Miami Marine Contractor · Free Inspection
If you need seawall repair in Miami, you almost always have options short of full replacement. We diagnose the actual failure mode, then repair it with engineered methods at 50 to 75 percent less cost than tearing the wall out.
Seawall repair in Miami covers a range of targeted interventions that restore structural integrity without removing the wall. Every contract is scoped to the actual failure modes found during inspection. We will not bundle services you do not need. The following are the methods we use most often, in roughly the order they appear in a typical project.
Every repair starts with a hands-on inspection of the cap, panels, joints, tiebacks, and bottom scour. We measure rotation with a digital level, probe for voids, photograph corrosion, and record findings in a written report delivered within 48 hours. You receive the same report whether you hire us for the work or not.
Active cracks in the cap and at panel joints are sealed with epoxy or polyurethane resin depending on width, movement, and water condition. For Miami's salt environment, we favor flexible polyurethane resins that tolerate thermal cycling without re-fracturing.
Voids behind the wall, the most common cause of sinkholes and yard drop, are filled with hydro-insensitive expanding polyurethane through dime-sized ports drilled through the cap. The foam reaches full strength in about 15 minutes per our polyurethane foam injection process.
When existing tiebacks have corroded or pulled, we install new helical pile anchors through the cap and torque them to engineered capacity. This is how we re-anchor leaning walls without excavation.
Spalled and delaminated cap concrete is removed back to sound material, rebar is treated or replaced, and the section is re-poured with corrosion-inhibited mix. See our cap repair page for full method detail.
By the time you can see most seawall problems, they have already been developing for one or more tide cycles. The earlier you call, the more options you have, and the less likely you are to be looking at full replacement.
We pick the method by failure mode, not by preference. Here is how the most common methods compare for a typical 100 linear foot Miami residential seawall:
| Method | Best for | Cost / LF | Timeline | Warranty |
|---|---|---|---|---|
| Polyurethane foam injection | Voids and soil loss | $35 to $95 | 1 day | 10 years |
| Helical pile anchoring | Tieback failure / lean | $180 to $350 effective | 2 to 5 days | 25 years |
| Cap repair / restoration | Spalling, cracks, rebar corrosion | $60 to $180 | 3 to 7 days | 5 years |
| Full replacement | Panel failure, rotation > 4" | $850 to $2,200 | 3 to 8 weeks | 10 years |
Most Miami seawalls we inspect benefit from a combination, typically polyurethane plus a few helical anchors plus localized cap work, all done in the same one-week mobilization.
Why Miami Chooses Us
Roughly 8 out of 10 Miami seawalls we inspect are repairable rather than replacement candidates. Our standard process always quotes repair first when the structure supports it, because a 30,000 dollar repair beats a 180,000 dollar replacement for the same outcome.
~80% of inspected walls = repair candidatesMost of our repair work happens from a shallow-draft barge on the water side. Polyurethane injection in particular requires only dime-sized ports through the cap, which we patch flush. Across our last 200 residential projects, more than 85 percent required zero landscape restoration.
85%+ jobs need zero landscape workDERM, city, USACE and FDEP submissions are part of every contract. Including the Miami Beach July 2025 5.7 ft NAVD ordinance and its 730-day repair window. Skipping the rules can mean 250 to 500 dollar per day fines and complications when you sell.
All required permits handledA scoped, written estimate is always free after the inspection. The factors that drive Miami seawall repair pricing, in order of impact:
Seawall repair in Miami is not the same as seawall repair in Tampa or Pensacola. Miami sits on porous oolitic limestone, which means water moves through the substrate aggressively and fill loss accelerates once a void starts. King-tide days, up to 14 per year per NOAA, raise the water level above the cap on many older walls. Miami-Dade hurricane code (FBC HVHZ) governs design loads in the area, and Miami Beach's July 2025 ordinance now requires new walls at 5.7 ft NAVD 88 elevation, or 4 ft with engineered upgrade capacity. Every repair we scope considers these specific local conditions.
"Wall had visible movement and an obvious tieback failure. They installed four helical anchors with controlled pull-back and brought the cap within three quarters of an inch of plumb. 25-year warranty on the anchors. Could not tell anything had been done from the lawn side."Thomas G.Key Biscayne · Tieback and anchor repair
"Managed a 480-foot condo seawall project for our HOA. Their team handled board reporting, phased the work to keep all slips occupied, and delivered final inspection records in a clean project binder. Reference projects we visited matched what we got."Rebecca N.Coral Gables · Commercial marine construction
"Routine inspection ahead of hurricane season. Diver went underwater, found two voids forming behind the wall that we did not know about. They quoted polyurethane injection at a fair price and the work was done in a day."Eric N.Coconut Grove · Pre-season inspection
Most targeted seawall repairs in Miami run 35 to 180 dollars per linear foot depending on method. Polyurethane foam void fill averages 35 to 95 per linear foot. Cap crack and spall repair runs 60 to 180 per linear foot. Helical tiebacks add 1,800 to 3,500 per anchor. Full replacement, by comparison, averages 850 to 2,200 per linear foot, which is why repair is the right call whenever the structure is sound enough to support it.
Polyurethane injection is typically a one-day project. Cap restoration runs 3 to 7 days. Helical tieback installation runs 2 to 5 days. Most combined repair packages are complete within a week and a half, including cure time.
Most structural seawall repairs in Miami-Dade require permitting through DERM and the relevant city building department. Polyurethane void fill that does not alter the wall's geometry is often classified as a maintenance activity and may not require a building permit, but DERM notification is still standard practice. We handle the determination, application, and follow-through on every job.
Yes, in most cases. Helical pile anchoring can re-anchor a leaning wall back toward vertical when rotation is under about 4 inches at the cap. Beyond that, replacement usually makes more sense. The free inspection includes a plumb measurement so you have the data to make that call.
Polyurethane foam injection void fills carry a 10-year transferable warranty against settlement or void return. Helical pile anchors carry a 25-year structural warranty. Cap restoration carries a 5-year workmanship warranty. All terms are written into the contract before you sign.
Free inspection. Written estimate within 48 hours. No high-pressure sales.
Schedule Free Inspectionor call (555) 000-0000