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Fiberglass Manufacturing Companies

Last updated: January 2026

This directory lists 102 fiberglass manufacturing companies across the United States, from manual wet lay-up shops specializing in custom marine parts to advanced facilities leveraging automated filament winding and pultrusion for high-volume structural components.

Buyers engage these manufacturers to solve diverse challenges, from producing lightweight, high-strength structural elements for aerospace and automotive applications to crafting durable, corrosion-resistant enclosures and aesthetic panels. Key technical considerations often revolve around achieving specific strength-to-weight ratios, navigating complex geometries, ensuring consistent gel coat application, and managing post-cure distortion.

Suppliers in this space vary significantly. Some focus on large-scale open molding for architectural features or boat hulls, while others specialize in more controlled processes like vacuum bagging or Light RTM for precision parts. You'll find companies dedicated to continuous processes like pultrusion for constant cross-sections, and others offering specialized hand lay-up services for bespoke, low-volume projects requiring intricate detailing and unique composite layup structures.

To ensure a successful partnership, buyers should come prepared with detailed CAD models, material specifications (e.g., type of resin, fiber architecture), critical dimensions and tolerances, expected annual volume, and any specific surface finish requirements. Suppliers will expect clear engineering drawings and a defined scope of work to accurately assess project feasibility and provide a comprehensive quote, often inquiring about expected tooling life and budget early in the discussion.

102 companies·73 emails·92 phones

Company Directory

102 companies nationwide

Davidson, NC

Based in Davidson, NC, 3A Composites USA manufactures various composite panels and materials. The company provides aluminum composite materials, including Alucobond®, for architectural, graphic display, and corporate identity applications. They also develop lightweight composites for the industry and transport sectors, serving vehicles, marine, furniture, and general construction.

ACP Composites is a direct provider and source for high-quality fiberglass products, including E-glass and S-glass fabrics, sheets, and sandwich panels. The company offers comprehensive manufacturing services, from pre-production to post-production, utilizing their own facilities and equipment to produce advanced composite materials for various industrial applications.

Santa Ana, CA

Based in Santa Ana, CA, ADV Fiberglass specializes in expert fiberglass manufacturing services. They offer comprehensive solutions including 3D scanning, CAD design, and private label production. The company focuses on high-quality fiberglass components primarily for the off-road automotive industry, serving both individual customers and dealers.

Mineral Wells, TX

Associated Fiberglass Enterprises, based in Mineral Wells, TX, offers comprehensive fiberglass manufacturing services. Specializing in standard, custom, and specialty products since 1959, they provide a complete package from concept and drafting through mold making, fabrication, assembly, and delivery.

La Crosse, WI

Advanced Fiber Products, located in La Crosse, WI, manufactures standard and custom fiberglass pultrusions. The company offers complete pultrusion fabrication and painting services, supported by an engineering and CAD-equipped design team. Their fiberglass products provide superior corrosion resistance, high strength, and low weight for various industrial applications.

Houston, TX

Based in Houston, TX, AIMS Composites manufactures advanced fiberglass reinforced polymer (FRP) products. They specialize in MASH TL-4 compliant, stainless steel reinforced FRP Life Rail Systems. These offer superior strength, corrosion resistance, and electrical non-conductivity, serving demanding infrastructure applications.

Henderson, NV

American Grating, based in Henderson, NV, is a manufacturer of Fiberglass Reinforced Plastic (FRP) products. They specialize in a range of solutions including grating, structural beams, angles, and rebar. Serving industrial and commercial markets, the company provides durable, corrosion-resistant components for various applications.

Fresno, CA

Based in Fresno, CA, American Fiberglass Corporation custom fabricates and manufactures reinforced fiberglass plastics (FRP) products. They specialize in open mold (hand lay-up), closed mold (RTM), and tooling services. Serving diverse industries like automotive, industrial, marine, and architectural, the company delivers high-quality, cost-effective custom fiberglass solutions.

Huntington Beach, CA

Apex Space & Defense Systems, based in Huntington Beach, CA, provides composite manufacturing services with over 40 years of experience. They specialize in filament wound and hand laid up composites, serving defense, space, and mission-critical markets. The company operates 300,000 square feet of manufacturing facilities.

Lake Forest, CA

Based in Lake Forest, CA, Applied Composites operates a 140,000 sq.ft. facility specializing in composite layup and manufacturing. The company provides advanced composite solutions, including fiberglass components, for various industrial applications. They offer comprehensive capabilities from design to production for B2B customers.

Waco, TX

Based in Waco, TX, Waco Composites specializes in manufacturing UL 752 certified bullet-resistant fiberglass wall panels. They use a proprietary process merging woven-roving fiberglass with resin. These composite panels serve diverse sectors including commercial, government, healthcare, military, and residential for security applications.

Blackville, SC

Augusta Fiberglass, based in Blackville, SC, manufactures custom designed and fabricated Fiberglass Reinforced Plastic (FRP) tanks, duct, scrubbers, stacks, and liners. An RTP-1 fabricator, they provide solutions for complex issues for power generation, pulp and paper, wastewater, and chemical processing industries.

Belding, MI

Based in Belding, MI, Belding Tank Technologies manufactures custom fiberglass tanks. The company specializes in producing various vertical and horizontal tank models, built to precise client requirements. With dedicated facilities and a focus on quality and customer service, they serve industrial and commercial needs.

Danville, VA

Based in Danville, VA, BGF Industries is a US manufacturer of innovative technical fiber materials, specializing in glass fabrics. They provide high-strength, high-temperature, lightweight solutions for various global markets, including aerospace, protective composites, and marine industries.

Spring, TX

Based in Spring, TX, Champion Fiberglass, Inc. specializes in manufacturing fiberglass electrical conduit and strut. They supply these crucial fiberglass products to industrial, electrical, and mechanical markets. Champion Fiberglass provides high-performance solutions for demanding commercial and infrastructure applications.

Sanger, TX

Based in Sanger, TX, Classic Fiberglass specializes in custom fiberglass parts and molds. The company provides comprehensive manufacturing services, including prototyping, design, molding, and precision finishing. Serving OEMs, small businesses, and individual clients, they create high-quality, durable fiberglass components for diverse applications.

Everman, TX

CMDT Manufacturing specializes in custom fiberglass manufacturing, mold making, and field services. Based in Everman, TX, the company provides expert fiberglass fabrication and repair solutions. They serve industrial and commercial clients, offering comprehensive services proudly made in the USA.

Warren, OR

Based in Warren, OR, Composites Universal Group specializes in advanced composites manufacturing services. With over 25 years of experience, they offer full-service capabilities including engineering, prototyping, tooling, and production for complex market-driven problems across industries like automotive, medical, and construction.

Creative Composites Group offers extensive fiberglass manufacturing capabilities and expertise in Fiber Reinforced Polymer (FRP) composites. Their comprehensive services span design/build, manufacturing, and structural fabrication of highly-engineered composite systems. The company specializes in advancing infrastructure markets with tailored composite solutions.

Diamond Fiberglass is an ASME RTP-1 certified fabricator based in Victoria, TX, specializing in designing and manufacturing Fiberglass Reinforced Plastic (FRP) vessels, piping systems, and tanks. They provide engineer-to-order solutions for corrosive environments, serving power, chemical, food processing, municipal, and water/wastewater industries.

Sacramento, CA

Based in Sacramento, CA, DT Fiberglass specializes in high-quality, custom fiberglass manufacturing. They engineer durable and efficient OEM solutions for aquaculture, agriculture, and harvest hauling. The company also serves industrial, communications, water filtration, transportation, and restoration needs, providing comprehensive fiberglass products and services.

Corona, CA

Based in Corona, CA, Eco Pultrusions manufactures and supplies pultruded fiberglass and customized FRP profiles. The company provides a variety of standard profiles and offers OEM services for glass fiber composites, tailored to client specifications. They also assist with design, engineering, and testing for pultrusion applications.

Camdenton, MO

Based in Camdenton, MO, Fiberglass Tank Solutions manufactures standard and custom Fiberglass-Reinforced Plastic (FRP) tanks. They provide durable, corrosion-resistant liquid storage solutions, including underground water and petroleum tanks, for diverse industrial and municipal applications. FTS offers turnkey systems, piping, and anti-flotation solutions.

Cleveland, OH

Based in Cleveland, OH, Architectural Fiberglass, Inc. designs and manufactures custom decorative architectural fiberglass products. The company specializes in creating fiberglass columns, cornices, domes, cupolas, balustrades, and religious ornaments for restoration, reproduction, and new construction projects. They also offer fiberglass restoration services.

Rock Island, IL

Based in Rock Island, IL, Fiberglass Reinforced Plastic Duct Company manufactures high-strength, lightweight FRP ducts and exhaust stacks. They offer corrosion-resistant solutions for industrial, water, wastewater, and commercial HVAC applications. Specializing in UnderDuct and Corrosion Composites, their systems feature a Class 1 flame rating for durability in harsh environments.

Fiberglass Grating Systems provides custom fabrication and engineering solutions for Fiberglass Reinforced Polymer (FRP) products. With an in-house facility featuring precise waterjet cutting, the company manufactures industrial items like molded and pultruded FRP grating, structural shapes, handrail systems, and ladder systems.

Nacogdoches, TX

Based in Nacogdoches, TX, Fiberglass of Texas specializes in crafting top-quality fiberglass products. The company provides fiberglass repair services for motorhomes and marine vessels, alongside custom fiberglass fabrication. They aim to deliver quality service to customers across the United States for various applications.

Stephenville, TX

Fibergrate Composite Structures manufactures fiberglass reinforced plastic (FRP) solutions for industrial and commercial use. They produce lightweight FRP grating, railing, and structural products designed for challenging environments. These durable products require less maintenance than traditional materials, providing long-lasting solutions for contractors and architects.

Formed Fiberglass is a custom fiberglass manufacturer located in Fombell, PA, with over 50 years of experience. The company provides high-quality custom fiberglass components for diverse industries, including racing, automotive, architectural, transportation, water treatment, and various industrial applications.

Kansas City, MO

Based in Kansas City, MO, Forte Products specializes in custom plastic and fiberglass molding. With over 50 years of experience, the company provides fiberglass, rotational, injection, and thermoform molding services. They serve diverse B2B industries, including marine, agriculture, and architectural lighting, delivering custom-engineered parts.

Eldorado, TX

Based in Eldorado, TX, G & G Fiberglass specializes in custom fiberglass manufacturing. The company produces a wide range of fiberglass products, including their well-known Pot Belly deer blinds, and various sizes of fiberglass tanks and troughs.

San Bernardino, CA

Based in San Bernardino, CA, Golden State Grating, Inc. is a family-owned business specializing in the manufacturing and fabrication of steel, aluminum, stainless, and fiberglass gratings. They also provide expanded/perforated metal, wire mesh, and safety grating, focusing on service and innovative solutions for industrial clients.

Tolleson, AZ

Grating Pacific fabricates and supplies fiberglass, metal bar, and aluminum grating. Additionally, the company offers woven and welded wire mesh, perforated metal, and expanded metal solutions. With over 50 years of industry experience, Grating Pacific serves commercial and industrial clients throughout the Western United States.

Azusa, CA

Hannemann FiberGlass INC, based in Azusa, CA, is a seasoned fiberglass manufacturing company with over 40 years of industry experience. They specialize in producing fiberglass products, serving various sectors. Their long-standing presence establishes them as a reliable provider in the fiberglass business.

Holland Fiberglass & Restoration, LLC, based in Montoursville, PA, provides custom fiberglass fabrication, molding, repair, and restoration services. They offer painting for boat hulls, auto parts, RVs, motorcycles, golf carts, and architectural elements, serving marine, automotive, recreational vehicle, and theme park industries.

Melrose Park, IL

Based in Melrose Park, IL, Industrial Fiberglass Inc. is a USA-made manufacturer of custom industrial fiberglass (FRP) products, including tanks, ductwork, containment, and covers, since 1969. They specialize in durable, corrosion-resistant solutions for agriculture, industrial, wastewater, municipal, and food & beverage markets.

Harvey, LA

Based in Harvey, LA, Jefferson Fiberglass designs, builds, and repairs custom fiberglass products. Their offerings span battery boxes, cabinets, enclosures, grease traps, oil interceptors, and fish transport tanks. Serving commercial and household needs across marine, chemical, electrical, and oil and gas industries, they also provide comprehensive repair services.

Etowah, TN

Johns Manville manufactures engineered fiberglass products at facilities in the United States and Europe. Specializing in high-quality fiberglass materials like chopped strands and rovings, the company serves diverse industrial applications. Johns Manville operates its own facilities and workforce, providing direct fiberglass manufacturing solutions.

The Woodlands, TX

KBK Industries specializes in manufacturing fiberglass underground water storage tanks for various industrial and commercial applications. These robust tanks are engineered to store diverse materials, including wastewater, oil, and liquid fertilizer, and are available in different capacities to meet specific client needs.

Giddings, TX

Based in Giddings, TX, LF Manufacturing produces fiberglass-reinforced polymer (FRP) structures and custom components. The company manufactures various tanks, vessels, and piping systems, serving oilfield, industrial, water/wastewater, agricultural, and OEM markets with durable FRP solutions.

Liberty Pultrusions is a U.S. manufacturer of engineered FRP pultrusions. The company specializes in fiberglass reinforced plastics, designing and producing custom pultruded products from its manufacturing facility. They provide quality, cost-effective solutions with precision and expertise for various industrial applications, leveraging over 50 years of experience.

New Braunfels, TX

Based in New Braunfels, TX, Lonestar Fiberglass Components specializes in custom fiberglass and composite manufacturing. They provide services including custom fabrication, precision tooling, prototyping, and high-volume production. The company serves diverse industrial and commercial clients in sectors such as marine, automotive, industrial, and architectural.

Houston, TX

Based in Houston, TX, Marco Specialty Steel provides custom metal and FRP (Fiberglass Reinforced Plastic) fabrication services. They offer in-house fabrication of various stock products to exact specifications, including industrial steel, metal products, wire cloth, catalyst support screens, and custom-cut safety grating for industrial projects.

Santa Fe Springs, CA

Based in Santa Fe Springs, CA, Marlite manufactures Fiberglass Reinforced Plastic (FRP) panels. The company specializes in interior wall systems for commercial markets, offering various FRP finishes, trim options, and standard panel dimensions.

San Marcos, CA

Based in San Marcos, CA, MGM Plastics is a family-owned custom fabrication shop established in 1980. They provide expert fiberglass services, including fabrication and reinforcement, delivering tailored solutions. The company also offers plastic fabrication, machining, and welding for commercial and industrial clients across Southern California and Nevada.

Ashtabula, OH

Based in Ashtabula, OH, Molded Fiber Glass Co. specializes in custom molding Fiberglass Reinforced Plastic (FRP) composites. They utilize diverse processes including compression molding, RTM, pultrusion, and vacuum infusion. MFG serves industries like automotive, heavy truck, wind energy, and defense, providing engineered solutions for complex composite parts.

Marion, SC

Based in Marion, SC, Nationwide Tanks manufactures underground fiberglass fuel tanks and UL 2447-approved sumps. They are the sole US manufacturer providing UL 1316 Third Edition compliant tanks, serving the underground fuel and water market, including the C-Store Industry.

Orange, CA

Old Town Fiberglass, based in Orange, CA, specializes in custom fiberglass manufacturing. The company offers tailor-made designs and colors, providing quick service and delivery for projects. It serves commercial clients, including landscape architects and site design studios, for various custom fiberglass applications.

Stanton, CA

Pacific Aerospace Corp, based in Stanton, CA, specializes in manufacturing advanced composite components and assemblies. They provide precision machining, tooling, and assembly services, primarily for aerospace. The company is certified for aerospace parts made of carbon fiber and holds AS9100 and ITAR compliance.

Riverside, CA

Based in Riverside, CA, Painted Rhino is a custom fiberglass fabrication and composite parts manufacturing company. They specialize in bringing client visions to life from prototype to product, offering solutions for design and volume production across diverse markets, including aerospace, automotive, and entertainment.

Compton, CA

Based in Compton, CA, Performance Composites Inc. manufactures engineered composite and fiberglass products. The ISO 9001:2015 certified company offers high quality, cost-effective fiberglass and composite parts, delivering value-engineered solutions. They serve large OEM customers as a strategic supplier, with experience in defense drone cases.

Creedmoor, TX

Based in Creedmoor, TX, PPE Tanks engineers and builds custom FRP (Fiberglass Reinforced Plastic) and steel storage tanks, including fiberglass pressure vessels. They serve the water, wastewater, and chemical industries, holding ASME and API certifications. The company is a US SBA Certified Woman-Owned Small Business.

Springfield, IL

Precision Tank manufactures fiberglass tanks for various industries. All tanks are proudly made in the United States at their Ligonier, Indiana facility, meeting high industry standards. They provide custom solutions for commercial and industrial clients, specializing in durable and reliable fiberglass products.

Odessa, TX

Based in Odessa, TX, Reed Fiberglass Inc. specializes in custom fiberglass manufacturing for diverse industrial, oil & gas, agricultural, and commercial applications. They produce fiberglass tanks, custom parts, and offer repair and maintenance services, providing tailored solutions to meet specific client specifications.

West Jordan, UT

Based in West Jordan, UT, Rock West Composites specializes in engineering, developing, and manufacturing advanced composite structures. They provide high-performance solutions for aerospace, defense, and commercial industries, with expertise in radomes, structural panels, and complex components for demanding applications.

Lafayette, LA

Based in Lafayette, LA, Seasafe manufactures molded and pultruded fiberglass reinforced plastic (FRP) products. Their offerings include grating, stair treads, cable trays, and structural shapes. They provide design, engineering, and custom fabrication services for industries such as oil and gas, chemical, and aquatic.

Signature Enclosures Inc. specializes in manufacturing custom and standard fiberglass enclosures for diverse industrial applications. They produce NEMA 4X and insulated enclosures designed for equipment protection and controlled atmospheres, serving chemical plants, refineries, water treatment, electrical systems, and mass transit sectors.

La Marque, TX

Based in La Marque, TX, Skuta Boats specializes in the manufacturing of custom boats. The company also provides comprehensive fiberglass repair services, leveraging significant expertise in fiberglass fabrication and molding techniques for marine applications.

Bristol, VA

Based in Bristol, VA, Strongwell manufactures pultruded fiberglass and fiber-reinforced polymer (FRP) structural shapes and plates. The company specializes in advanced pultruded composites, offering a wide range of products for industrial and commercial applications through its North American facilities.

San Clemente, CA

Based in San Clemente, CA, Swift Engineering is a specialist in advanced composite manufacturing, producing fiberglass and carbon fiber parts and tools. They provide comprehensive services from prototype to production for aerospace, defense, automotive, energy, and marine industries.

Montgomery, TX

Based in Montgomery, TX, Tank Systems manufactures custom polyethylene and fiberglass tanks for diverse industrial and commercial applications. They produce vertical, horizontal, and specialty tanks, including fire water, chemical, underground, and FRP pressure vessels, serving industries since 1982.

Beasley, TX

Based in Beasley, TX, Texas Superior Tanks LLC is a manufacturer specializing in fiberglass tanks. They provide a diverse range of products, including septic, water, chemical, and oil/gas storage tanks. The company also offers custom fiberglass solutions and fabrication services for industrial and commercial applications.

Springfield, OH

United Fiberglass of America, known as Creative Composites Group (CCG), manufactures highly-engineered Fiber Reinforced Polymer (FRP) composite systems. CCG offers comprehensive services for infrastructure and industrial applications, from design-build and manufacturing processes to structural fabrication and field support.

Somonauk, IL

Based in Somonauk, IL, VALTO Engineered Materials manufactures fiber-reinforced composite materials and fiberglass reinforced plastic (FRP) solutions. The company produces durable and decorative FRP wall panels, exterior sidewall panels for the RV industry, and liner panels for transportation and tough commercial environments.

El Cajon, CA

Waterdog Products Inc., based in El Cajon, CA, is a fiberglass and acrylic tank manufacturer. Specializing in custom fabrication, design, and installation, their products include large-scale aquariums, transport tanks, and various custom fiberglass components. They serve global clients, producing high-quality merchandise using advanced technologies.

Shelby, NC

Based in Shelby, NC, B&W Fiberglass manufactures high-quality fiberglass products with a focus on excellence and innovation. The company serves diverse industrial clients, aiming to improve business operations through reliable production and on-budget, timely delivery, ensuring a positive customer experience and return on investment.

Pampa, TX

W & W Fiberglass Tank Co., based in Pampa, TX, manufactures fiberglass tanks and vessels. Established in 1978, the company utilizes filament winding technology to produce custom and stock tanks up to 1000 barrels, serving oil & gas, farm & ranch, chemical, and environmental industries.

Troy, TX

Based in Troy, TX, XL Fiberglass, LLC. manufactures and custom fabricates FRP (Fiberglass Reinforced Plastic) products. They provide tailored fiberglass solutions for the Water Management, Oilfield, and Chemical Processing industries. The company delivers high-quality products built to specific structural, temperature, and corrosive requirements.

Barrier Reef Fiberglass Pools LLC manufactures one-piece in-ground fiberglass swimming pools and spas. Since 1984, the company has utilized proven gel coats and vinyl ester resins to produce durable, high-quality pools, exceeding industry thickness standards. They distribute to installers across several U.S. states.

Sacramento, CA

Based in Sacramento, CA, IntexForms, Inc. manufactures lightweight, high-performance architectural products. The company specializes in Glass Fiber Reinforced Gypsum (GFRG), Glass Fiber Reinforced Cement (GFRC), and Stone-Tex Glass Fiber Reinforced Stone. They fabricate architectural elements like coffers and domes from their California facilities.

Toledo, OH

Owens Corning is a global leader specializing in insulation, roofing, and composite solutions. The company manufactures various products, including high-performance glass reinforcements for industrial applications. Owens Corning serves a broad range of commercial and industrial B2B customers with its extensive fiberglass manufacturing capabilities.

Troy, MI

National Manufacturing Group is an OEM supplier specializing in custom molded fiberglass reinforced plastic (FRP) and thermoformed plastic components. With seven plants across five states, they utilize diverse FRP molding methods including LRTM, RTM, and compression. Services include prototyping, tooling, class A paint, and full assembly.

Fort Worth, TX

Based in Fort Worth, TX, Stabilit America manufactures and distributes high-quality fiberglass reinforced panels (FRP) for diverse applications. They produce a wide range of products such as exterior fiberglass panels, translucent roof panels, corrugated greenhouse panels, and polycarbonate wall panels, serving commercial and industrial clients.

Oklahoma City, OK

Based in Oklahoma City, OK, AAA Fiberglass Services is a full-service fiberglass reinforced plastic (FRP) shop. They offer custom fiberglass fabrication, tooling, and repair, with both in-shop and field solutions. Services include fabricating pipes, tanks, and structures, alongside installation, sandblasting, and painting for diverse industrial clients.

Andronaco Industries designs and manufactures high-performance specialty polymer and composite-engineered fluid management products. They specialize in innovative engineered fiberglass tanks and fiberglass composites, offering piping, fittings, valves, hoses, and vessels for demanding, corrosive environments.

Based in Bedford, PA, Bedford Reinforced Plastics manufactures fiberglass-reinforced polymer (FRP) products using an advanced pultrusion process. The company offers an extensive line of FRP products and comprehensive services, providing strong and durable solutions. They specialize in full-service FRP solutions for diverse industrial and commercial applications.

San Clemente, CA

Composite Manufacturing, Inc. specializes in producing custom composite components, including fiberglass, with a notable focus on the medical industry. The company offers manufacturing services for businesses requiring high-performance, precision parts tailored to their specifications and critical applications.

Based in North East, MD, Composites USA, Inc. is an FRP manufacturer specializing in tailored, corrosion-resistant composite equipment. They produce fiberglass tanks, ducts, pipes, vessels, and comprehensive systems for industrial applications like chemical storage. Products utilize polyester, vinyl ester, furan, and various dual laminate resins.

Re:Build Composite Resources specializes in advanced composite manufacturing, employing autoclave, out-of-autoclave, and press molding. They provide precision-built composite solutions for commercial aerospace, military, space, medical, and automotive industries. Capabilities include project management, collaborative design, and build-to-print services for high-performance parts.

Canyon Lake, TX

CSC, LLC designs and fabricates custom fiberglass reinforced polymer (FRP) structures for demanding industrial and municipal applications. Specializing in corrosion-resistant, lightweight, and electrically insulating FRP solutions, they serve infrastructure leaders, water & wastewater treatment, and aquaculture industries across the United States.

Sioux Falls, SD

Based in Sioux Falls, SD, Design Tanks specializes in fiberglass tank manufacturing. With six decades of experience, they craft durable and reliable custom fiberglass tanks using modern design, engineering, and manufacturing processes. They serve diverse industrial and commercial clientele.

Tavares, FL

Based in Tavares, FL, ECI (now operating as EJ) designs, engineers, and fabricates custom Fiberglass Reinforced Plastic (FRP) products. The company supplies various stormwater market products and offers flexibility in materials, including fiberglass, aluminum, and steel. ECI also inventories and distributes FRP shapes nationwide.

Washington Court House, OH

Based in Washington Court House, OH, Fiber-Tech Industries, Inc. manufactures Fiberglass Reinforced Composite Panels. Established in 1983, the company serves the US, Canada, and Mexico, providing panel solutions for diverse markets. These include transportation, construction, corrosion, military, shelter, and marine industries.

Salt Lake City, UT

Fiberglass Fabricators, based in Salt Lake City, UT, specializes in fiberglass fabrication, a versatile manufacturing process. They shape and mold fiberglass materials to create various custom products, serving industrial and commercial clients with robust composite solutions for diverse applications.

Rockford, IL

Based in Rockford, IL, Fiberglass Innovations is an American manufacturer specializing in pultruded fiberglass products. They provide custom profiles and resins, including various shapes like I-beams, tubes, and rods. Their offerings feature properties such as non-conductivity and high strength-to-weight ratios, suitable for diverse industrial applications.

Madera, CA

Based in Madera, CA, Fiberglass Unlimited provides comprehensive fiberglass and gelcoat repair services for boats, RVs, and personal watercraft. The company also builds and fabricates new fiberglass agriculture tanks and offers custom fiberglass fabrication. They serve a wide range of clients throughout Central California.

Stockdale, TX

Based in Stockdale, TX, Hydro Composites LLC specializes in custom fiberglass manufacturing and FRP fabrication. They offer comprehensive services including mold making, prototyping, and finishing for diverse industrial, commercial, and marine applications, serving sectors like oil & gas, agriculture, and water treatment.

Dayton, OH

Based in Dayton, OH, Industrial Fiberglass Specialties is a U.S.-based, family-owned manufacturer with over 40 years of experience. They provide fiberglass reinforced plastic (FRP) piping systems, including custom-engineered pipe, fittings, and flanges for demanding industrial and corrosive environments. Products meet applicable industry standards like AWWA and ASTM.

Lake Worth, FL

Based in Lake Worth, FL, Industrial Plastic Systems specializes in custom fabrication of Fiberglass Reinforced Plastic (FRP) and Dual Laminate equipment. They offer engineering, manufacturing, and field services for industrial FRP tanks, ducts, pipes, and vessels, catering to sectors like chemical processing and water/wastewater.

Crowley, LA

Based in Crowley, LA, Kentec Composites manufactures, designs, engineers, and fabricates standard and custom fiberglass (FRP) grating, handrails, ladders, and structural systems. They serve diverse sectors including petrochemical, construction, energy, food, and transportation industries from their ISO 9001 certified facilities.

Sacramento, CA

Based in Sacramento, CA, Morrison Marine specializes in fiberglass and gelcoat repair services, including comprehensive dry rot repair with re-fiberglassing. The company also manufactures marine, industrial, and custom composite components, offering boat restoration and general fiberglass repair solutions.

Based in Bedford, PA, OSCO Safety manufactures fiberglass-reinforced polymer (FRP) structural shapes and pre-engineered modular FRP structures. They provide a comprehensive range of safety and structural solutions, including the ReadySeries line of modular FRP structures, catering to industrial and commercial clients in the US.

San Pablo, CA

Picon FRP, based in San Pablo, CA, manufactures and repairs industrial fiberglass (FRP) products, focusing on anti-corrosion applications. They design, fabricate, and provide field services including installation, relining, and maintenance. Serving Northern California, Picon FRP works with refineries, chemical companies, and wastewater treatment plants.

Joshua, TX

Based in Joshua, TX, Sun Valley Fiberglass is a custom fiberglass manufacturer. The company specializes in custom fabrication, mold making, and prototyping. They serve industrial, commercial, architectural, and marine sectors, delivering high-quality, custom fiberglass solutions from concept to completion.

Amarillo, TX

Based in Amarillo, TX, United Fiberglass Inc. specializes in manufacturing fiberglass water storage tanks, stock tanks, and custom fiberglass fabrication. They serve a range of industries, including agriculture, petroleum, environmental, and wind energy, providing durable and reliable solutions for various applications.

Eugene, OR

Based in Eugene, OR, Western Fiberglass Inc. specializes in high technology FRP (Fiberglass Reinforced Plastic) fabrication and custom fiberglass manufacturing. They provide engineering, design, and production services for industrial applications, including fluid handling systems for wastewater treatment, chemical processing, and oil & gas sectors.

Based in Williamsport, MD, Xerxes manufactures corrosion-resistant fiberglass tanks for fuel storage. Their products are compatible with various fuel types, including traditional petroleum and new biofuels, serving industrial and commercial needs.

Custom Fiberglass Works, Inc. specializes in fiberglass manufacturing and repair services. They produce customized fiberglass molds, septic tanks, water tanks, and water guzzlers. The company also offers boat repair services. With over 30 years of experience, they provide reliable fiberglass solutions for various needs.

Imagine Pools manufactures in-ground fiberglass swimming pools, distributed and installed by local dealers across the United States. With facilities in Kentucky and Georgia, the company produces a wide range of durable and high-quality fiberglass pools, serving the B2B market for residential applications.

Shelton, CT

Based in Shelton, CT, Panolam Surface Systems manufactures Fiberglass Reinforced Plastic (FRP) panels for commercial and industrial applications. The company operates multiple US facilities, producing tough, scratch, stain, and chemical-resistant surfacing solutions. Panolam's FRP panels are engineered for demanding wall protection and high-use commercial settings.

Pearland, TX

Based in Pearland, TX, Progressive Fiberglass Fabricators, Inc. specializes in the custom design and manufacture of fiberglass products. They offer comprehensive fiberglass fabrication services, including repair, prototyping, and large-scale production. Serving diverse industrial, commercial, and marine sectors, they provide tailored solutions for various applications.

Qarbon Aerospace manufactures composite components and assemblies for commercial and military aircraft. With facilities across the globe, this US-based company provides turnkey composite manufacturing solutions for structural and engine component needs, leveraging over a century of aerospace manufacturing experience.

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How to Choose a Company

  • Verify the supplier's specific molding process capabilities; a facility excelling at manual wet lay-up for large, low-volume parts may not have the process control or automation for consistent, high-volume production requiring resin infusion or Light RTM.
  • Assess their tooling expertise and ownership; suppliers who design and build their own molds in-house often offer faster iterations and better control over tooling lead times and quality, which is critical for complex geometries or tight surface finish requirements like Class A gel coat.
  • For applications requiring specific material properties or safety standards (e.g., fire retardancy for transportation, pressure ratings for tanks, or marine vessel integrity), require proof of compliance with relevant standards like ASTM D (specific test methods), UL 94 V-0, DNV GL, or ABS certification.
  • Scrutinize their quality control protocols beyond ISO 9001; inquire about their procedures for monitoring resin-to-fiber ratios, temperature and humidity control during cure cycles, and post-cure inspection methods to minimize voids, delamination, and warpage.
  • Beware of quotes that significantly undercut others without a clear explanation; a common red flag is an artificially low tooling cost that indicates substandard mold construction, leading to premature wear, frequent repairs, and inconsistent part quality over the production run.

Frequently Asked Questions

What is the typical tooling lead time for a fiberglass mold, and how does it impact project timelines?

Tooling lead times for fiberglass molds can range from 4-6 weeks for simple open molds to 12-20+ weeks for complex, multi-piece closed molds (like those for Light RTM or RTM) requiring extensive machining, polishing, and precise fitment. This initial phase is critical; poor tooling quality will plague your entire production, impacting part consistency, surface finish, and demolding efficiency. Factor this lead time into your project schedule explicitly, as it's often the longest upfront delay before actual part production begins.

How does the choice of resin system (e.g., polyester, vinyl ester, epoxy) impact cost and performance in fiberglass manufacturing?

The resin system significantly influences both cost and performance. Polyester resins are generally the most economical and widely used for general-purpose applications like boat hulls or decorative panels, offering good mechanical properties and weather resistance. Vinyl ester resins are more expensive but provide superior corrosion resistance, chemical resistance, and better heat distortion temperature, often chosen for tanks or chemical processing equipment. Epoxy resins are the highest performing and most costly, offering exceptional strength, stiffness, and adhesion, ideal for demanding aerospace or high-performance industrial components where strength-to-weight is paramount. Your application's environmental conditions and structural requirements will dictate the appropriate (and cost-effective) resin choice.

What's the difference between open molding and closed molding, and which is better for part consistency?

Open molding (e.g., hand lay-up, spray-up) involves exposing the laminate to the atmosphere during cure. It's cost-effective for large, low-volume parts but offers less control over part thickness, fiber-to-resin ratio, and emissions. Closed molding (e.g., resin infusion, Light RTM, pultrusion) cures the part within a sealed mold, resulting in superior part consistency, tighter tolerances, lower emissions, and often better mechanical properties. For high-volume production or parts requiring precise dimensions and excellent surface finish on both sides, closed molding is generally the better choice despite higher tooling costs.

When is it necessary to specify post-curing for fiberglass parts, and what does it achieve?

Post-curing involves heating a fiberglass part to an elevated temperature after initial demolding. It's crucial when your application demands the full mechanical properties or chemical resistance of the resin system. Most resins achieve about 80% of their properties at ambient cure; post-curing drives the chemical reaction to near completion, maximizing the resin's cross-linking. This process significantly improves hardness, strength, stiffness, heat distortion temperature, and chemical resistance. Always specify post-curing if your part will experience high temperatures, significant loads, or exposure to harsh chemicals in its end-use environment, even though it adds to production time and cost.

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