TL;DR
Batt insulation is the pre-cut blanket of fiberglass, mineral wool, or cotton fiber sized to friction-fit between studs, joists, and rafters at standard framing spacings of 16 and 24 inches. Fiberglass delivers roughly R-3.1 to R-4.3 per inch and mineral wool slightly more with better fire resistance, with common products labeled R-13 to R-38 per the federal R-value rule.
What it means
Batt insulation is the pre-cut blanket of fiberglass, mineral wool, or cotton fiber sized to friction-fit between studs, joists, and rafters at standard framing spacings of 16 and 24 inches. Fiberglass delivers roughly R-3.1 to R-4.3 per inch and mineral wool slightly more with better fire resistance, with common products labeled R-13 to R-38 per the federal R-value rule. Performance depends on a fitted installation: compression, gaps, and stuffing around wires can cut effective R-value sharply, which is what insulation graders score as Grade I through III. It suits open framing during construction, while blown products win in closed cavities and irregular attics.
Where it sits in the glossary
Batt insulation 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.
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See also
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