The Polymer Modified Bituminous Waterproofing Sheet Membrane segmentation by application can be broken down into five principal categories: residential roofing, commercial roofing, infrastructure (including bridges and tunnels), industrial flooring, and civil‑engineering foundations. Residential roofing accounts for roughly 25 % of total demand, driven by the need for durable, low‑maintenance membranes in single‑family housing retrofits. Commercial roofing, representing about 30 % of the market, benefits from larger surface areas and stricter fire‑rating requirements, prompting higher adoption of SBS‑modified sheets. Infrastructure projects, which include bridge decks and tunnel linings, contribute another 20 % as public‑sector investment emphasizes long‑term durability and resistance to aggressive chemicals. Industrial flooring consumes 15 % of volume, where membranes are selected for chemical resistance and load‑bearing capacity. Finally, civil‑engineering foundations, such as basements and underground parking structures, hold the remaining 10 % share, reflecting niche but critical usage where water ingress control is paramount. Collectively, these application segments shape the overall market size by aligning product specifications with end‑use performance criteria.