A NEW CLASS OF MATERIALThe Future of LumberHigh-performance material made from macroalgae and recycled inputs, built to outperform wood in durability, consistency, and sustainability.Built to Outperform WoodEngineered from NatureSeaLumber™ enables builders, manufacturers, and developers to transition to next-generation materials without compromising cost or performance.
What is SeaLumber™
SeaLumber™ is an advanced composite engineered to replace traditional wood across construction, infrastructure, and outdoor applications.
Manufactured from macroalgae, agricultural fibers, and recycled polymers, it delivers structural performance, durability, and consistency without the limitations of natural timber.
Designed for scalability and real-world use, SeaLumber™ enables builders, manufacturers, and developers to transition to next-generation materials without compromising cost or performance.
Water & Rot Resistant
Performs in humid, coastal, and outdoor environments
Pest Resistant
Unaffected by termites and biological degradation
Low Maintenance
No sealing, painting, or replacement cycles
Long Lifespan
Designed for extended use in demanding conditions
Sustainable by Design
Made using abundant biomass and recycled materials to reduce environmental impact.
Superior Durability
Engineered for long-term performance in demanding residential, commercial, and industrial environments.
Cost Efficiency
Designed for competitive pricing with reduced lifetime ownership costs through lower maintenance and replacement needs.
Carbon Storing Material
Helps reduce embodied carbon by utilizing biomass that naturally captures CO₂ during growth, locking that carbon into durable long-life products.
Engineered for Durability and Sustainability
Raw Material Sourcing
Material Processing
Advanced Manufacturing
Final Product
SeaLumber™ begins with the collection and preparation of macroalgae (sargassum seaweed) or other agricultural residues depending on the region, which are then refined and blended with recycled polymers to create a high-performance composite. This material is manufactured into durable profiles and panels, resulting in a final product ready for use across construction, infrastructure, and industrial applications.
SeaLumber™ is built from some of the world’s most abundant and widely available resources, including macroalgae, recycled plastics, and agricultural residues. By adapting our material inputs to what is locally available in each region, we create a flexible, scalable solution that transforms regional waste streams into high-performance construction materials.
Sargassum Blooms
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Massive sargassum blooms accumulate across the Atlantic each year, impacting coastlines and ecosystems. This abundant biomass represents a scalable, renewable input for next-generation materials.
Ocean Plastic
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Plastic waste continues to build up in oceans worldwide, creating long-term environmental challenges. Recovered and recycled plastics can be transformed into durable, high-performance materials.
Agricultural Waste
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Agricultural byproducts are generated at massive scale across global farming systems. These underutilized fibers offer a consistent and widely available resource for material production.
Plastic Pollution
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Plastic production continues to grow globally, creating both supply and waste management challenges. Leveraging recycled polymers enables scalable manufacturing while reducing reliance on virgin materials.
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Real World Applications
01. Fencing Systems
Durable, low-maintenance solutions for residential and commercial use
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02. Pallets & Logistics
Strong, consistent materials for supply chain applications
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03. Outdoor Structures
Decking, furniture, trails, cladding, and exposed structures
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04. Panels & Construction
Versatile materials for building systems and prefabrication
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Why switch to SeaLumber™
SeaLumber™ outperforms traditional and alternative materials by combining the strength and natural aesthetics of wood with the durability and low-maintenance benefits of modern composites while delivering superior sustainability through abundant, recycled, and renewable inputs. Engineered for consistency, long lifespan, and real-world performance, SeaLumber™ provides a balanced solution that eliminates the common tradeoffs between durability, appearance, cost efficiency, and environmental responsibility.
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Global Recognition & Industry Support
Watch Video
As sargassum continues to accumulate across coastlines, it presents both a challenge and a unique material opportunity. SeaLumber™ converts this abundant resource into durable, high-performance building materials designed for real-world applications.