A seawall is a barrier that is constructed to prevent water from eroding the front of property that sits on a body of water, such as a lake. Typically, a seawall is installed during fall or winter as some lakes that are water-controlled have their water level lowered. Seawalls are can be constructed of materials such as stone or concrete. However, you can also build a seawall using water-resistant wood boards.
Things You'll Need
- Post hole digger
- Metal posts with threaded studs
- 2-by-12 cedar boards
- Power drill
- Socket wrench
Determine where you want to build the seawall along the edge of the water. Place stakes in the ground where the seawall will be located. Tie a string onto each stake to indicate the position of the seawall.
Dig a hole for the metal posts with the post hole digger to a depth of 24 to 36 inches. Repeat this step to dig a hole every 5 to 6 feet along the length of the wall.
Insert a metal post with threaded studs into each hole. Mix concrete in wheelbarrow by following the instructions on the package. Fill the hole with the concrete using a shovel. Allow 24 to 48 hours for the concrete to dry.
Place a level on top of each post to ensure that each post is sitting level to the ground.
Measure each 2-by-12 board and make a mark where the mounting holes need to be located using the pencil. Drill mounting holes into the wood with the power drill.
Place the 2-by-12 boards over the threaded studs on the metal posts. Place a washer over the threaded stud and then hand tighten a nut. Tighten the nut on the stud with the socket wrench. Repeat this step to install the remaining wood boards for the seawall.
Place a layer of rocks or gravel at the bottom front of the wall to prevent erosion. Add gravel or rock as a back fill behind the seawall and then add topsoil.
Tips & Warnings
- If the edge of the lake is tough dirt or gravel, you can dig a hole using a jackhammer.
Seawalls are a type of coastal defense built on the shoreline to reduce the damage from waves and storms. They are also...
How to Build a Bulkhead
A bulkhead is used in a concrete footer where there are steps up or down. These bulkheads allow a change in concrete...
How to Install a Steel Sea Wall
You cannot install a steel sea wall by yourself. It requires at least a three-member team, and one of you must have...
How to Build a Lake Bulkhead
Bulkheads are retaining walls designed to protect a shore line from erosion. Bulkheads are commonly used at lakes when houses are located...
How to Build a Seawall
A seawall can prevent loss of your waterfront property to erosion. Building a seawall takes a lot of physical labor, but it's...
How to Build a Pressure Treated Retaining Wall
Pressure treated wood comes in many dimensions and because it is chemically infused with Chromium Copper Arsenate (CCA) or Alkaline Copper (ACQ)...
How to Build Wooden Cars
Building wooden cars with a few common hand tools can be as easy or difficult as the builder desires to make it....
How to Build a Wooden Dock Ladder
If you build your own dock, you know you have to allow some height for the water level to rise and fall...
How to Repair a Concrete Seawall
A seawall is an invaluable structure for those homeowners who live close to the ocean and rely on the concrete wall to...
How to Repair a Wooden Seawall
A seawall is a barrier that prevents beach erosion by acting as a line of defense by holding back water. Because it...
Lake Front Retaining Wall Ideas
You might choose to build a retaining wall on your lakefront property for a variety of reasons. Perhaps you wish to create...
Types of Bulkheads & Seawalls
Bulkheads and seawalls are man-made structures designed to protect bluffs and land banks by separating water and land. Bulkheads serve as retaining...
Types of Seawall Construction
Beach and lake shore erosion is a serious problem. Sea walls of various types can prevent the damage done by seasonal variations...