Best Materials for Seawalls

Coastal developments, such as beach side homes, are lucrative property investments for consumers. However, volatile ocean waves can easily damage property during storm surges. Many shorelines have seawall structures protecting the beach homes and surrounding landscape. In fact, many materials are available for building seawalls, exhibiting disadvantages and advantages for each type.

 Best Materials for Seawalls

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Aluminum

Aluminum seawalls resist corrosion well. However, waters with extremely low pH, or acidity, may contribute to the corrosion process. Aluminum’s lightweight quality may not be sturdy enough for a tall wall design or installation into a hard surface.

 Best Materials for Seawalls

Steel

Steel is the most common material used in seawall construction, but with high initial installation costs. However, steel is considered the strongest of all the seawall material choices. Steel is easily installed into almost any substrate, as well as having no height limitations for a seawall design. However, steel requires a protective coating applied periodically for proper maintenance. Appropriate steel care will allow the wall to last more than 25 years.

Vinyl or Plastic

Relatively new to the seawall material industry, vinyl or plastic has a longer lifespan than steel, possibly lasting more than 50 years. Unlike the other seawall materials, vinyl/plastic colors can be chosen for an aesthetically pleasing appearance. But, like aluminum, vinyl/plastic has height limitations and cannot be driven into hard surfaces.

 Best Materials for Seawalls

 

Concrete

Concrete seawalls are extremely strong, lasting more than 30 years. However, the concrete seawall structure must be specifically designed for a concrete installation, taking curing times and wall angles into consideration for the best protection against the ocean’s wave forces. Contractors should note the correct aggregate mixture for exposure to marine elements before pouring the concrete. Additionally, concrete may need maintenance, filling in cracks and holes from natural decay from ocean exposure.

 Best Materials for Seawalls

 Best Materials for Seawalls

 

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