Seawall Replacement
South Florida
When restoration is no longer enough, JKT Marine replaces seawalls throughout Palm Beach, Broward, and Martin County. Concrete, vinyl, and composite systems — built to last in South Florida's saltwater environment.
Seawall replacement is the biggest decision a South Florida waterfront homeowner can make. It's expensive, it's disruptive, and it's permanent — which is exactly why JKT Marine never recommends replacement before we're certain restoration can't do the job. But when a seawall has reached the end of its service life — when the panels are failing, the tie rods are gone, and the soil behind the wall has eroded beyond recovery — replacement is the right call. We build new seawalls throughout Palm Beach, Broward, and Martin County using concrete, vinyl, and composite systems designed to perform in South Florida's demanding saltwater environment for decades to come.
Restoration First. Replacement Only When Necessary.
Before we talk about replacement, we always look for restoration options. A properly restored seawall can last another 15 to 25 years — at a fraction of the cost of full replacement. JKT Marine will always tell you honestly whether your wall can be saved.
When replacement becomes necessary: Full seawall replacement is the right call when the wall has multiple failed panels, completely corroded tie rod systems, extensive soil loss behind the wall, or when the structure has deteriorated past the point where restoration can provide reliable long-term performance. We'll show you exactly what we're seeing and explain why restoration isn't viable before we recommend replacement.
The signs that a South Florida seawall has crossed the line from restoration territory into replacement territory include:
- Multiple panels cracked through or displaced from their original position
- Tie rod system completely corroded with no viable anchor points remaining
- Extensive void formation behind the wall with significant soil loss
- Wall leaning or bowing more than a few inches out of vertical alignment
- Concrete panels that have deteriorated to the point where epoxy repair won't hold
- Wall age exceeding 40 to 50 years with no prior restoration history
- Storm surge damage that has compromised the wall's structural integrity throughout
Seawall Replacement Material Options
JKT Marine installs three primary seawall systems for South Florida replacement projects. Each has advantages depending on your waterway, your budget, and your long-term goals.
Concrete Seawall
Most Common in South FloridaConcrete remains the most widely used seawall material in Palm Beach and Broward County for good reason — it's proven, durable, and holds up well in South Florida's saltwater environment when properly constructed.
- 30 to 50 year lifespan with proper maintenance
- Strongest resistance to boat wake and storm surge
- Accepted by all South Florida regulatory agencies
- Best for high-wake Intracoastal locations
- Most cost-effective for longer wall runs
Vinyl Sheet Pile
Low Maintenance OptionVinyl sheet pile seawalls are corrosion-proof by nature — salt water simply cannot corrode vinyl the way it attacks concrete rebar and steel tie rods. An excellent choice for canals and lower-wake environments.
- 25 to 40 year lifespan
- Zero corrosion from saltwater exposure
- Faster installation than concrete systems
- Lower long-term maintenance requirements
- Ideal for residential canal installations
Composite Seawall
Premium Long-Term SolutionComposite seawall systems combine the structural strength of engineered materials with complete resistance to saltwater corrosion and marine organism attack — the premium option for South Florida waterfront properties.
- 40+ year lifespan in saltwater environments
- Immune to corrosion and marine borer attack
- Strongest long-term value proposition
- Environmentally preferred by regulatory agencies
- Best for high-value waterfront properties
Seawall Replacement Cost — South Florida 2026
Seawall replacement cost in South Florida is calculated primarily by linear footage. These are real-world ranges based on completed JKT Marine projects in Palm Beach and Broward County.
| Wall Type | Cost Per Linear Foot | 50 LF Example | 100 LF Example |
|---|---|---|---|
| Concrete Seawall | $800 – $1,400 | $40,000 – $70,000 | $80,000 – $140,000 |
| Vinyl Sheet Pile | $600 – $1,000 | $30,000 – $50,000 | $60,000 – $100,000 |
| Composite System | $1,000 – $1,600 | $50,000 – $80,000 | $100,000 – $160,000 |
Important: These ranges are real-world estimates — not contractor minimums designed to get you on the phone. Final cost depends on water depth, bottom conditions, access, permitting complexity, and site-specific factors. Call JKT Marine for a free on-site assessment and accurate replacement quote for your specific property.
Our Seawall Replacement Process
A seawall replacement is a major construction project. Here is exactly how JKT Marine manages yours from start to finish.
Free On-Site Assessment
Our owner personally inspects your existing wall, assesses whether restoration is viable, and gives you an honest recommendation — with a written report at no charge.
Material & Design Selection
We walk you through concrete, vinyl, and composite options — explaining the pros, cons, and cost differences for your specific site and waterway environment.
Full Permit Management
We handle all permits — county building departments, SFWMD, FDEP, and Army Corps of Engineers when required. Replacement projects typically require 6 to 12 weeks for permit approval.
Demolition & Site Prep
We remove the existing failed seawall system completely and prepare the site for new construction — including any required soil stabilization behind the wall line.
New Seawall Construction
Our crew installs your new seawall system with ownership on site throughout construction. Every project is built to current South Florida regulatory standards.
Final Inspection & Closeout
We manage the county final inspection, complete all site restoration, and provide you with full permit closeout documentation. Your new wall is fully on record.
Seawall Replacement Service Areas
JKT Marine replaces seawalls throughout Palm Beach, Broward, and Martin County. We come to your property for a free assessment anywhere in our service area.
Is Your Seawall Past the Point of Restoration?
Our owner comes out personally, assesses your wall honestly, and tells you whether restoration or replacement is the right call — at no charge and no obligation. Serving Palm Beach, Broward, and Martin County.