Static field route #19080

What do I do when multi-section fire/smoke dampers are spliced with the wrong screws?

Fire/Smoke Dampers, Access Doors & Rated Assemblies🟥 STOP / VERIFYV190 answer-gap expansion

📖 Verified core answer

No — multi-section damper assemblies must be joined exactly per the manufacturer/listed installation. Remove wrong fasteners and use the approved splice/hardware detail.

Open in Field Rescue Open category

Field verification checklist

Confirm damper model, size, number of sections, sleeve, wall rating, and installation sheet.
Identify any wrong fasteners or missing factory splice components.
Check blade operation after the sections are joined.
Verify retaining angles, sleeve position, actuator access, and firestop sequence.
Photo correction for inspector/closeout.

Ask foreman

The multi-section FSD at [location] was spliced with the wrong fasteners. I checked the installation sheet and factory parts. Do you want it pulled apart and reassembled with the approved splice hardware before inspection?

Text to foreman

Route options

AMake the field correction only if it is within your assignment and the approved method.

BHold and document the condition if the fix affects airflow, access, life safety, pressure class, rated assemblies, equipment, or another trade.

CBring the foreman/detailer the location, what you checked, and what decision you need before cover, startup, or rework.

Do not do this

Do not use drywall screws or random hardware to splice listed fire/smoke damper sections.

Why this matters

Wrong damper splice hardware can void the listed assembly, jam blades, and fail life-safety inspection.

Verification basis

Approved drawings/specs, project coordination drawings, manufacturer instructions/submittals, shop standards, foreman/detailer direction, employer policy, and AHJ/code requirements.