TL;DR
Top plate sealing is the air-sealing of the joint where interior wall framing meets the attic, caulking or foaming the gap between drywall and the top plates plus every wire and pipe hole drilled through them. These hairline paths add up to one of the largest hidden leakage areas in a house, pumping conditioned air into the attic by stack effect all winter.
What it means
Top plate sealing is the air-sealing of the joint where interior wall framing meets the attic, caulking or foaming the gap between drywall and the top plates plus every wire and pipe hole drilled through them. These hairline paths add up to one of the largest hidden leakage areas in a house, pumping conditioned air into the attic by stack effect all winter. Weatherization crews do it from the attic before blowing insulation, because buried plates can never be sealed economically afterward.
Where it sits in the glossary
Top plate sealing 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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