The Type segmentation of the Door and Window Foam market distinguishes the primary polymer chemistries used in manufacturing. Polyurethane foam dominates due to its superior flexibility, thermal insulation, and ease of application, accounting for roughly 60% of market volume. Polystyrene foam, valued for its rigidity and high compressive strength, contributes about 25%, primarily in high‑performance glazing systems. Phenolic foam, offering enhanced fire‑resistance and low smoke emission, occupies near 10% of the market, driven by stringent building codes in commercial projects. Emerging bio‑based foams, derived from renewable feedstocks, represent the remaining 5% and are gaining traction as sustainability mandates intensify. Each type influences overall market size by aligning material properties with cost structures, regulatory requirements, and end‑user preferences, thereby shaping procurement strategies across construction sectors.