| Description | Engineered bamboo made by laminating strips into straight or curved structural profiles for flooring, decking, wall and ceiling panels and furniture. | Engineered wood products manufactured by laminating sawn timber or veneers into structural elements such as beams, panels and framing components. | Cement-based composite material used primarily in compression-based structural systems such as slabs, columns, and foundations. | Hot-rolled structural steel used for beams, columns, and primary structural framing. | Extruded aluminum products commonly used in facade systems, window framing, and enclosure components. |
| Embodied Carbon GWP fossil (A1–A3) (kgCO₂e/m³) | 598 kg CO₂e/m³ [1] | Softwood GLT/CLT: 242 kg CO₂e/m³
Hardwood GLT/CLT: 690 kg CO₂e/m³ [2] | 249–354 kg CO₂e/m³ [2] | 17,820 kg CO₂e/m³ [2] | 46,980–49,140 kg CO₂e/m³ [2] |
| GWP Bio (Biogenic Carbon Storage) (kgCO₂e/m³) | -1,330 kg CO₂e/m³ [1] | Softwood GLT/CLT: -823 kg CO₂e/m³
Hardwood GLT/CLT: -1,090 kg CO₂e/m³ [2] | No biogenic component. | No biogenic component. | No biogenic component. |
| Rotation Cycle & Dynamic Carbon Benefit | When bamboo is harvested, new culms regrow and reabsorb CO₂ within 3–5 years. Dynamic LCA accounts for the timing of emissions and removals, showing that rapid regrowth shortens the time CO₂ remains in the atmosphere and leads to earlier climate benefits. [3] | Softwood GLT/CLT has a rotation cycle of ~25–50 years; hardwood 60–120 years. Slower regrowth delays CO₂ removal, resulting in a longer period of atmospheric warming before carbon is reabsorbed. Dynamic LCA captures these temporal effects, highlighting delayed climate benefits compared to fast-growing materials. [3] | – | – | – |
| Biodiversity & Ecosystem Impact | When responsibly managed, bamboo can support biodiversity through rapid regeneration, permanent root systems and low land disturbance. Outcomes depend on plantation management and avoidance of monoculture. | Biodiversity outcomes depend on forest management. Certified forestry can support ecosystem health, while poor practices may lead to habitat loss and degradation. | Relies on extractive raw materials, contributing to landscape disruption, habitat loss and resource depletion during extraction and production. | Mining of iron ore and coal causes land disturbance and ecosystem impacts. High recycled content significantly reduces reliance on virgin extraction. | Primary aluminium has significant biodiversity impacts due to bauxite mining. Recycled aluminium substantially reduces these impacts by avoiding new extraction. |
| Strength & Performance | High strength-to-weight material with performance comparable to structural hardwoods. Suitable for beams, columns and panels when engineered and detailed to structural requirements. | Predictable structural performance with good strength-to-weight efficiency. Widely used for beams, panels and framing in low- to mid-rise construction. | High compressive strength and durability, with low tensile capacity. Performs well in mass structures requiring stiffness and fire resistance. | High compressive strength and durability, with low tensile capacity. Performs well in mass structures requiring stiffness and fire resistance. | Very high strength and ductility, enabling long spans and slender structural elements. Performance dependent on corrosion protection and fire design. |
| Fire Rating | Chars under fire exposure similarly to timber, providing predictable fire behaviour when engineered and detailed to fire performance requirements. | Chars at a known rate, allowing fire performance to be addressed through section sizing and sacrificial layers. | Non-combustible material with inherent fire resistance and minimal contribution to fire load. | Non-combustible, but strength reduces rapidly at elevated temperatures and typically requires fire protection systems. | Non-combustible but loses strength at relatively low temperatures and may require fire protection in fire-rated assemblies. |
| Circularity & End of Life | Engineered bamboo products can be reused, repurposed or down-cycled when designed for disassembly. At end of life, material may be cascaded into lower-grade applications or recovered for energy. Reuse and long-life applications maximize biogenic carbon storage benefits. | Wood products can be reused, repurposed or down-cycled, with limited closed-loop recycling. At end of life, material is commonly cascaded into secondary uses or recovered for energy. Reuse and long-life applications maximize biogenic carbon storage benefits. | Concrete has limited reuse potential and is typically down-cycled into aggregate at end of life. While recycling reduces landfill, crushed concrete does not recover the original structural function of the material. | Steel is highly recyclable through well-established global infrastructure and can be recycled multiple times with minimal loss of material properties. Reuse of structural steel elements is possible where designed for disassembly. | Aluminium is highly recyclable, with recycling requiring significantly less energy than primary production. High recovery rates enable strong circularity when products are designed for disassembly and material recovery. |