TL;DR
A concrete collar is the mass of concrete poured around the base of a fence post in its hole, shaped with a sloped or domed top so rainwater sheds away from the wood or steel instead of pooling against it. Typical residential practice sets the collar 6 to 12 inches in diameter beyond the post and below frost depth where heaving is a concern.
What it means
A concrete collar is the mass of concrete poured around the base of a fence post in its hole, shaped with a sloped or domed top so rainwater sheds away from the wood or steel instead of pooling against it. Typical residential practice sets the collar 6 to 12 inches in diameter beyond the post and below frost depth where heaving is a concern. A flat or cupped top is the detail that rots wooden posts at grade, the most common fence failure point, so the crown is worth checking before the crew leaves.
Where it sits in the glossary
Concrete collar 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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