Premium Closed Cell PVC Foam Core 75kg/m³ - High Mechanical Performance for Composite Applications

This premium closed cell PVC foam core is a high-performance structural material designed for demanding composite applications. With a nominal density of 75kg/m³, it delivers an excellent balance of stiffness, strength and low weight, making it ideal for use in sandwich constructions and laminated panels.

Available in a range of practical sheet sizes and thicknesses, this foam core is widely used in marine, transportation, industrial, and sporting goods sectors. Its closed cell structure offers good resistance to water ingress, consistent mechanical properties, and reliable performance when bonded with fibreglass, carbon fibre, or other reinforcement fabrics.

Product Features

• Closed cell PVC foam core with a nominal density of 75kg/m³ for high mechanical performance.
• Multiple thickness options: 3mm, 5mm, 10mm and 25mm to suit different stiffness and weight requirements.
• Two sheet lengths available: 540mm and 1080mm for flexible panel layouts and reduced waste.
• Two sheet widths available: 505mm and 1020mm to accommodate small inserts through to larger laminates.
• Lightweight structure reduces overall component weight without compromising rigidity.
• Good compatibility with common composite resins such as polyester, vinyl ester and epoxy.
• Closed cell construction helps minimise water absorption and improves long-term durability.

Key Features and Benefits

• Combines high specific stiffness and strength with low density, enabling lighter, more efficient composite structures.
• Closed cell design reduces the risk of moisture ingress, helping to maintain mechanical performance over time.
• Wide choice of thicknesses allows designers and fabricators to fine-tune panel properties for different load cases.
• Easy to cut, shape and machine using standard workshop tools, supporting efficient fabrication and prototyping.
• Compatible with a range of laminate systems, providing versatility across marine, transport and industrial applications.
• Consistent, uniform core structure helps achieve reliable bonding and predictable performance in sandwich panels.

Specifications

Applications and Ideal Uses

This PVC foam core is suitable for a wide range of composite constructions where low weight, good mechanical performance and durability are required.

• Marine decks, hulls, bulkheads and superstructures in sandwich construction.
• Lightweight panels and partitions for commercial vehicles, caravans and motorhomes.
• Industrial composite panels, machine guards and structural covers.
• Wind turbine components, sporting goods and performance equipment.
• General composite repairs, reinforcements and custom laminated panels.

Frequently Asked Questions

Can this PVC foam core be used with epoxy, polyester and vinyl ester resins?

Yes, this closed cell PVC foam core is compatible with commonly used composite resins including epoxy, polyester and vinyl ester. Always follow your resin supplier’s guidance on surface preparation and curing to ensure optimal bond strength.

Is the foam core easy to cut and shape for custom panel sizes?

The foam core can be cut and shaped using standard workshop tools such as hand saws, fine-tooth blades, routers and sharp knives. It is straightforward to machine to size, create chamfers or form recesses, making it suitable for both prototyping and production work.

Does the closed cell structure prevent water absorption in marine environments?

The closed cell structure significantly reduces water absorption compared with open cell materials, helping to limit moisture ingress. However, good laminating practice and fully sealed skins are still essential in marine and high-moisture environments to maximise long-term performance.