The global fiberglass market remained under sustained upward pressure during H1 2026 as structural supply constraints intersected with broadening demand. Major Chinese producers, including Jushi and Taishan Fiberglass, undertook furnace cold repairs during the first half, contributing to an overall reduction in available capacity. Energy-intensive production processes faced additional cost pressure from elevated electricity and fuel expenses, which manufacturers found increasingly difficult to absorb without adjusting product offers.
A particularly notable development during H1 was the sharp increase in demand for high-performance specialty glass fibers used in AI hardware, printed circuit boards, and advanced chip packaging. Japan's Nittobo, which controls a substantial part of global T-glass supply, raised prices for these grades by an estimated 20-30%. Overall, a positive price trajectory was observed.
Analyst Insight
According to Procurement Resource, fiberglass prices are expected to remain firm to moderately bullish, supported by capacity constraints and AI-driven demand for specialty fibers, although any easing in energy costs could temper the pace of increases.
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Fiberglass is a material made from very fine strands of glass that are produced as continuous filaments or staple fibres. It combines low weight, good tensile strength, electrical insulation, corrosion resistance, and thermal stability. Commercial fiberglass is supplied as rovings, yarns, chopped strands, mats, fabrics, and wool. E-glass is the most widely used composition, while specialty grades are selected when higher strength, chemical resistance, or electrical performance is required.
China Jushi Co., Ltd., Owens Corning, Taishan Fiberglass Inc., Chongqing Polycomp International Corp. (CPIC), Compagnie de Saint-Gobain SA, Johns Manville Corp., Nippon Electric Glass Co. Ltd., Nitto Boseki Co. Ltd.
Glass fiber, Fibrous glass, Glass, oxide, chemicals
CurrencyUS$ (Data can also be provided in local currency)
Supplier Database AvailabilityYes
Customization ScopeThe report can be customized as per the requirements of the customer
Post-Sale Analyst Support360-degree analyst support after report delivery
Note: Our supplier search experts can assist your procurement teams in compiling and validating a list of suppliers indicating they have products, services, and capabilities that meet your company's needs.
Fiberglass Production by Melting and Fiber Drawing: Fiberglass is produced by melting silica sand with limestone, soda ash, alumina, and other mineral ingredients in a high-temperature furnace. The molten glass passes through platinum-alloy bushings containing many small holes, forming fine continuous filaments. These filaments are rapidly cooled and coated with a sizing material to improve handling and bonding. They are then gathered into strands and processed into rovings, yarns, chopped strands, mats, fabrics, or insulation products.
Fiberglass is widely used to reinforce plastics in automotive parts, wind turbine blades, pipes, tanks, boats, and construction panels. Glass wool is used for thermal and acoustic insulation in buildings, HVAC systems, and industrial equipment. Woven fabrics, mats, and rovings are used in composite structures for aerospace, marine, electrical, and sporting goods applications. Its strength-to-weight ratio, corrosion resistance, and electrical insulating properties make it suitable for demanding industrial environments.
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