To create a fully effective life safety strategy, NFPA 105 (Smoke Door Assemblies) should be integrated with firestopping systems (NFPA 80) and smoke control systems (NFPA 92). Below is a breakdown of how NFPA 105 works in conjunction with firestopping and smoke management to enhance fire and life safety.

NFPA 105 & Firestop Systems (NFPA 80)

Firestop systems are designed to seal penetrations and joints in fire-rated barriers, preventing the spread of flames, smoke and toxic gases.

Key Integration Points:

  • Smoke Doors & Fire Barriers:

    • Smoke doors must be installed within properly sealed fire-rated walls to prevent smoke from bypassing the assembly through unprotected penetrations.

    • Firestopping materials (e.g., intumescent caulk, firestop pillows, sealants) must be used to seal gaps around doors and penetrations that could compromise smoke control.

    • All penetrations for wiring, conduit and mechanical systems around smoke doors must be properly sealed with UL-listed firestop materials.

  • Door Frames & Firestop Sealing:

    • Firestop sealants should be applied to the joints between door frames and fire-rated walls to prevent hidden pathways for smoke migration.

    • Smoke door gaskets should be checked regularly to ensure that no air leakage occurs through improperly sealed frames.

  • Periodic Inspections:

    • NFPA 80 requires annual inspections of fire doors and frames, ensuring all penetrations, seals and firestopping components remain intact.

    • Any gaps, breaches or missing seals must be repaired immediately with approved firestopping materials.

NFPA 105 & Smoke Control Systems (NFPA 92)

Smoke control systems, regulated by NFPA 92, manage the movement of smoke during a fire, preventing it from filling occupied areas or blocking escape routes.

Key Integration Points:

  • Smoke Doors & Pressurized Stairwells:

    • Smoke doors must work in tandem with stairwell pressurization systems to prevent smoke from entering exit stairwells.

    • Fire-rated smoke doors should be installed at every stairwell access point to contain smoke within affected areas.

  • HVAC & Smoke Dampers:

    • Combination fire/smoke dampers (per NFPA 80 & 105) should be installed in HVAC ductwork passing through smoke barriers to prevent the spread of smoke.

    • Smoke doors should be tested alongside HVAC smoke control systems to ensure proper coordination during fire events.

  • Automatic Activation & Testing:

    • Smoke doors should be linked to the building’s fire alarm system so they automatically close when smoke is detected.

    • Annual testing should confirm that smoke doors and smoke dampers activate properly upon alarm signals.

Best Practices for NFPA 105, Firestopping, & Smoke Control Compliance

To ensure optimal safety and compliance, follow these best practices:

Use UL-Listed Firestop Materials:

  • All penetrations around smoke doors, fire-rated walls and ductwork must be sealed with UL-listed firestop sealants, collars or pillows.

Coordinate Firestop & Smoke Control Inspections:

  • Schedule simultaneous inspections for smoke doors, firestopping and dampers to verify system integrity.

  • Ensure all door seals, firestop materials and smoke dampers meet required UL leakage ratings.

Regular Testing & Maintenance:

  • Conduct annual inspections for NFPA 105 smoke doors and NFPA 80 fire doors.

  • Perform functional testing of smoke control systems (per NFPA 92) alongside fire door drop tests.

Document All Inspections & Repairs:

  • Maintain detailed inspection reports for firestop penetrations, smoke doors and dampers.

  • Keep records of repairs, replacements and testing dates to ensure compliance.

By integrating NFPA 105 (Smoke Doors), NFPA 80 (Firestopping), and NFPA 92 (Smoke Control Systems), facilities can create a comprehensive fire and smoke protection strategy. Regular inspections, functional testing and proper firestopping techniques will ensure a safer environment for occupants, first responders and property.