Static field route #18809

What do I do when grease duct wrap is too close to combustibles or installed wrong?

Grease Duct, Kitchen Exhaust & Industrial Exhaust🚨 STOP / VERIFYV188 answer-gap expansion

📖 Verified core answer

Stop if grease duct, wrap, framing, or clearance does not match the listed assembly. Verify the exact wrap system, layers, overlaps, bands, penetrations, and combustible clearance per manufacturer/ESR/project/AHJ direction.

Open in Field Rescue Open category

Field verification checklist

Identify the wrap product and approved project detail/submittal.
Check number of layers, overlap direction, banding/fastening, seams, corners, access doors, and penetrations.
Look for compressed wrap, gaps, tears, oil/dust on the duct, or missing treatment at supports.
Confirm combustible clearance/zero-clearance claim only against the listed assembly and AHJ/project approval.
Photograph the run before it is hidden by walls or ceiling.

Ask foreman

The grease duct wrap at [location] is close to combustible framing and I need to verify the listed assembly. I checked the product/detail and see [gap/overlap/layer/access issue]. Do you want this held for inspection or corrected before cover?

Text to foreman

Route options

AMake the small 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 invent a zero-clearance assembly, skip layers/overlaps, or cover grease duct wrap that does not match the approved listing.

Why this matters

Grease duct wrap mistakes are fire-risk, inspection, and liability problems. Once covered, the correction can require demolition and reinspection.

Verification basis

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