TL;DR
Concrete sealer is a liquid treatment, either a penetrating silane/siloxane that chemically blocks pores or an acrylic, epoxy, or urethane that forms a surface film, applied to slabs to reduce absorption of water, road salt, and stains. In freeze-thaw climates a penetrating product on driveways and walks measurably cuts surface scaling caused by deicers.
What it means
Concrete sealer is a liquid treatment, either a penetrating silane/siloxane that chemically blocks pores or an acrylic, epoxy, or urethane that forms a surface film, applied to slabs to reduce absorption of water, road salt, and stains. In freeze-thaw climates a penetrating product on driveways and walks measurably cuts surface scaling caused by deicers. Film types add sheen and color enhancement but can become slippery and need recoating every few years; penetrating types are invisible and typically last five to ten.
Where it sits in the glossary
Concrete sealer 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
License: CC-BY-4.0 — quote freely with attribution to ProFix Editorial Team / ProFix Directory.