Application drives the bulk of the Aluminium Windows and Doors market, accounting for distinct demand pools that shape overall volume. Residential use represents the largest share, typically 55 % of total sales, because new‑home construction and renovation projects prioritize energy‑efficient framing. Commercial applications—office towers, retail complexes, and hospitality venues—contribute roughly 30 % of the market, reflecting higher performance specifications and larger unit sizes. Industrial settings, such as factories and warehouses, add about 10 % as manufacturers seek durability and low‑maintenance solutions for large‑scale openings. Institutional buyers, including schools, hospitals, and government facilities, occupy the remaining 5 % and often demand compliance with strict safety and accessibility standards. Collectively, these application segments define the Aluminium Windows and Doors segmentation landscape, with each category’s proportion directly influencing production planning, pricing dynamics, and supply‑chain allocation.