Static field route #337

What do I do when wrong duct wrap around fire-rated assembly?

Insulation, Liner, Vapor Barrier & Condensation.1 field-polished — insulation/rated-detail check

Rated assemblies require the approved/listed wrap or protection detail. Normal duct wrap is not a substitute for a rated system.

Open in Field Rescue Open category

Field checklist

Stop and identify whether this is a rated wall, shaft, grease, smoke, or fire-resistance condition.
Find the approved detail/submittal before wrapping.
Verify seams, overlaps, bands, access, and labels match the listed method.
Get foreman/AHJ direction before changing material.

Ask foreman

This looks like rated duct wrap or a rated assembly. Can you verify the approved detail before we install or cover it?

Do not

Do not substitute standard duct wrap for rated assembly material.

Why it matters

Insulation affects access, vapor barrier, condensation control, inspections, TAB/service access, and finished-work quality. Project specs and manufacturer details still control.

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