United States Fiber Glass Market By Glass Type (E-Glass, ECR-Glass, H-Glass, AR-Glass, S-Glass), By Product Type (Glass Wool, Direct & Assembled Roving, Yarn, Chopped Strand), By Application (Composites, Insulation), By Region, Competition, Forecast & Opportunities, 2021-2031F

Forecast Period	2027-2031
Market Size (2025)	USD 15.88 BIllion
CAGR (2026-2031)	5.41%
Fastest Growing Segment	Chopped Strand
Largest Market	West
Market Size (2031)	USD 21.78 BIllion

Market Overview

The United States Fiber Glass Market will grow from USD 15.88 BIllion in 2025 to USD 21.78 BIllion by 2031 at a 5.41% CAGR. Fiberglass is a reinforced material composed of fine glass fibers embedded within a resin matrix, widely valued for its high strength-to-weight ratio and thermal insulation properties. The United States market is primarily driven by the construction sector's enduring requirement for energy-efficient insulation and the automotive industry's increasing adoption of lightweight components to enhance fuel economy. According to the American Composites Manufacturers Association, in 2024, domestic sales for glass-reinforced composites in the U.S. and Canada totaled approximately 1.88 billion pounds during the first two quarters.

Despite these strong foundational drivers, the industry faces a significant hurdle regarding intense foreign competition. Manufacturers in the United States encounter substantial pricing pressure from international producers, particularly those in China, which can constrain domestic market share and profit margins. This competitive landscape creates a challenging environment for local expansion even as the overall demand for sustainable and high-performance materials continues to rise across key industrial sectors.

Key Market Drivers

The rapid expansion of wind energy infrastructure acts as a primary catalyst for the United States fiber glass market, necessitating vast quantities of high-strength, lightweight composite materials for turbine manufacturing. As federal incentives accelerates the transition to renewable power, the demand for fiberglass-reinforced plastic (FRP) in manufacturing longer, more durable wind blades has intensified to support upcoming offshore and land-based projects. Manufacturers are increasingly relying on these composites to withstand harsh environmental conditions while maximizing aerodynamic efficiency. According to the American Clean Power Association, June 2024, in the 'Offshore Wind Market Report 2024', the United States now possesses a project pipeline totaling more than 58 GW of expected capacity across 37 leases, underscoring the immense material requirements essential for this sector's development.

Simultaneously, the strict implementation of building energy efficiency codes is fundamentally reshaping the construction landscape, driving sustained consumption of fiberglass insulation in both residential and commercial structures. Stricter environmental regulations and the push for decarbonization have compelled builders and homeowners to prioritize superior thermal performance, creating a robust retrofit market. According to the North American Insulation Manufacturers Association, October 2024, in the 'ICF Report', recent research revealed that 89 percent of U.S. single-family homes are currently under-insulated compared to modern energy code baselines, highlighting a critical gap that fiberglass products must fill. This surge in demand is financially evident; according to Owens Corning, November 2024, in the 'Q3 2024 Financial Results', net sales for their insulation segment increased by 4% to reach $946 million for the quarter, reflecting the sector's resilience and continued growth.

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Key Market Challenges

Intense foreign competition, particularly from low-cost producers in China, stands as a formidable barrier hampering the growth of the United States Fiber Glass Market. International manufacturers often benefit from subsidized production environments and lower labor costs, allowing them to export materials at prices that undercut domestic rates. This price disparity forces United States manufacturers to either compress their profit margins to unsustainably low levels or surrender market share to overseas rivals. Such financial pressure restricts the capital available for local facility expansion and innovation, effectively stalling the domestic industry’s ability to capitalize on rising demand from the construction and automotive sectors.

The negative impact of this competitive landscape is evident in recent performance metrics which indicate a contraction in the domestic market despite foundational demand. According to the American Composites Manufacturers Association, in 2024, year-to-date domestic sales for total glass-reinforced composites in the U.S. and Canada declined by 4.7% compared to the previous year. This reduction highlights how the influx of aggressively priced imports directly erodes domestic volume, causing the local market to shrink even as the application scope for these materials widens globally.

Key Market Trends

The accelerated adoption of lightweight fiberglass composites in electric vehicles is fundamentally altering the automotive material landscape in the United States. As automakers transition from internal combustion engines to battery-electric platforms, the imperative to offset heavy battery packs has made weight reduction a critical design priority. Fiberglass-reinforced polymer (FRP) offers a cost-effective high-strength alternative to traditional metals, enabling manufacturers to extend vehicle range without compromising structural integrity or safety standards. This shift is maintaining demand stability within the sector despite broader economic headwinds. According to the American Composites Manufacturers Association, August 2024, in the 'Industry Statistics Program Report', domestic sales for glass-reinforced composites in the transportation sector reached approximately 435 million pounds in the first half of 2024, reflecting the sustained reliance on these materials for next-generation vehicle architectures.

Simultaneously, the proliferation of fiberglass solutions in prefabricated and modular construction is creating a new, expanding vertical for the market. Distinct from the demand for loose insulation, this trend involves the integration of structural FRP profiles, panels, and modular units that facilitate off-site manufacturing and rapid on-site assembly. These composite components provide essential benefits for modular builds, including corrosion resistance, architectural versatility, and reduced transportation weight compared to concrete or steel alternatives. The uptake of these structural materials is statistically significant; according to the American Composites Manufacturers Association, August 2024, in the 'Industry Statistics Program Report', year-to-date domestic sales for the construction segment rose by 7.1% to nearly 629 million pounds, highlighting the sector's robust pivot toward composite-based building technologies.

Segmental Insights

In the United States Fiber Glass Market, the Chopped Strand segment is the fastest-growing category, primarily fueled by the automotive industry's requirement for lightweight materials. Manufacturers utilize these strands to reinforce high-performance composites, replacing heavier metal parts to enhance fuel efficiency without compromising structural integrity. This trend is significantly accelerated by strict federal mandates, including the Corporate Average Fuel Economy (CAFE) standards enforced by the National Highway Traffic Safety Administration (NHTSA). Consequently, the need to comply with these rigorous emission and efficiency regulations ensures a sustained rise in the demand for chopped strand fiberglass.

Regional Insights

The West United States holds the leading position in the United States Fiber Glass Market, supported by strict regulatory frameworks and a dynamic industrial landscape. States within this region, particularly California, enforce aggressive energy efficiency standards like the Title 24 building codes established by the California Energy Commission. These regulations drive significant demand for fiber glass insulation in both residential and commercial sectors. Additionally, the region’s extensive aerospace manufacturing and expanding wind energy infrastructure heavily rely on advanced fiber glass composites, further solidifying the West as the dominant contributor to market expansion.

Recent Developments

• In November 2025, AGY announced a $12.1 million investment to expand its specialty glass fiber manufacturing operations in Aiken County, South Carolina. The company detailed that this capital project would significantly increase the production capacity of low-dielectric constant and low-dissipation factor glass fibers, which are critical components for semiconductor packaging and high-performance electronics. This expansion was designed to support the growing domestic demand for advanced composite materials in the telecommunications and defense sectors, with the upgraded operations expected to commence production in early 2026 to serve the United States market.
• In July 2025, Saint-Gobain North America launched a circular economy initiative to recycle fiberglass insulation fibers between its manufacturing sites in the United States. The program involved transporting waste fiberglass material from the company’s insulation plant in Kansas City, Kansas, to its facility in L'Anse, Michigan, for use as a raw material in the production of acoustic ceiling panels. The company projected that this internal collaboration would divert over 1.5 million pounds of waste from landfills annually, reinforcing its commitment to sustainable manufacturing practices and resource optimization within the competitive fiber glass market.
• In November 2024, Owens Corning announced a strategic capital investment to expand its United States fiberglass insulation network by adding a new production line at its manufacturing facility in Kansas City, Kansas. The company stated that this new capacity, which is expected to become operational in 2027, would utilize advanced manufacturing technology to produce both light and heavy density fiberglass products with a significantly improved cost structure. This development was intended to enhance production flexibility and ensure a robust supply chain to meet the evolving demands of the residential and commercial construction markets across the region.
• In September 2024, Knauf Insulation announced the launch of its residential Performance+™ portfolio of thermal and acoustical fiberglass insulation during the Insulation Contractors Association of America Convention in Chicago. The new product line, which includes EcoBatt® and Jet Stream® Ultra Blowing Wool, achieved the 'asthma & allergy friendly®' certification, marking a significant standard for the industry. The company highlighted that these formaldehyde-free fiberglass products were specifically designed to improve indoor air quality while maintaining superior energy efficiency and acoustic performance for the United States residential housing market, addressing growing consumer concerns regarding healthy home environments.

Key Market Players

• LANXESS Corporation
• Owens Corning
• 3B-the fibreglass company
• Shandong Fiberglass Group Corp
• Nippon Electric Glass Co., Ltd
• Sinoma Science & Technology Co.,Ltd
• Chongqing Polycomp International Corporation
• Berkshire Hathaway Inc
• Saint-Gobain Group
• Jushi USA Fiberglass Co., Ltd

By Glass Type	By Product Type	By Application	By Region
E-Glass ECR-Glass H-Glass AR-Glass S-Glass	Glass Wool Direct & Assembled Roving Yarn Chopped Strand	Composites Insulation	Northeast Midwest South West

Report Scope:

In this report, the United States Fiber Glass Market has been segmented into the following categories, in addition to the industry trends which have also been detailed below:

• United States Fiber Glass Market, By Glass Type:

• E-Glass
• ECR-Glass
• H-Glass
• AR-Glass
• S-Glass

• United States Fiber Glass Market, By Product Type:

• Glass Wool
• Direct & Assembled Roving
• Yarn
• Chopped Strand

• United States Fiber Glass Market, By Application:

• Composites
• Insulation

• United States Fiber Glass Market, By Region:

• Northeast
• Midwest
• South
• West