Within the types segment, the market distinguishes four core board constructions: rigid polymer‑based boards, semi‑rigid composite boards, flexible elastomeric boards, and high‑performance aerogel‑enhanced boards. Rigid polymer boards, typically fabricated from phenolic or polyimide resins, hold the largest share due to their proven mechanical strength and dimensional stability, supporting heavy‑load installations in tanks and pipelines. Semi‑rigid composites, combining polymer matrices with reinforcing fibers, capture a growing niche (approximately 30 % of type‑related revenue) by offering a balance between stiffness and ease of installation in complex geometries. Flexible elastomeric boards, valued for their conformability, serve niche applications such as pipe flanges and equipment housings, representing roughly 20 % of the type market. Aerogel‑enhanced boards, though premium‑priced, are gaining traction for ultra‑low thermal conductivity requirements, presently accounting for about 15 % of type sales. The remaining 15 % comprises hybrid and specialty boards tailored for extreme environments. This taxonomy clarifies how each board type contributes to the broader market size and informs product‑development strategies.