A strong, lightweight, and weatherable plastic sheet ideal for marine, outdoor, and high-humidity applications due to its durability and ease of fabrication.

Marine-Grade PVC Foam Sheet
A durable, lightweight, and moisture-resistant PVC foam material.
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Fabrication Support
Cut-to-Size, Routing
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Local
Inventory Stocking
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National
Inventory Access
Product Overview
Widely used for:
Performance Characteristics:
Typical Properties of Marine-Grade PVC Foam Sheet
Common Properties
- Common Brand Names Aqua Plas 1 Ultra, Aqua Plas 3 Ultra LG, Seaboard Endurabond
- Typical Thickness Size 0.25, 0.5, 0.75, 1 in
- Typical Lengths 48, 96, 120 in
- Typical Widths 24, 48 in
- Friendly Names PVC Foam, Expanded PVC
- Common Profiles Sheet
Physical Properties
- Density 0.95 - 1.2g/cm³
- Water Absorption 0.3 - 0.5%
- Moisture Absorption at Equilibrium 3.0 - 4.0%
- Linear Mold Shrinkage 0.4 - 2.0%
- Melt Flow 5 - 30g/10 min
Electrical Properties
- Dielectric Strength 15.7kV/mm
- Dielectric Constant 2.9
- Dissipation Factor 0.015
- Volume Resistivity 1.0E+15ohm·cm
- Surface Resistivity 10000000000000ohm/sq
- Arc Resistance 120seconds
- Comparative Tracking Index (CTI) 600V
- Thermal Coefficient of Dielectric Constant - 0.02%/°C
- Breakdown Voltage 157kV
Mechanical Properties
- Hardness, Rockwell R 90HRR
- Tensile Strength, Ultimate 60MPa
- Tensile Strength, Yield 45MPa
- Elongation at Break 10%
- Elongation at Yield 4%
- Modulus of Elasticity 3000MPa
- Flexural Yield Strength 55MPa
- Flexural Modulus 3200MPa
- Compressive Yield Strength 50MPa
- Bearing Yield Strength 100MPa
- Shear Strength 40MPa
- Izod Impact, Notched 100J/m
- Izod Impact, Unnotched 900J/m
- Gardner Impact 15J
- Falling Dart Impact 25J
- Instrumented Impact Total Energy 20J
Thermal Properties
- CTE, linear 60µm/m°C
- CTE, linear, Transverse to Flow 40µm/m°C
- Deflection Temperature at 0.46 MPa (66 psi) 70°C
- Deflection Temperature at 1.8 MPa (264 psi) 60°C
- Vicat Softening Point 85°C
- Flammability, UL94 V - 0
- Max Continuous Operating Temperature in F 140°F
- Minimum Operating Temperature in F - 40°F
- Thermal Conductivity 0.035W/mK
Regulations
- UL-94 Flame Class
- ASTM/Mil-Spec
- D635 Self Extinguishing
- RoHS Compliant
- REACH Compliant
Marine-Grade PVC Foam Sheet for Demanding, Moisture-Rich Environments
Marine-grade PVC foam sheet, a type of expanded PVC, is a lightweight, closed-cell plastic material engineered for superior moisture resistance and durability. Specifically designed to perform in wet and humid conditions, this versatile sheet is ideal for a variety of marine and outdoor applications.
Manufactured with enhanced weatherability and UV protection, marine-grade PVC foam sheet maintains dimensional stability and resists warping, rotting, and corrosion. It is easy to cut, route, and thermoform, making it a popular choice for fabricators, designers, and OEMs seeking long-lasting performance without sacrificing aesthetics.
Available in a range of thicknesses and colors, this material is frequently used for boat interiors, dashboard panels, cabinetry, signage, and other structural and decorative applications in moisture-prone environments. Whether you are retrofitting a watercraft or designing high-end marine displays, marine-grade PVC foam sheet offers the durability and fabrication ease needed for demanding projects.


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Key Features of Marine-Grade PVC Foam Sheets
Our marine-grade PVC foam sheets offer several performance and fabrication advantages that make them a standout material across various industries.
Moisture Resistant: Closed-cell construction prevents water absorption, making it ideal for marine and high-humidity environments.
Lightweight Yet Rigid: Offers excellent strength-to-weight ratio, reducing overall load without compromising stability.
UV and Weather Resistant: Engineered to withstand prolonged sun exposure and outdoor conditions without degrading or fading.
Easy to Fabricate: Can be easily cut, routed, drilled, or thermoformed using standard tools and techniques.
Smooth Surface Finish: Features a uniform surface that readily accepts adhesives, paints, and vinyl graphics for a clean, professional appearance.
These features make marine-grade PVC foam sheet a practical and cost-effective solution for customers seeking reliable performance in wet or outdoor environments.
Benefits of PVC Foam Sheet For Marine Applications
Applications of Marine Grade PVC Foam Sheet
Marine-grade PVC foam is used across several industries for both structural and decorative purposes. Its unique blend of properties makes it ideal for environments where moisture, salt, and UV exposure are concerns.
In the marine industry, it's commonly used for upholstery backing, cabinetry, bulkheads, hatch covers, and wall liners. Its lightweight nature makes it easy to work with during boat construction or retrofitting.
In architectural and construction applications, the material is used for outdoor enclosures, bathroom partitions, and wall panels where resistance to humidity and corrosion is critical.
From boat manufacturers to builders, marine-grade PVC foam sheet continues to be a trusted material for moisture-resistant projects of all kinds.
Related Products
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Marine Grade ABS
Piedmont Plastics carries Marine Grade ABS, Aqua-Plas V. AP V is available in neutral colors to match most surfaces and is easily machined and fabricated.
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Marine Grade Polyolefin
Marine grade polyolefins offer superior flexibility and toughness to the marine market, and often last longer than teak and other common marine materials.
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Marine Grade Acrylic Sheet
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.
Available Marine Grade Foam Sheet Product Options
Aqua-Plas I Ultra: Specifically engineered for use in marine upholstery applications, renowned for its ability to hold staples and screws securely. This product distinguishes itself by offering superior impact strength, outperforming many other PVC foam sheets available on the market. Not only is it lightweight, but it is also environmentally friendly, making it a conscientious choice for your marine projects.
Aqua-Plas III Ultra LG: Designed specifically for fiberglass boat builders, our lamination-grade PVC foam sheet is an environmentally friendly option that does not sacrifice performance. This lightweight sheet boasts superior impact strength, excellent screw retention, and a modified finish that is optimized for lamination, allowing for strong adhesion to fiberglass surfaces without the need for prior surface preparation.
Endurabond: An exceptional alternative to wood coring materials, Endurabond boasts features that are tailored for high-performance applications. It adheres seamlessly to fiberglass without any prior surface preparation and is crafted to resist corrosion, delamination, rot, and splintering.
Frequently Asked Questions About Marine Grade Foam PVC
Have questions about marine-grade PVC foam? Below are some commonly asked questions to help guide your decision.
Marine grade formulations include enhanced UV protection and improved moisture resistance to withstand harsh marine environments.
Yes. Its closed-cell structure and chemical resistance make it suitable for use around saltwater.
Yes, it can be recycled depending on the local recycling facilities available in your area.
Yes, marine grade PVC foam can be used in structural applications thanks to its strength, excellent screw retention, and reliable adhesion. Unlike wood, it resists rotting, corrosion, delamination, and splintering, making it a durable alternative for marine and outdoor structural use.
Why Buy Marine Grade PVC Foam from Piedmont Plastics?
At Piedmont Plastics, we go beyond supplying material. We deliver complete solutions designed to meet your project needs. Here's what makes us your trusted source for marine-grade PVC foam sheet:
Extensive Inventory: We offer a wide selection of marine-grade PVC foam sheets in various thicknesses and sizes to suit both standard and custom applications.
Custom Fabrication Capabilities: Our advanced equipment allows us to provide precision cutting and fabrication services, delivering material tailored to your exact requirements.
Industry Knowledge: With decades of experience, our team is ready to help you identify the right marine-grade PVC solution for your specific environment and performance needs.
Nationwide Reach: With locations across North America, we ensure quick and convenient access to the materials you need, wherever your project is located.
Reliable Quality: Our marine-grade PVC foam products are selected for their consistency, durability, and proven performance in demanding marine and outdoor conditions.
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460 Schrock Road
614-985-0745
