Known for its superior performance, high customizability, and excellent impact resistance, marine grade acrylic sheet is ideal for various boat applications, such as windows, hatches, and custom enclosures.

Marine Grade Acrylic Sheet
Marine grade acrylic sheet is a clear, durable, and versatile acrylic specially designed for use in marine environments.
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Product Overview
Widely used for:
Performance Characteristics:
Typical Properties of Marine Grade Acrylic Sheet
Common Properties
- Common Brand Names Piedmont Marine Grade® Ultra, AquaGlas, Solar Block, Heat Reflective, Plus
- Typical Thickness Size 0.118, 0.236, 0.354, 0.472, 0.59 in
- Typical Lengths 48, 72, 96, 120 in
- Typical Widths 24, 36, 48, 60 in
- Friendly Names Marine Grade Acrylic, Marine Acrylic, Boat Acrylic, Plexiglass, PMMA
- Common Profiles Sheet, Mirror
Physical Properties
- Density 0.9 - 2.2g/cm^3
- Water Absorption 0.01 - 1.2%
- Moisture Absorption at Equilibrium 0.1 - 0.4%
- Linear Mold Shrinkage 0.1 - 0.8%
- Melt Flow 0.1 - 100g/10 min
Electrical Properties
- Dielectric Strength 16kV/mm
- Dielectric Constant 3.3
- Dissipation Factor 0.02
- Volume Resistivity 1E16ohm·cm
- Surface Resistivity 1E15ohm/sq
- Arc Resistance 150seconds
- Comparative Tracking Index (CTI) 600V
- Thermal Coefficient of Dielectric Constant 0.001%/°C
- Electrostatic Discharge (ESD) Sensitivity Susceptible
- Breakdown Voltage 5kV
Mechanical Properties
- Hardness, Rockwell R 104Rockwell R
- Tensile Strength, Ultimate 70MPa
- Tensile Strength, Yield 65MPa
- Elongation at Break 4%
- Elongation at Yield 3.5%
- Modulus of Elasticity 3000MPa
- Flexural Yield Strength 90MPa
- Flexural Modulus 2800MPa
- Compressive Yield Strength 85MPa
- Bearing Yield Strength 50MPa
- Shear Strength 31MPa
- Izod Impact, Notched 0.45J/cm
- Izod Impact, Unnotched 4.5J/cm
- Gardner Impact 23J
- Falling Dart Impact 27J
- Instrumented Impact Total Energy 20J
Thermal Properties
- CTE, linear 70µm/m°C
- CTE, linear, Transverse to Flow 70µm/m°C
- Deflection Temperature at 0.46 MPa (66 psi) 195°F
- Deflection Temperature at 1.8 MPa (264 psi) 185°F
- Vicat Softening Point 220°F
- Flammability HBUL94
- Max Continuous Operating Temperature in F 160°F
- Minimum Operating Temperature in F - 40°F
- Thermal Conductivity 0.19W/m·K
Regulations
- UL-94 Flame Class
- FDA
- USDA
- FAR 25.853 Flammability
- FAR 25.853 Smoke
- D635 Self Extinguishing
- RoHS Compliant
- REACH Compliant
Literature and Data Sheets
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Piedmont Marine Grade® Acrylics Piedmont PlasticsView
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Piedmont Marine Grade® AquaGlas® Piedmont PlasticsView
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Piedmont Marine Grade® Heat Reflective™ Piedmont PlasticsView
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Piedmont Marine Grade® Marine Enclosure Products Piedmont PlasticsView
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Piedmont Marine Grade® Solar Block™ Piedmont PlasticsView
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Piedmont Marine Grade® Ultra® Piedmont PlasticsView
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Piedmont Plastics® Marine Solutions Brochure Piedmont PlasticsView
Marine Acrylic From Piedmont Plastics
When you're upgrading or customizing a boat, choosing the right materials is essential for both performance and appearance. Marine grade acrylic sheet is a top choice for boat builders and engineers thanks to its outstanding clarity, durability, and weather resistance. Specifically engineered to perform in tough marine environments, these acrylic sheets resist salt, sun, and water damage better than standard plastic or glass, bringing long-lasting performance for your vessel.
For these reasons, marine grade acrylic sheet is commonly used for boat windows, hatches, windshields, and custom enclosures. Acrylic sheet is lightweight yet strong, easy to fabricate, and offers excellent visibility, which are important features when safety and performance matter most. Unlike glass, marine grade acrylic is shatter-resistant and less likely to break under pressure or impact. It also won’t yellow or cloud over time, even after prolonged UV exposure, maintaining a sleek appearance for your boat year after year.
Piedmont Plastics is proud to be a leading supplier of marine grade acrylic sheet across our North American branch network. Whether you're looking to explore our wide range of products or need tailored solutions, we’re here to help.
Ready to get started? Contact us today, and our expert team will provide the support and materials you need for your marine project!


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Key Features of Marine Grade Acrylic Sheet
Impact modified acrylic materials such as Piedmont Marine Grade® (PMG®) acrylics are specially designed for the rigorous demands of the marine industry. Known for their exceptional impact resistance, our acrylic sheet is the preferred choice among leading boat builders. These marine grade acrylics are crafted to provide unparalleled performance, enhancing both the safety and aesthetics of your marine applications.
Key features include:
Unmatched Durability: PMG acrylics are engineered for high impact resistance, significantly reducing the likelihood of breakage from screw insertion and the stresses encountered in marine environments. This makes it an ideal choice for critical applications where reliability is paramount.
Extended Warranty: Backed by an industry-leading 10-year warranty, our PMG Ultra acrylic offers peace of mind, ensuring long-term performance and satisfaction. Each batch is rigorously tested at the factory to maintain consistency and superior fabrication performance.
Light Weight and Versatility: Our marine grade acrylic sheet is half the weight of glass yet offers enhanced durability and flexibility for various custom applications. It can also be easily molded into curved shapes for innovative boat design features.
Variety of Colors: Available in a selection of colors to match the most popular gelcoat options, our PMG Ultra acrylic allows for seamless integration into any boat’s design. This offers boat builders the flexibility to create customized, high-gloss parts that enhance both functionality and aesthetic appeal.
Benefits of Choosing Marine Grade Acrylic
Common Marine Acrylic Applications
Boat Hatches: Marine grade acrylic sheet's clarity and weatherability makes it a popular choice for boat hatches, combining functionality with aesthetic appeal.
Boat Windshields: Thanks to its durability and scratch resistance, marine grade acrylic helps keep boat windshields clear and free from damage over time.
Marine Enclosures: Marine grade acrylic is a terrific choice for creating durable, clear, and stable boat enclosures.
Companionway Doors: Because of its high impact resistance, excellent weatherability, and lightweight design, marine grade acrylic simplifies the handling and installation process.
Consoles: Marine grade acrylic is built to endure heavy impact, making it an essential material for ensuring the long-term durability of boat consoles.
Boat Dash Panels: Due to its durability, marine grade acrylic works well for boat dash panels, allowing the material to withstand the physical demands on boat components.
Boat Cabinetry: Strong and lightweight, marine grade acrylic is well-suited for boat cabinetry, bringing both aesthetic appeal and functional durability.
Related Products
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Cast Acrylic
Cast acrylic from Piedmont Plastics offers exceptional strength, optical clarity, and weather resistance, making it ideal for applications such as signage, retail displays, protective barriers, and architectural glazing.
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Continuous Cast Acrylic
A cost-effective alternative to cell cast sheet, continuous cast acrylic sheet is created by pouring polymerized acrylic onto steel platform, then continually heating and cooling it between highly polished steel plates to control curing and produce an exceptionally clear and stable final product.
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Extruded Acrylic
Extruded acrylic is a durable, lightweight, and optically clear thermoplastic sheet, ideal for architectural glazing, display cases, exhibits, and safety partitions, offering a cost-effective alternative to glass with excellent impact resistance and weatherability.
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Specialty Acrylic Sheet
Acrylic is a highly versatile plastic that is easily fabricated and offers superior clarity and durability in a range of applications. This makes it an ideal choice for products requiring precision, resilience, and a high-end appearance.
Frequently Asked Questions About Marine Grade Acrylic
When selecting materials for marine applications, durability, clarity, and weather resistance are essential. This FAQ addresses the most common questions about marine grade acrylic sheets to help you choose the right solution for your project.
Marine grade acrylic (also referred to as marine grade plexiglass) offers enhanced UV resistance, optical clarity, and durability compared to standard acrylic, making it ideal for applications like boat windshields, windows, hatches, and instrument panels.
Yes, marine grade acrylic is designed with UV inhibitors to resist yellowing and degradation from prolonged sun exposure. High-quality acrylic sheets can maintain their clarity and structural integrity for over a decade with proper maintenance .
While both materials are used in marine settings, marine grade acrylic offers superior optical clarity and scratch resistance. Polycarbonate is more impact-resistant but can scratch more easily and may yellow over time without UV stabilization. Acrylic is often preferred for applications where clarity and aesthetics are paramount .
Yes, marine grade acrylic can be cut and drilled using standard woodworking tools. However, it's essential to use sharp tools and proper techniques to prevent cracking or chipping. Piedmont Plastics offers cut-to-size services and fabrication assistance upon request.
Clean marine-grade acrylic with a mild soap solution and a soft, non-abrasive cloth. Avoid using ammonia-based cleaners, as they can cause hazing or fine scratching. For added protection, consider using a polish designed for acrylic surfaces.
Why Buy Marine Acrylic from Piedmont Plastics?
Piedmont Plastics is at the forefront of the marine acrylic industry, providing high-quality products and comprehensive solutions that support both OEM and aftermarket marine applications. We understand that each boat builder’s needs are unique, and our product line reflects our commitment to catering to these diverse requirements.
With marine acrylic products like PMG Ultra, we offer options that combine superior durability and the versatility needed for innovative marine designs. Learn more about what sets us apart:
Wide Range of Products: Our extensive inventory offers a broad selection of marine grade acrylic sheet to meet the needs of diverse applications.
Precision Cutting and Fabrication: Using advanced CNC technology, we deliver custom cutting and fabrication services, producing materials tailored precisely to your specifications.
Industry-Leading Expertise: Backed by years of hands-on experience, our knowledgeable team is ready to help you select the ideal marine acrylic products for your boat building needs.
Nationwide Availability: With a strong network of branches across North America, we ensure easy access to our high-performance plastic solutions wherever you are.
Superior Quality Standards: Dedicated to delivering excellence, we guarantee that every marine grade product we supply meets or exceeds rigorous industry standards.
Our team of marine experts is ready to assist you with product choices, installation guidance, and after-sales support. Contact us today to discuss how our marine acrylic solutions can elevate your boat-building projects!
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