The Inorganic Fire Barrier segmentation by application delineates five primary end‑use domains that collectively drive market volume. Building construction accounts for roughly 45 % of total demand, reflecting the sector’s extensive reliance on fire‑resistant wall and floor assemblies to satisfy stringent codes in residential, commercial, and institutional projects. Oil & Gas contributes about 20 %, where inorganic barriers are deployed in pipeline insulation, refinery structures, and offshore platforms to mitigate fire propagation risks inherent to hydrocarbon processing. Transportation—including rail, automotive, and aerospace vehicles—captures 15 % as manufacturers integrate lightweight fire‑blocking panels to meet safety standards without compromising performance. Power generation represents 12 % of the market, primarily for turbine housings, boiler rooms, and nuclear plant containment where high‑temperature resilience is critical. The residual Other segment (8 %) aggregates niche uses such as marine vessels, mining equipment, and specialty industrial machinery, each requiring tailored barrier solutions. Together, these application categories map the demand landscape and underpin the overall size of the inorganic fire barrier market.