
Seawall Repair in Key West, Stock Island, Sugarloaf Key, Big Pine Key, and Marathon
The region’s protected waters and natural areas include the Florida Keys National Marine Sanctuary, Dry Tortugas National Park 70 miles to the west, the National Key Deer Refuge on Big Pine Key, and Bahia Honda State Park. Each year the island also draws visitors for Fantasy Fest, the Key West Lobsterfest, and the Conch Republic Independence Celebration.
Key West is small in land area but completely surrounded by water, and the same is true of nearly every island up the Lower Keys. Homes, marinas, hotels, and commercial buildings sit feet from the water, and seawalls are the last line of defense between those structures and the daily action of tide, storm, and current. The combination of full saltwater exposure and direct hurricane risk makes seawall maintenance non-negotiable, and Ultramarine Solutions serves property owners throughout the Lower Keys with experienced, durable seawall work.
Seawalls in the Keys face an environment unlike anywhere else in Florida. Continuous saltwater contact, exposure to storms approaching from any direction, and proximity to coral and limestone substrates create conditions that test even the best installations. Many existing seawalls predate modern materials and engineering practices, and Hurricane Irma in 2017 underscored just how aggressive that environment can be.
Symptoms of a struggling seawall in Key West include visible cracking, panel displacement, rust streaking, and erosion on the landward side. Homeowners often see washouts after high tides or storm events, with soil and material visibly leaving the yard. Patching the surface doesn’t address the underlying soil loss. Ultramarine Solutions delivers repair work that targets the actual failure mode and restores long-term performance, even in the harshest island conditions.
From Key West and Stock Island through Sugarloaf Key, Big Pine Key, Marathon, and the surrounding islands, property owners trust Ultramarine Solutions to handle seawall inspection, repair, and new construction with the care these properties demand. Our team works within the unique constraints of Keys construction and delivers results that hold up.

Why Choose Ultramarine in Key West, FL Seawall Repair or Seawall Build
Few environments demand more from a seawall than the Florida Keys. Ultramarine combines the experience, materials, and process required to deliver work that performs on islands where the ocean is always close.





