Fiberglass Cornice (FRP) | Custom Architectural Crown Molding
Exterior Architectural Cornice for Residential & Commercial Projects
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Architectural Specifications:
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What is FRP?
Fiberglass Reinforced Polymer (FRP) is a lightweight, high-strength alternative to traditional materials like stone or concrete. With a minimum wall thickness of 3/16″, our FRP cornice moldings are engineered to be among the strongest and most durable in the architectural industry.
Because fiberglass is lightweight, it reduces the need for costly structural reinforcement, unlike heavier options such as stone or GFRC. This translates to major savings on engineering, materials, and installation time.
Each cornice is manufactured with a marine-grade gel coat finish, available in standard white or custom-matched colors — including stone-like textures. Many of our products ship pre-finished and ready to install, lowering labor costs and reducing your project’s carbon footprint.
At Architectural Mall, we specialize in both standard and custom fiberglass cornice profiles. Whether you’re replicating a historic design or creating something new, we can manufacture to your exact specifications — without sacrificing authenticity or increasing cost. Custom pricing is typically in line with our standard options.
Fiberglass cornice (FRP) is the perfect choice for high-performance, lightweight, and cost-effective architectural crown molding. It offers strength, durability, and versatility compared to traditional materials like stone or wood.
Learn more about our GFRC Cornice and Polyurethane Cornice options to explore additional materials and finishes.
How is FRP Cornice Made?
Every custom fiberglass cornice we produce begins with a collaborative design process. We work directly with architects, designers, and builders to determine exact specifications and project requirements. Once finalized, we use our in-house CNC technology to create detailed molds — even for large profiles — while preserving the most intricate architectural details.
After programming and cutting, the molds are reinforced with fiberglass and carefully polished to prevent surface imperfections from transferring to the final product. Each mold is then coated with a marine-grade white gel coat or a custom-specified finish, followed by multiple layers of chopped fiberglass and resin.
We use high-end chopper systems to ensure uniformity and strength, and all cornices are cured in heated environments to meet our strict quality standards. Once cured, each piece is removed from the mold, cleaned, polished, inspected, and prepared for shipping — ready for a smooth installation at your jobsite.
The advanced manufacturing process ensures FRP cornice is incredibly strong, yet lightweight — ideal for both residential and commercial projects, offering superior performance over heavier materials like GFRC or wood.
What are the Benefits of FRP Cornice?
Our FRP cornice is manufactured with 35–40% fiberglass content, making it pound-for-pound stronger than steel while remaining lightweight and easy to install. This strength-to-weight ratio makes it ideal for both new construction and restoration projects where structural load matters.
We offer several standard cornice profiles, all of which can be fully customized to meet your design requirements — whether you’re matching historic details or creating something modern. Every cornice comes with a factory-applied marine-grade white gel coat, and we also offer a wide range of pre-finished colors and textures.
For projects requiring fire safety compliance, we can provide a Class A fire rating upon request. Best of all, every fiberglass cornice we manufacture is backed by a limited lifetime warranty, giving you confidence in its durability and long-term performance.
With its impressive strength-to-weight ratio, fiberglass cornice is 80% lighter than GFRC, making it easier to install and more cost-effective. It also offers Class A fire ratings, UV resistance, and a long-lasting finish that’s perfect for exterior applications.
To compare materials side by side, visit our Architectural Cornice Overview page for detailed information on fiberglass, GFRC, and polyurethane options.
Fiberglass Cornice Technical Specifications
| Specification | Details |
|---|---|
| Ideal Use | Exterior and interior architectural cornice projects requiring high strength detailed profiles and low weight |
| Material Composition | 35–40% fiberglass reinforced polymer in marine-grade polyester resin |
| Wall Thickness | Minimum 3/16 inch (4.8 mm) — stronger and lighter than concrete or stone |
| Typical Lengths | 8 to 12 feet; custom lengths available |
| Weight | Approximately 80% lighter than GFRC and 90% lighter than stone |
| Factory Finish | Marine-grade white gel coat; prefinished colors and stone textures available |
| Strength | Pound-for-pound stronger than steel; no filler materials used |
| Fire Rating | Class A fire-rated options available |
| Sustainability | May contribute to LEED credits for material efficiency |
| Customization | Fully custom profiles available at standard pricing |
| Warranty | Limited lifetime warranty |
What is fiberglass cornice (FRP)?
Fiberglass Reinforced Polymer (FRP) cornice is architectural crown molding made from fiberglass and marine-grade resin. With 35–40% fiberglass content and a minimum wall thickness of 3/16 inch, it delivers superior strength while remaining lightweight and weather-resistant — ideal for exterior projects.
How much does fiberglass cornice cost?
Pricing varies based on size, profile, and finish. Most standard and custom profiles are similarly priced — contact us for an exact quote.
Can fiberglass cornice be painted or does it come pre-finished?
Both! Each FRP cornice ships with a marine-grade white gel coat that accepts paint beautifully. We also offer prefinished options in custom colors and stone-like textures to reduce on-site labor.
How long does FRP cornice last?
Fiberglass cornice typically lasts 40–60 years or more with minimal maintenance. It won’t rot, crack, or warp like wood and is backed by our limited lifetime warranty.
Is fiberglass cornice better than GFRC or polyurethane?
Yes — FRP offers the best strength-to-weight ratio, requiring no structural reinforcement and installing much faster. GFRC is heavier and used when a stone look is needed, while polyurethane works best for interior budget projects.
How is fiberglass cornice installed?
FRP installs using standard construction adhesive and mechanical fasteners. Because it’s lightweight, no extra framing is required — saving time and labor. Check out our installation page, where you will find the Cornice Installation video.
Can you make custom fiberglass cornice profiles?
Absolutely! We specialize in custom profiles and replications of historic designs at no additional cost. Simply send us your drawings or photos for a quote.
Does FRP cornice meet fire safety codes?
Yes, Class A fire-rated fiberglass cornice is available to meet commercial building requirements. Our standard FRP also offers excellent fire resistance and durability.
What Our Customers Say
⭐⭐⭐⭐⭐“We replaced a deteriorated stone cornice with a fiberglass FRP cornice from Architectural Mall. Their attention to detail made this the first historic-preservation project in our city where fiberglass successfully replicated original stonework. Sergey was an excellent resource for technical guidance, and the final result exceeded expectations.” – Tom Miller – 2024
⭐⭐⭐⭐⭐ “We were renovating a historic building and needed new brackets to match the original cornice details. Architectural Mall recreated the components perfectly, and the project came together beautifully. Sergey delivered exactly what was promised.” – Craig Yadon – 2021
Why Choose Architectural Mall for Fiberglass Cornice
For over two decades, Architectural Mall, Inc. has been a trusted U.S. manufacturer of architectural columns, balustrades, cornices, and other custom components. Since 2001, we’ve helped architects, builders, and homeowners bring their design visions to life with precision-made fiberglass, FRP, and polyurethane products. Our fiberglass cornice systems are manufactured in-house using advanced CNC technology, ensuring every profile meets exacting design standards. Because we control the entire process — from mold creation to finishing — you receive consistent quality, faster lead times, and full customization at no additional cost. We back each product with a limited lifetime warranty, nationwide shipping, and technical support from experienced fabricators. Whether you’re replicating a historic design or creating something new, you’ll benefit from our expertise, reliability, and customer-first approach.
Ready to Get Started?
If you have questions, need a personalized quote, or want to request product samples or color charts, our team is here to help.
You can call us at 877-279-9993, send us an email, start a live chat with one of our product experts, or contact us here through our website form. For architects and designers, be sure to visit our specs and CAD drawings section to browse over 200 fiberglass cornice profiles and download technical files for your project.