Static field route #332

What do I do when insulation installed before joint inspection?

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

Do not cover joints before they are inspected, sealed, tested, or approved. Insulation can hide problems that become expensive later.

Open in Field Rescue Open category

Field checklist

Check whether sealing, pressure testing, or inspection is complete.
Look at backside joints, corners, collars, taps, and seams.
Photograph hard-to-see areas before cover if directed.
Hold insulation until the foreman says the duct is ready.

Ask foreman

Before I insulate this run, has sealing/testing/inspection been cleared for these joints?

Do not

Do not use insulation to hide an unverified joint.

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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