Seawall Cap Repair & Replacement in Palm Beach County

The cap is the concrete beam along the top of the wall. It ties the panels together and usually anchors the tiebacks, so a failing cap is often the first sign of trouble underneath.

Why caps fail

• Saltwater reaches the rebar, it rusts and expands, and the concrete spalls off
• The wall below rotates or settles and cracks the cap
• Impact from boats, or heavy loads like equipment and pavers set too close to the edge

Patch vs. replace

Small spalls can sometimes be cleaned, treated and patched. Long continuous cracks, exposed rusted rebar or a cap that's moved generally mean replacement: the old cap is cut off and a new reinforced cap is formed and poured, often together with new tiebacks. HomeGuide groups new caps and tiebacks with seawall repairs at about $100–$250 per linear foot (HomeGuide, "Seawall Cost" (accessed Oct 2026)). Cap work usually still needs a permit.

Related: seawall repair · cost guide

Areas served

Lake Worth Beach · Lantana · Hypoluxo · Manalapan · Boynton Beach · Palm Beach · West Palm Beach · Delray Beach · North Palm Beach · Jupiter