TL;DR
Wall cap adhesive is the exterior-grade construction adhesive, typically polyurethane or hybrid polymer, used to bond capstones onto the top course of segmental retaining walls, seat walls, columns, and outdoor kitchen islands. It replaces mortar in dry-stacked block systems, staying slightly elastic through freeze-thaw cycles while resisting the prying of weather and seated guests.
What it means
Wall cap adhesive is the exterior-grade construction adhesive, typically polyurethane or hybrid polymer, used to bond capstones onto the top course of segmental retaining walls, seat walls, columns, and outdoor kitchen islands. It replaces mortar in dry-stacked block systems, staying slightly elastic through freeze-thaw cycles while resisting the prying of weather and seated guests. Crews apply continuous beads to clean, dry block on a day above the product's minimum temperature, since caps popped loose on patio walls are overwhelmingly a story of dusty surfaces or cold-weather application.
Where it sits in the glossary
Wall cap adhesive 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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