A rock revetment on Hilton Head should be inspected once a year and after every tropical storm, so displaced stone and exposed fabric get fixed before the bank behind them erodes.
866-398-9323Licensed seawall specialists — FL · GA · SC
Seawall Repairs by Solid Foundations provides revetment maintenance in Hilton Head Island, SC for homeowners, property owners' associations, condo regimes, and marinas. Typical projects include resetting armor stone knocked loose by storms, rebuilding toes along creek and sound-side slopes, and repairing torn filter fabric. Call 866-398-9323 or use the quote form to book a free on-site inspection.
A revetment is a sloped bank of armor rock over smaller stone and filter fabric, built to absorb wave energy instead of throwing it back. It's tough, but storms, wakes, and tidal currents shift stones over time.
Oceanfront structures carry a special rule. Under South Carolina beachfront rules, a grandfathered erosion control structure may be maintained in its present condition but not enlarged, strengthened, or rebuilt, and if it's destroyed, it must be removed at the owner's expense. So on the beach side, timely maintenance protects your right to keep the structure at all. On creeks and sounds, SCDES notes that normal maintenance and repair may not need a critical area permit.
| When | What to look for |
|---|---|
| Spring | Full walk-down before storm season; reset stone; fabric fixes |
| After any tropical storm | Displaced armor, toe scour, end washouts |
| After the year's highest tides | Washouts along the top of the slope |
| Annually at a very low tide | Toe condition and transitions |
A low tide matters. With creek tides on the island reaching 7 feet or more, the toe is only visible for a short window.
Hilton Head faces several energetic waters at once: the Atlantic, Port Royal Sound, and big tidal creeks. The nearby Fort Pulaski gauge, which NOAA uses as the reference for the island's tide predictions, hit 12.56 feet during Matthew, its highest on record (NWS Charleston). Water at that height tops most rock slopes and works on the upper edge, where stones are usually smallest.
The Town's approach to its own shoreline shows how seriously erosion is taken here. It has renourished its beaches in 1990, 1997, 2006, 2016, and again in 2025–26, and plans to repeat that every 8 to 10 years. Private revetments on the sound and creeks don't get that kind of periodic rebuild, so steady maintenance is what keeps them working. A few reset stones each year cost far less than rebuilding a slope that was left to unravel.
Routine revetment maintenance in Hilton Head typically runs $1,500–$5,000 per year for a standard 100-foot residential revetment. Major rehabilitation runs $150–$400 per linear foot. Ongoing care costs much less than a rebuild.
Adding rock at the base of a wall? See riprap installation on Hilton Head. For whole-property programs, see shoreline maintenance on Hilton Head. Our Hilton Head seawall repair page covers wall problems behind the rock, and our hurricane prep guide covers pre-storm steps. We also maintain revetments in Savannah and Beaufort.
Not under South Carolina's beachfront rules. Grandfathered structures may be maintained in their present condition but not enlarged, strengthened, or rebuilt.
State rules say it must be removed at the owner's expense. That's one reason to keep it maintained.
Once a year, ideally in spring, and after any tropical storm.
Water wraps around the end of the rock and digs behind it. A proper tie-in at the transition solves it.
Licensed, insured, NCFI-certified. Serving Florida, Georgia & South Carolina since 1996.
866-398-9323