fire barriers, curtains, and air sealing. Its commercial decorating division delivers painting, decorating, specialist coatings, mastic works, and waterproof liquid roofing systems for offices, mixed-use schemes, heritage buildings, healthcare, education, leisure, and other sectors. Sentinel Contracting also offers turnkey laser cleaning for structural steel, covering site preparation, precision laser cleaning, and priming or intumescent spraying to meet fire safety specifications. These services are used by main contractors, developers, architects, and building owners seeking coordinated finishing, fire protection compliance, and surface preparation on large-scale commercial schemes.