TL;DR
Duct wrap is blanket fiberglass insulation with a foil or vinyl vapor-barrier facing, wrapped around the outside of ductwork running through unconditioned attics, crawl spaces, and garages. Common products deliver R-6 or R-8, the values energy codes require for ducts outside the thermal envelope.
What it means
Duct wrap is blanket fiberglass insulation with a foil or vinyl vapor-barrier facing, wrapped around the outside of ductwork running through unconditioned attics, crawl spaces, and garages. Common products deliver R-6 or R-8, the values energy codes require for ducts outside the thermal envelope. Seams must be stapled and taped foil-to-foil; gaps in the facing let humid air reach cold metal and condense, soaking the insulation it was meant to protect.
Where it sits in the glossary
Duct wrap is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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