Fire-Rated Doors

Fire-rated doors are not optional — they're required by code in stairwells, corridors, mechanical rooms, and other critical locations throughout commercial buildings. But a fire-rated door only provides protection when every component is properly labeled, matched, and installed to specification. Commercial door systems from Cosello Construction cover fire-rated assemblies as part of a complete approach to every building type.

Cosello Construction installs complete fire-rated door assemblies for commercial properties across New Jersey, Pennsylvania, and Delaware. We handle everything from product selection to final installation — delivering work that's inspection-ready and fully code-compliant from day one. For properties that need both fire-rated doors and other exterior openings, Cosello Construction's commercial windows and doors page covers the full range of commercial exterior solutions.

Fire-rated door assemblies are classified by UL 10B, UL 10C, and NFPA 252 standards, with ratings from 20 minutes to 3 hours. Per IBC Table 716.1(2), the required door rating is tied to the wall assembly's fire-resistance rating — a 1-hour wall needs a minimum 45-minute door, while 2-hour walls typically require 90-minute rated assemblies. These requirements apply across all commercial building types in New Jersey and Pennsylvania, including offices, healthcare facilities, schools, multi-family residential, and retail properties. All fire-rated doors must also meet NFPA 80 annual inspection requirements to remain code-compliant. Door repair and maintenance services from Cosello Construction help keep existing fire-rated assemblies in inspection-ready condition.