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Seawall Construction

Protect Your Waterfront Property

Seawalls are one of the single most expensive aspects of a waterfront property. The seawall must withstand some of the most brutal conditions of any structure built today. Cracking, bowing, or erosion of the ground behind the wall can be signs of trouble. Heavy loads due to high levels of groundwater, violent storms, and marine borers are just a few of the hazards to consider when evaluating a seawall.

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1. Understand your property

First, we’ll send one of our experts to help you
determine a plan for your project.


2. Select the materials

We’ll work with you to find the right material. One that fits your needs and your budget.


3. Obtain the permits

Our dedicated team of experts will help you obtain the permits you need to start building.


4. Begin building

Sit back and watch us do what we do best: providing high quality marine products and services.

Concrete Seawall - South Florida
Concrete Seawall Along Florida Coast
Concrete Seawall in Sarasota

The Area’s Leader in Installing the Most Durable Concrete Pre-cast Seawalls

Duncan Seawall is the area’s leader in installing the most durable concrete pre-cast seawalls. Our concrete sheet panels are manufactured off-site by a professional concrete fabricator with on-staff engineers to ensure that each panel is constructed using the highest level of quality concrete consistency. The panels are 8” thick, include 5,000 P.S.I. concrete and continuous steel rebar throughout, and are properly cured for approximately six weeks. These specifications provide the strength and stability needed in a superior concrete panel seawall. 

After installing the concrete panels, Duncan Seawall supports the seawall with a steel reinforced, 5,000 P.S.I 20"x22" concrete cap and tieback system. Each tieback rod consists of a ¾” diameter hot dipped galvanized threaded rod with a 6” x 6” plate bolted to each end, securing the cap to an independent concrete base buried in the yard. Steel rods are not heated or bent in the field due to the reduction of structural integrity induced in the tieback rod. 

This finished concrete cap is long lasting, aesthetically pleasing, and an added value to your waterfront property.

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Commonly Used Seawall Materials

Several of the most commonly used seawall materials that can protect your most valuable investment are available through Duncan Seawall and are described below:


Concrete is a material that's known for withstanding the elements and coming out on top. Concrete seawalls have set the standard in terms of long term durability and long lasting and effective shoreline protection. 

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Vinyl panels can be installed using little or no heavy equipment. Vinyl is an excellent choice when there are tight conditions or limited access to the seawall. 

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Long lasting, interlocking system that creates an extremely strong continuous wall. Steel is primarily used when the exposed wall height is very large. 

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Wood Retaining

Wood walls are commonly used on freshwater properties that do not require the strength or corrosive resistance. Wood is also commonly used for retaining walls that are not constructed in water. 

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Composite creates fiber reinforced polymer profiles of extraordinary strength. Composite is an alternative solution to concrete, steel, aluminum, or vinyl and are
available in a variety of colors. 

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