Bio•Logic: A Foam-Free Surfboard Built From Natural Materials

Grain Surfboards, based in Maine (US), has introduced Bio•Logic—a new construction method that removes foam, fibreglass and almost all resin from surfboard production. The company builds on more than 20 years of experience in wooden surfboards. With Bio•Logic, it takes a step towards low-impact material systems in performance products.

Rethinking Surfboard Materials

Conventional surfboards rely on petroleum-based materials such as polyurethane foam, fibreglass and synthetic resins. Bio•Logic replaces these with natural and renewable alternatives. These include Northern White Cedar, FSC-certified plywood, natural cork and flax fibre.

Instead of applying fibreglass on the outside, Grain integrates flax fabric inside the structure using vacuum bagging. This reduces harmful materials and improves performance. The boards are lighter, more flexible and more responsive in use.

Transparency And Material Honesty

Grain also focuses on transparency. The company describes the boards as using “virtually zero resin.” It still uses a small amount where needed, such as for fin boxes and leash attachments. This reduces resin use by more than 99% compared to standard surfboards.

This honest approach reflects a wider shift in sustainable design. Instead of absolute claims, designers now focus on measurable improvements and clear communication.

Biobased Finishing And Circular Potential

The boards feature a plant-based hard-wax oil finish instead of synthetic coatings. This creates a durable surface that users can repair over time. It also highlights the natural appearance of the wood.

The material strategy supports circular design. It extends product lifespan and reduces environmental impact. Local sourcing of timber and natural fibres further strengthens the sustainability profile.

From Niche Innovation To Broader Application

Bio•Logic has already received industry recognition. It won the Trailblazer Award for Innovation at the Maine Outdoor Economy Summit. The project also received support from the Maine Technology Institute.

Although designed for surfboards, the system offers wider potential. Designers could apply similar principles in furniture, sports equipment and mobility products.

Towards Cleaner Performance Products

Grain is launching Bio•Logic through a limited “Founders’ Batch.” The release allows users to test and help refine the design. The boards combine traditional craftsmanship with digital precision and vacuum forming techniques.

Bio•Logic shows how designers can rethink high-performance products. It proves that renewable materials can meet technical demands while reducing environmental impact.

Source: Grain Surfboards
Photos: Allie Wormel / Christopher Gauthier / Nick LaVecchia