Why We Need More Biomaterials

Key Takeaways

• Biomaterials replace extractive plastics with plant‑derived, biodegradable alternatives
• Australian projects showcase straw panels, hempcrete, and mycelium applications
• Local sourcing cuts transport emissions but faces labeling complexity
• Funding gaps hinder scaling of biomaterial manufacturers

Pulse Analysis

Biomaterials are reshaping the construction sector by offering plant‑based, biodegradable substitutes for traditional plastics and mined resources. Their cradle‑to‑grave profile delivers low or zero embodied carbon, as demonstrated by the post‑Olympic reuse of straw panels that were shredded and turned into compost across Sydney. This shift not only curtails landfill waste but also eliminates toxic off‑gassing associated with recycled plastics, positioning biomaterials as a cornerstone of circular building practices.

In Australia, a growing ecosystem of local growers and manufacturers is delivering timber, hemp, and innovative biobased epoxy. Hemp can be processed into hurd for hempcrete, while South Australian firms produce epoxy resins free of hazardous chemicals. However, the market faces hurdles: eco‑labels such as Australian Made focus on manufacturing location rather than ingredient provenance, and supply‑chain transparency remains limited. Specifiers often rely on superficial certifications, creating a knowledge gap that stalls broader adoption.

Bridging the funding gap is critical for scaling biomaterial production. Government mandates like Local Jobs First can prioritize domestic sourcing, yet broader investment—both public and private—is needed to support start‑ups and expand capacity. Industry alliances, particularly within the hemp sector, are already fostering collaboration and state‑level referrals. With targeted capital and clearer labeling standards, biomaterials could achieve mass‑market competitiveness, driving down construction emissions and reinforcing Australia’s commitment to a low‑carbon future.