Static field route #346

What do I do when duct wrap too tight and compresses R-value?

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

Wrap that is pulled too tight compresses insulation and lowers performance. It should be snug and sealed, not crushed.

Open in Field Rescue Open category

Field checklist

Look for flattened insulation at corners, straps, and seams.
Check that facing is smooth without crushing the insulation thickness.
Rework areas where the wrap is cinched tight around supports.
Ask if a support shield/saddle is needed.

Ask foreman

This wrap looks compressed at [location]. Do you want it loosened/reworked before it gets covered?

Do not

Do not tighten wrap like a ratchet strap around the duct.

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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