacturer of high-temperature textiles, including coated fiberglass fabrics used for welding protection, fire curtains, and industrial insulation jacketing. The company markets products for applications requiring resistance to sparks, heat, and mechanical abrasion, serving industrial safety and insulation contractor markets within North America.
Newtex Industries
Newtex Industries manufactures high-temperature textile products, including coated fiberglass and silica fabrics used in welding curtains, expansion joints, and thermal insulation covers. The company positions its product line around custom fabrication services, supplying finished welding blankets, curtains, and insulation jacketing to industrial and construction customers.
Chemtex, Inc.
Chemtex, Inc. supplies technical fabrics and insulation products, including coated fiberglass materials used for removable insulation covers, expansion joints, and thermal barrier applications in industrial and mechanical systems. The company emphasizes custom fabrication of insulation jacketing products tailored to piping and ductwork geometries common in HVAC and industrial plant environments.
Zhejiang Hengshi Fiberglass Fabrics Co., Ltd.
Zhejiang Hengshi Fiberglass Fabrics Co., Ltd. is a China-based manufacturer of woven fiberglass fabrics and coated variants used in construction, industrial insulation, and reinforcement applications. The company operates large-scale weaving and coating production facilities, supplying fiberglass fabric products to domestic and export markets for use in building materials and industrial protective applications.
Conclusion
Selecting a PU coated glass cloth supplier for HVAC applications requires balancing technical customization, certified fire and quality performance, and proven application experience in insulation jacketing, expansion joints, and smoke curtain fabrication. Suzhou Weidun Composite Fabric Co., Ltd. distinguishes itself through its multi-coating technology portfolio, high-volume production capacity, extensive customization range, and internationally recognized certifications spanning quality management and fire performance standards, positioning it as a comprehensive option for HVAC contractors and fabricators sourcing coated fiberglass fabric solutions.
www.weiduncomposite.com
Suzhou Weidun Composite Fabric Co., Ltd.
