Balsa core: Natural core material for lightweight, durable composites

Balsa core, made from the honeycomb-like structure of balsa wood, is a natural, eco-friendly solution for high-strength, lightweight composite applications. Sourced from renewable plantations in Ecuador, Cobalsa, a Star-owned brand, delivers premium-grade balsa wood products trusted worldwide for over 50 years.

Why choose Balsa core from Star?

Unmatched Compressive Strength

End Grain Balsa offers compressive strength higher than most other core materials of similar density.

Exceptional Mechanical Properties

Outstanding strength-to-weight and stiffness-to-weight ratios. Good thermal and sound insulation capabilities.

Eco-friendly

Fast-growing renewable resource with minimal environmental impact.

Proven Expertise

Over 50 years of experience in balsa production, backed by GL certifications.

Cobalsa EG150

A premium-end grain balsa wood core, engineered for high-performance composite applications.

/
01
/

Key Specs

Dimensions: 24″ (610 mm) x 48″ (1220 mm) sheets.
Density: we can offer density 100 kg/m³, 150 kg/m³ and high density offering a balance of lightweight design and structural integrity.
Compressive strength: Exceptional performance for demanding applications.
Rigid and contourable: Adaptable to complex shapes and designs.
Resin compatibility: Works seamlessly with nearly all resin systems

01
/
02
/

What is Balsa wood?

Balsa wood, scientifically known as Ochroma pyramidale, is a lightweight and soft wood that is unique due to its exceptional strength-to-weight ratio. It is composed of large, thin-walled cells, resulting in a structure that is approximately 40% solid and 60% air. This unique cellular composition makes balsa one of the lightest woods available, weighing between 8 to 12 pounds per cubic foot, while still being strong enough for various applications, including wind turbines and boats.

02
/
03
/

Advanced production for superior quality

Our lean, automated production processes leverage state-of-the-art quality management systems, ensuring top-tier balsa wood products for diverse applications. Our balsa is expertly processed for use in vacuum infusion, hand lamination, spray lay-up, prepreg processing (up to 180°C), resin transfer molding (RTM), and adhesive bonding. The result is a reliable, high-performance material tailored to meet the stringent demands of various industries.

03
/
04
/

Consistent, sustainable, scalable supply you can trust

At Star Composites, we maintain a continuous global supply of sustainably sourced balsa wood, ensuring consistent availability for industrial customers worldwide. Our balsa wood is responsibly sourced, with complete traceability to mitigate the risk of using timber of questionable origin. Committed to zero deforestation and supporting a circular bio-based economy, we emphasize environmental stewardship in all aspects of our production.

04