The market taxonomy for sandwich materials also differentiates by type, encompassing core structures, face‑sheet composites, and bonding technologies. Core options include polymeric foams (PVC, PET), aluminum or Nomex honeycomb, and natural balsa wood, each presenting a distinct trade‑off between density, shear modulus, and manufacturability. Foam cores dominate the volume segment because of their low cost and ease of integration with automated lay‑up processes, contributing the largest share of the market’s quantitative growth. Honeycomb cores, although higher‑priced, deliver superior out‑of‑plane stiffness and are favoured in high‑load offshore blades where weight penalties are offset by performance gains. Face‑sheet materials range from glass‑fiber reinforced polymer (GFRP) to carbon‑fiber reinforced polymer (CFRP) and hybrid laminates; GFRP remains the baseline for cost‑sensitive projects, while CFRP adoption is expanding in premium offshore projects due to its higher specific strength. Bonding methods—structural adhesives versus mechanical fasteners—further refine the type classification, with adhesive bonding providing uniform load transfer and reduced peel‑back risk, thereby influencing the overall market size through differentiated pricing and reliability profiles.