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If you’re looking for a high-performance alternative to marine plywood, Coosa Board is a standout choice. Available directly from Tricel Composites, it’s trusted across marine, transport, and industrial sectors for its strength, durability, and resistance to water and rot.
In this post, we answer the most common questions about Coosa Board to help you decide if it’s right for your next project.
Yes, Coosa Board is available in Ireland and can be purchased directly from Tricel Composites. We stock a range of thicknesses and densities to suit various applications, from boat building to structural reinforcement.
Coosa Board is widely considered better than plywood for transoms and other marine applications. It’s made from fibreglass-reinforced polyurethane foam, offering superior strength, water resistance, and longevity. Unlike plywood, it won’t rot, swell, or delaminate—making it ideal for harsh environments.
No. Coosa Board is typically 30–40% lighter than marine plywood, depending on the grade. This weight saving is especially beneficial in marine and transport applications, where reducing load can improve performance and fuel efficiency.
While Coosa Board is structurally sound on its own, fibreglassing over it is recommended for added strength and surface protection—especially in high-stress or load-bearing areas. Laminating also prepares the surface for painting or gelcoating.
Yes. Coosa Board is completely waterproof. Its closed-cell foam core prevents water absorption, making it ideal for wet environments. It won’t rot or degrade, even with prolonged exposure to moisture.
No. Coosa Board is highly resistant to warping, even under temperature fluctuations and moisture exposure. Its composite structure ensures long-term dimensional stability, making it a reliable choice for structural and marine use.
Not for water protection. Coosa Board does not need sealing to prevent water damage, but sealing or laminating is advised to protect the surface, improve aesthetics, and prepare it for paint or gelcoat.
Yes, Coosa Board can be painted. For best results, the surface should be sanded and primed with marine-grade products. This ensures proper adhesion and a long-lasting finish, especially in outdoor or marine environments.
Explore our full range of Coosa Board options or contact our technical team for advice on selecting the right grade and thickness for your project.
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